Tootfinder

everyone: wow, see-in-the-dark contact lenses!
me: they made tiny contact lenses for mice!
https://phys.org/news/2025-05-infrared-contact-lenses-people-dark.html

Infrared contact lenses allow people to see in the dark, even with their eyes closed
Neuroscientists and materials scientists have created contact lenses that enable infrared vision in both humans and mice by converting infrared light into visible light. Unlike infrared night vision goggles, the contact lenses, described in the journal Cell, do not require a power source—and they enable the wearer to perceive multiple infrared wavelengths. Because they're transparent, users can see both infrared and visible light simultaneously, though infrared vision was enhanced when partic…

Sparse Infrared Spectroscopy for Detection of Volatile Organic Compounds
Mira Welner, Andre Hazbun, Thomas Beechem
https://arxiv.org/abs/2506.20678 https:/…

Sparse Infrared Spectroscopy for Detection of Volatile Organic Compounds
To reduce the complexity of infrared spectroscopy hardware while maintaining performance, a data informed, task-specific, spectral collection approach termed Sparse Infrared Spectroscopy (SIRS) is developed. Using a numerically based virtual experiment based on a quantitatively accurate infrared database, non-negative matrix factorization is used to identify the spectral pass bands of a minimal number of filters necessary to identify volatile organic compounds (VOC) within either an inert backg…

The Jet Origin of the Mid-infrared Excess in the Black Hole V404 Cygni in Quiescence
E. S. Borowski, R. I. Hynes, Q. Hunt, A. J. Tetarenko, R. M. Plotkin, T. Shahbaz, P. Gandhi, T. J. Maccarone, J. C. A. Miller-Jones, C. O. Heinke, A. W. Shaw, T. D. Russell, G. R. Sivakoff, P. A. Charles, E. V. Palaiologou, P. Reig
https://arxiv…

The Jet Origin of the Mid-infrared Excess in the Black Hole V404 Cygni in Quiescence
Observations of some quiescent black hole X-ray binaries have revealed an excess of mid-infrared (MIR) emission above that expected from their donor stars. In one system, V404 Cygni, this excess has been variously suggested to arise from the accretion disk, circumbinary material, or a compact relativistic jet. Here we present simultaneous James Webb Space Telescope (JWST), Atacama Large Millimeter/submillimeter Array (ALMA), and complementary multi-wavelength observations undertaken to resolve …

The HST-Gaia Near-Infrared Astrometric Reference Frame near the Milky Way Galactic Center
Matthew W. Hosek Jr., Tuan Do, Gregory D. Martinez, Rebecca Lewis-Merrill, Andrea M. Ghez, Jessica R. Lu, Shoko Sakai, Jay Anderson
https://arxiv.org/abs/2506.19933

The HST-Gaia Near-Infrared Astrometric Reference Frame near the Milky Way Galactic Center
We present the first high-precision proper motion catalog, tied to the International Celestial Reference System (ICRS), of infrared astrometric reference stars within R $\leq$ 25" (1 pc) of the central supermassive black hole at the Galactic center (GC). This catalog contains $\sim$2,900 sources in a highly extinguished region that is inaccessible via Gaia. New astrometric measurements are extracted from HST observations (14 epochs, 2010 - 2023) and transformed into the ICRS using 40 stars in c…

Damn! I wanted X-ray vision! 😉
Seeing infrared: scientists create contact lenses that grant ‘super-vision’;
Breakthrough could lead to range of wearables that extend range of vision and help people with colour blindness
https://www.theguardian.com/science/2025/m

MTSIC: Multi-stage Transformer-based GAN for Spectral Infrared Image Colorization
Tingting Liu, Yuan Liu, Jinhui Tang, Liyin Yuan, Chengyu Liu, Chunlai Li, Xiubao Sui, Qian Chen
https://arxiv.org/abs/2506.17540

MTSIC: Multi-stage Transformer-based GAN for Spectral Infrared Image Colorization
Thermal infrared (TIR) images, acquired through thermal radiation imaging, are unaffected by variations in lighting conditions and atmospheric haze. However, TIR images inherently lack color and texture information, limiting downstream tasks and potentially causing visual fatigue. Existing colorization methods primarily rely on single-band images with limited spectral information and insufficient feature extraction capabilities, which often result in image distortion and semantic ambiguity. In …

The undetectable fraction of core-collapse supernovae in luminous infrared galaxies
I. M\"antynen, E. Kankare, S. Mattila, A. Efstathiou, S. D. Ryder, T. M. Reynolds, C. Vassallo, P. V\"ais\"anen
https://arxiv.org/abs/2506.18518

The undetectable fraction of core-collapse supernovae in luminous infrared galaxies
A large fraction of core-collapse supernovae (CCSNe) in luminous infrared galaxies (LIRGs) remain undetected due to extremely high line-of-sight host galaxy dust extinction, and strong contrast between the SN and the galaxy background in the central regions of LIRGs, where the star formation is concentrated. This fraction of undetected CCSNe, unaccounted for by typical extinction corrections, is an important factor in determining CCSN rates, in particular at redshifts $z \gtrsim 1$, where LIRGs…

Prospects for radio weak lensing: studies using LOFAR observations in the ELAIS-N1 field
Jinyi Liu, Reinout van Weeren, Huub Rottgering, Konrad Kuijken
https://arxiv.org/abs/2506.20845

Prospects for radio weak lensing: studies using LOFAR observations in the ELAIS-N1 field
We carry out a shape and weak lensing analysis of Low Frequency Array (LOFAR) radio sources and Hyper Suprime-Cam (HSC) optical sources within the European Large Area Infrared Space Observatory Survey-North 1 (ELAIS-N1) field. Using HSC data alone, we detect a cosmic shear correlation signal at a significance of $\sim$$9σ$ over a $\sim$$6.4$ deg$^2$ region. For the radio dataset, we analyse observations from both the LOFAR Two Metre Sky Survey (LoTSS) and the International LOFAR Telescope (ILT…

An Accretion Flare Interpretation for the UHE Neutrino Event KM3-230213A
Chengchao Yuan, Leonard Pfeiffer, Walter Winter, Sara Buson, Federico Testagrossa, Jose Maria Sanchez Zaballa, Alessandra Azzollini
https://arxiv.org/abs/2506.21111

An Accretion Flare Interpretation for the UHE Neutrino Event KM3-230213A
We study the origin of the ultra-high-energy (UHE) astrophysical neutrino event KM3-230213A detected by KM3NeT, focusing on MRC 0614-083 which has been pinpointed as the closest blazar to the neutrino localization. A joint interpretation of the optical, infrared, and X-ray light curves suggests that MRC 0614-083 has undergone a super-Eddington accretion flare accompanied by efficient proton acceleration. That flare has initiated a delayed infrared echo within the surrounding dust torus, which s…

Hybrid Morphology Radio Sources from the MeerKAT Absorption Line Survey (MALS): Radio, Mid-infrared and Environmental Characteristics
Souvik Manik, Shobha Kumari, Netai Bhukta, Sabyasachi Pal, Sushanta K. Mondal
https://arxiv.org/abs/2506.20211

Hybrid Morphology Radio Sources from the MeerKAT Absorption Line Survey (MALS): Radio, Mid-infrared and Environmental Characteristics
Hybrid morphology radio sources (HyMoRSs) are a rare subclass of radio galaxies that display a Fanaroff-Riley type I (FR I) morphology on one side of the central supermassive black hole (SMBH) and a type II (FR II) morphology on the other. These unique sources provide valuable insights into the physical mechanisms behind the FR dichotomy. In this study, we report the discovery of thirty-six new HyMoRSs, marking the largest collection of such sources in the southern sky to date, using data obtai…

Consequences of Non-Gaussian Instrumental Noise in Perturbed Nulling Interferometers
Felix A. Dannert, Philipp A. Huber, Thomas Birbacher, Romain Laugier, Markus J. Bonse, Emily O. Garvin, Adrian M. Glauser, Veronika Oehl, Sascha P. Quanz
https://arxiv.org/abs/2506.20653

Consequences of Non-Gaussian Instrumental Noise in Perturbed Nulling Interferometers
With the astrophysics community working towards the first observations and characterizations of Earth-like exoplanets, interest in space-based nulling interferometry has been renewed. This technique promises unique scientific and technical advantages by enabling direct mid-infrared observations. However, concept studies of nulling interferometers often overlook the impact of systematic noise caused by instrument perturbations. Earlier research introduced analytical and numerical models to addre…

Replaced article(s) found for physics.ao-ph. https://arxiv.org/list/physics.ao-ph/new
[1/1]:
- Earth's Infrared Background
Ofer Shamir, Edwin P. Gerber

Two-Loop Turbulent Helical Magnetohydrodynamics: Large-Scale Dynamo and Energy Spectrum
Michal Hnati\v{c}, Tom\'a\v{s} Lu\v{c}ivjansk\'y, Luk\'a\v{s} Mi\v{z}i\v{s}in, Yurii Molotkov, Andrei Ovsiannikov
https://arxiv.org/abs/2506.20578

Two-Loop Turbulent Helical Magnetohydrodynamics: Large-Scale Dynamo and Energy Spectrum
We present a two-loop field-theoretic analysis of incompressible helical magnetohydrodynamics (MHD) in fully developed stationary turbulence. A key feature of helical MHD is the appearance of an infrared-unstable ``mass-like'' term in the loop diagrams of the magnetic response function. Physically, this term corresponds to the relevant perturbation of the Joule damping, proportional to $\boldsymbol{\nabla} \times \boldsymbol{b}$ ($\boldsymbol{b} =$ magnetic field). Its presence destabilizes the…

Replaced article(s) found for physics.geo-ph. https://arxiv.org/list/physics.geo-ph/new
[1/1]:
- Earth's Infrared Background
Ofer Shamir, Edwin P. Gerber

A Far-Infrared Search for Planet Nine Using AKARI All-Sky Survey: #PlanetNine candidates whose positions and flux are within the theoretical prediction ranges. These candidates warrant further investigation through follow-up observations to confirm the existence and properties of Planet Nine."

James Webb Space Telescope observations of the white dwarf cooling sequence of 47 Tucanae
M. Salaris (Liverpool John Moores University, INAF-OAAb), M. Scalco (INAF-OAPD), L. R. Bedin (INAF-OAPD), S. Cassisi (INAF-OAAb, INFN-Pisa)
https://arxiv.org/abs/2506.20732

James Webb Space Telescope observations of the white dwarf cooling sequence of 47 Tucanae
We present a study of the white dwarf (WD) cooling sequence of the globular cluster 47 Tucanae (47 Tuc or NGC 104) using deep infrared observations with the James Webb Space Telescope (JWST). By combining these data with ultra-deep optical imaging from the Hubble Space Telescope (HST) taken ~12 years earlier, we derived precise proper motions (PMs) and isolated a clean sample of WD cluster members. We estimated the cluster's age by comparing the observed WD cooling sequence luminosity function …

Thermal and Optical Characterization of Near-Earth Objects: Science Commissioning of the Recently Upgraded Mid-Infrared Camera MIRSI on the NASA Infrared Telescope Facility
Andy J. L\'opez-Oquendo, Joseph L. Hora, David E. Trilling, Howard A. Smith
https://arxiv.org/abs/2506.13943

Thermal and Optical Characterization of Near-Earth Objects: Science Commissioning of the Recently Upgraded Mid-Infrared Camera MIRSI on the NASA Infrared Telescope Facility
Mid-infrared (mid-IR) observations of Near-Earth Objects (NEOs) have historically been a valuable tool for understanding their physical properties. However, the current state of mid-IR instruments on ground-based telescopes places several limitations on performing thermal characterization of NEOs. The complexity of maintaining these instruments in operational conditions on telescopes has led to their decommissioning. Here, we present the first science commissioning observations out to 12.5 micr…

A Wireless Self-Calibrating Ultrasound Microphone Array with Sub-Microsecond Synchronization
Dennis Laurijssen, Rens Baeyens, Walter Daems, Jan Steckel
https://arxiv.org/abs/2506.19612

A Wireless Self-Calibrating Ultrasound Microphone Array with Sub-Microsecond Synchronization
We present a novel system architecture for a distributed wireless, self-calibrating ultrasound microphone network for synchronized in-air acoustic sensing. Once deployed the embedded nodes determine their position in the environment using the infrared optical tracking system found in the HTC Vive Lighthouses. After self-calibration, the nodes start sampling the ultrasound microphone while embedding a synchronization signal in the data which is established using a wireless Sub-1GHz RF link. Data…

The Thermal Cost of Harvesting the Solar Infrared Tail in Space-Based Photovoltaics
David E. Abraham, Linus Kim, Aaswath P. Raman
https://arxiv.org/abs/2506.16588

The Thermal Cost of Harvesting the Solar Infrared Tail in Space-Based Photovoltaics
Space applications require the highest performing photovoltaic devices. Typically these are multi-junction devices that are capable of converting a larger bandwidth of the solar spectrum. However, the conversion of longer wavelength photons in the solar infrared tail results in a disproportionate increase in generated heat per watt of electricity, and since devices have limited heat rejection in space, this excess heat raises the operating temperature, lowering the efficiency of the entire devi…

Valley resolved optical spectroscopy and coherent excitation of quantum Hall edge states in graphene
Ashutosh Singh, Maria Sebastian, Mikhail Tokman, Alexey Belyanin
https://arxiv.org/abs/2506.19654

Valley resolved optical spectroscopy and coherent excitation of quantum Hall edge states in graphene
We show that chiral edge states in graphene under Quantum Hall effect conditions can be selectively probed and excited by terahertz or infrared radiation with single-quasiparticle sensitivity without affecting bulk states. Moreover, valley-selective excitation of edge states is possible with high fidelity. The underlying physical mechanism is the inevitable violation of adiabaticity and inversion symmetry breaking for electron states near the edge. This leads to the formation of Landau level-sp…

Open-Path Methane Sensing via Backscattered Light in a Nonlinear Interferometer
Jinghan Dong, Weijie Nie, Arthur C. Cardoso, Haichen Zhou, Jingrui Zhang, John G. Rarity, Alex S. Clark
https://arxiv.org/abs/2506.17107

Open-Path Methane Sensing via Backscattered Light in a Nonlinear Interferometer
Nonlinear interferometry has widespread applications in sensing, spectroscopy, and imaging. However, most implementations require highly reflective mirrors and precise optical alignment, drastically reducing their versatility and usability in outdoor applications. This work is based on stimulated parametric down conversion (ST-PDC), demonstrating methane absorption spectroscopy in the mid-infrared (MIR) region by detecting near-infrared (NIR) photons using a silicon-based CMOS camera. The MIR l…

Vertical Profile Corrected Satellite NH3 Retrievals Enable Accurate Agricultural Emission Characterization in China
Qiming Liu, Yilin Chen, Peng Xu, Huizhong Shen, Zelin Mai, Ruixin Zhang, Peng Guo, Zhiyu Zheng, Tiancheng Luan, Shu Tao
https://arxiv.org/abs/2505.19942

Vertical Profile Corrected Satellite NH3 Retrievals Enable Accurate Agricultural Emission Characterization in China
Ammonia (NH3) emissions significantly contribute to atmospheric pollution, yet discrepancies exist between bottom-up inventories and satellite-constrained top-down estimates, with the latter typically one-third higher. This study quantifies how assumptions about NH3 vertical distribution in satellite retrievals contribute to this gap. By implementing spatially and temporally resolved vertical profiles from the Community Multiscale Air Quality model to replace steep gradients in Infrared Atmosph…

Infrared observations reveal the reprocessing envelope in the tidal disruption event AT 2019azh
Thomas M. Reynolds, Lars Thomsen, Seppo Mattila, Takashi Nagao, Joseph P. Anderson, Franz E. Bauer, Panos Charalampopoulos, Lixin Dai, Sara Faris, Mariusz Gromadzki, Claudia P. Guti\'errez, Hanin Kuncarayakti, Cosimo Inserra, Erkki Kankare, Timo Kravtsov, Shane Moran, Phil Wiseman

Infrared observations reveal the reprocessing envelope in the tidal disruption event AT 2019azh
Tidal disruption events (TDEs) are expected to release much of their energy in the far-ultraviolet (UV), which we do not observe directly. However, infrared (IR) observations can observe re-radiation of the optical/UV emission from dust, and if this dust is observed in the process of sublimation, we can infer the un-observed UV radiated energy. TDEs have also been predicted to show spectra shallower than a blackbody in the IR, but this has not yet been observed. We present near/mid-IR observati…

Multi-Technique Characterization of Rhodium Gem-Dicarbonyls on TiO$_2$(110)
Moritz Eder, Faith J. Lewis, Johanna I. H\"utner, Panukorn Sombut, Maosheng Hao, David Rath, Jan Balajka, Margareta Wagner, Matthias Meier, Cesare Franchini, Ulrike Diebold, Michael Schmid, Florian Libisch, Ji\v{r}\'i Pavelec, Gareth S. Parkinson
https://

Multi-Technique Characterization of Rhodium Gem-Dicarbonyls on TiO$_2$(110)
Gem-dicarbonyls of transition metals supported on metal (oxide) surfaces are common intermediates in heterogeneous catalysis. While infrared (IR) spectroscopy is a standard tool for detecting these species on applied catalysts, the ill-defined crystallographic environment of species observed on powder catalysts renders data interpretation challenging. In this work, we apply a multi-technique surface science approach to investigate rhodium gem-dicarbonyls on a single-crystalline rutile TiO$_2$(1…

A Joint JWST and HST View of Omega Centauri: Multiple Stellar Populations and Their Kinematics
T. Ziliotto, A. P. Milone, G. Cordoni, A. F. Marino, M. V. Legnardi, E. Dondoglio, E. Bortolan, F. Muratore
https://arxiv.org/abs/2506.21187

A Joint JWST and HST View of Omega Centauri: Multiple Stellar Populations and Their Kinematics
We combine F115W and F277W images collected with the Near Infrared Camera of the James Webb Space Telescope (JWST) with multi-band, multi-epoch Hubble Space Telescope (HST) observations of Omega Centauri to investigate its multiple stellar populations and internal kinematics. Our study focuses on a region spanning $\sim$0.9 to $\sim$2.3 half-light radii from the cluster center, largely unexplored by HST and JWST. Using chromosome maps, we identify the principal populations along the upper main …

Theory of infrared magneto-optical effects from chiral phonons in solids
Chiara Fiorazzo, Cheol-Hwan Park, Ivo Souza, Matteo Calandra
https://arxiv.org/abs/2506.11258

Theory of infrared magneto-optical effects from chiral phonons in solids
In crystals with broken time-reversal symmetry, zone-center phonons can acquire a finite angular momentum via velocity-dependent forces on the nuclei. Despite having the same order of magnitude as the electron spin angular momentum, the phonon angular momentum can be hard to detect because the frequency splitting is small. Here, by developing a theory of lattice magneto-optical effects in reflection and transmission, we show that infrared magnetic circular dichroism is a sensitive probe of zone…

Very cool
https://mastodon.cloud/@DamnInteresting/114718201511191797

Damn Interesting (@DamnInteresting@mastodon.cloud)
Attached: 1 image The Solar System's Greatest Mystery May Finally Be Solved! https://www.universetoday.com/articles/a-far-infrared-search-for-planet-nine-using-akari-all-sky-survey?utm_source=DamnInteresting

Multi-partonic interactions, iterated discontinuities and the virtuality expansion in deep inelastic scattering
Zeno Capatti, Lucien Huber, Michael Ruf
https://arxiv.org/abs/2506.16489

Multi-partonic interactions, iterated discontinuities and the virtuality expansion in deep inelastic scattering
We introduce a perturbative model that accounts for the contribution of multi-partonic interactions to collider observables. A key feature of this multi-parton model is that cross sections are organised in terms of building blocks that are separately infrared-finite in virtue of the KLN theorem. We find compact expressions for these building blocks in terms of double discontinuities of Feynman-type integrals obtained by endowing a vacuum graph with additional topological information. The framew…

On accretion in the polar V379 Vir
M. V. Suslikov, A. I. Kolbin, N. V. Borisov
https://arxiv.org/abs/2506.17674 https://arxiv.org/pdf…

On accretion in the polar V379 Vir
Based on optical and infrared survey data spanning $\approx 20$ years of observations, the long-term variability of the polar V379 Vir with a brown dwarf secondary has been studied. By modeling the spectral energy distribution, we constrain the white dwarf's mass to $M_1 = 0.61 \pm 0.05~M_{\odot}$ and its effective temperature to $T_{eff} = 10930 \pm 350~K$. Near-infrared photometry yields a donor radius of $R_2 = 0.095 \pm 0.018 R_{\odot}$ and temperature $T_{eff} = 1600 \pm 180 K$. Modeling o…

Infrared Divergence in QED and the Fluctuation of Electromagnetic Fields
Takeshi Fukuyama
https://arxiv.org/abs/2506.08269 https://ar…

Infrared Divergence in QED and the Fluctuation of Electromagnetic Fields
We reconsider the well known infrared divergence (IRD) in QED from the various graphs and relate with the electromagnetic fluctuation etc. based on the Fock space formalism. It may be useful for discriminating it from the alternative approach based on the dressed asymptotic space.

The HUSTLE Program: The UV to Near-IR Transmission Spectrum of the Hot Jupiter KELT-7b
Carlos Gasc\'on, Mercedes L\'opez-Morales, Ryan J. MacDonald, Joanna K. Barstow, Victoria A. Boehm, Hannah R. Wakeford, Munazza K. Alam, Lili Alderson, Natasha E. Batalha, Charlotte E. Fairman, David Grant, Nikole K. Lewis, Mark S. Marley, Sarah E. Moran, Kazumasa Ohno, Guillem Anglada-Escud\'e, Ignasi Ribas

The HUSTLE Program: The UV to Near-IR Transmission Spectrum of the Hot Jupiter KELT-7b
The ultraviolet and optical wavelength ranges have proven to be a key addition to infrared observations of exoplanet atmospheres, as they offer unique insights into the properties of clouds and hazes and are sensitive to signatures of disequilibrium chemistry. Here we present the 0.2-0.8 $μ$m transmission spectrum of the Teq = 2000 K Jupiter KELT-7b, acquired with HST WFC3/UVIS G280 as part of the HUSTLE Treasury program. We combined this new spectrum with the previously published HST WFC3/IR …

Probing multi-band variability and mode switching in the candidate transitional millisecond pulsar 3FGL J1544.6-1125
Giulia Illiano, Francesco Coti Zelati, Arianna Miraval Zanon, Alessandro Papitto, Maria Cristina Baglio, Domitilla de Martino, Stefano Giarratana, Filippo Ambrosino, Francesco Carotenuto, Sergio Campana, Alessio Marino, Nanda Rea, Diego F. Torres, Marcello Giroletti, Thomas D. Russell, Christian Malacaria, Caterina Ballocco, Enrico Bozzo, Carlo Ferrigno, Riccardo La Plac…

Probing multi-band variability and mode switching in the candidate transitional millisecond pulsar 3FGL J1544.6-1125
We present the most extensive high-time resolution multi-band campaign to date on the candidate transitional millisecond pulsar (tMSP) 3FGL J1544.6-1125 in the sub-luminous disk state, with coordinated observations from the radio to the X-ray band. While XMM-Newton and NuSTAR X-ray light curves exhibit the characteristic high- and low-mode bimodality, the source faintness prevents firm evidence for similar bimodality in the ultraviolet and near-infrared light curves, presented here for the firs…

Balmer Decrement and IRX Break in Tracing Dust Attenuation at Scales of Individual Star-forming Regions in NGC 628
Man Qiao, Mingfeng Liu, Zongfei Lyu, Shuang Liu, Chao Yang, Dong Dong Shi, Fangxia An, Zhizheng Pan, Wenhao Liu, Binyang Liu, Run Wen, Yu Heng Zhang, Xian Zhong Zheng
https://arxiv.org/abs/2506.21026

Balmer Decrement and IRX Break in Tracing Dust Attenuation at Scales of Individual Star-forming Regions in NGC 628
We investigate the relationships between infrared excess (IRX=$L_{\rm IR}/L_{\rm UV}$) and Balmer decrement (${\rm H}α/{\rm H}β$) as indicators of dust attenuation for 609 ${\rm {H\,{\small II}}}$ regions at scales of $\sim 50-200$ pc in NGC 628, utilizing data from AstroSat, James Webb Space Telescope (JWST) and Multi Unit Spectroscopic Explorer (MUSE). Our findings indicate that about three fifths of the sample ${\rm {H\,{\small II}}}$ regions reside within the regime occupied by local star…

China Focus: Retinal implant offers hope for blind, extends vision to infrared #BCI

The changing impact of radio jets as they evolve: The view from the cold gas
Tom Oosterloo, Raffaella Morganti, Clive Tadhunter, Aneta Siemiginowska, Ewan O'Sullivan, Giuseppina Fabbiano
https://arxiv.org/abs/2506.20448

The changing impact of radio jets as they evolve: The view from the cold gas
We present ALMA CO(1-0) and CO(3-2) observations of a powerful young radio galaxy, PKS 0023-26, hosted by a far-infrared bright galaxy. The galaxy has a luminous optical AGN and a very extended distribution of molecular gas. We used these observations (together with available CO(2-1) data) to trace the impact of the AGN across the extent of the radio emission and beyond on scales of a few kpc. Despite the strength of the optical AGN, the kinematics of the cold molecular gas is strongly affected…

Temperature calibration of surface emissivities with an improved thermal image enhancement network
Ning Chu, Siya Zheng, Shanqing Zhang, Li Li, Caifang Cai, Ali Mohammad-Djafari, Feng Zhao, Yuanbo Song
https://arxiv.org/abs/2506.16803

Temperature calibration of surface emissivities with an improved thermal image enhancement network
Infrared thermography faces persistent challenges in temperature accuracy due to material emissivity variations, where existing methods often neglect the joint optimization of radiometric calibration and image degradation. This study introduces a physically guided neural framework that unifies temperature correction and image enhancement through a symmetric skip-CNN architecture and an emissivity-aware attention module. The pre-processing stage segments the ROIs of the image and and initially c…

A comparative analysis of plasmonic and dielectric metasurface sensing platforms powered by bound states in the continuum
Tao Jiang, Angana Bhattacharya, Martin Barkey, Andreas Aigner, Thomas Weber, Juan Wang, Stefan A. Maier, Andreas Tittl
https://arxiv.org/abs/2506.18636

A comparative analysis of plasmonic and dielectric metasurface sensing platforms powered by bound states in the continuum
Nanophotonic platforms based on surface-enhanced infrared absorbance spectroscopy (SEIRAS) have emerged as an effective tool for molecular detection. Sensitive nanophotonic sensors with robust resonant modes and amplified electromagnetic near fields are essential for spectroscopy, especially in lossy environments. Metasurfaces driven by bound state in the continuum (BICs) have unlocked a powerful platform for molecular detection due to their exceptional spectral selectivity. While plasmonic BIC…

Rubidium Abundances in Cool Giants from High-Resolution H-band Spectra: A New Diagnostic for Galactic Chemical Evolution
Nils Ryde, Jess Kocher, Govind Nandakumar, Henrik Hartman, Marta Molero, Henrik J\"onsson, Gregory Mace, Erica Sawczynec, Kyle F. Kaplan
https://arxiv.org/abs/2506.21332

Rubidium Abundances in Cool Giants from High-Resolution H-band Spectra: A New Diagnostic for Galactic Chemical Evolution
The Galactic Center and inner disk of the Milky Way contain complex stellar populations obscured by heavy dust extinction. To study their chemical composition, high-resolution near-infrared (near-IR) spectroscopy is necessary. Expanding the set of elements measurable in the near-IR, especially neutron-capture elements, improves our ability to trace nucleosynthesis and Galactic chemical evolution. This work aims to identify and characterize a spectral line suitable for determining rubidium (Rb) …

A Far-Infrared Search for Planet Nine Using AKARI All-Sky Survey
Amos Y. -A. Chen, Tomotsugu Goto, Issei Yamamura, Takao Nakagawa, Cossas K. -W. Wu, Terry Long Phan, Tetsuya Hashimoto, Yuri Uno, Simon C. -C. Ho, Seong Jin Kim
https://arxiv.org/abs/2506.12854

A Far-Infrared Search for Planet Nine Using AKARI All-Sky Survey
An unusual orbital element clustering of Kuiper belt objects (KBOs) has been observed. The most promising dynamic solution is the presence of a giant planet in the outer Solar system, Planet Nine. However, due to its extreme distance, intensive searches in optical have not been successful. We aim to find Planet Nine in the far-infrared, where it has the peak of the black body radiation, using the most sensitive all-sky far-infrared survey to date, AKARI. In contrast to optical searches, where t…

Heatables: Effects of Infrared-LED-Induced Ear Heating on Thermal Perception, Comfort, and Cognitive Performance
Valeria Zitz, Michael K\"uttner, Jonas Hummel, Michael T. Knierim, Michael Beigl, Tobias R\"oddiger
https://arxiv.org/abs/2506.02714

Heatables: Effects of Infrared-LED-Induced Ear Heating on Thermal Perception, Comfort, and Cognitive Performance
Maintaining thermal comfort in shared indoor environments remains challenging, as centralized HVAC systems are slow to adapt and standardized to group norms. Cold exposure not only reduces subjective comfort but can impair cognitive performance, particularly under moderate to severe cold stress. Personal Comfort Systems (PCS) have shown promise by providing localized heating, yet many designs target distal body parts with low thermosensitivity and often lack portability. In this work, we invest…

High-Throughput Computation of Anharmonic Low-Frequency Protein Vibrations
Michael A. Sauer, Souvik Mondal, Madeline Cano, Matthias Heyden
https://arxiv.org/abs/2506.15109

High-Throughput Computation of Anharmonic Low-Frequency Protein Vibrations
At room temperature, low frequency vibrations at far-infrared frequencies are thermally excited ($k_B T > h ν$) and not restricted to harmonic fluctuations around a single potential energy minimum. For folded proteins, these intrinsically anharmonic vibrations can contain information on slow conformational transitions. Recently, we have developed FREquency-SElective ANharmonic (FRESEAN) mode analysis, a method based on time correlation functions that isolates low-frequency vibrational motions …

Temperature-Dependent Characterization of Large-Area Superconducting Microwire Array with Single-Photon Sensitivity in the Near-Infrared
Christina Wang, Cristi\'an Pe\~na, Si Xie, Emanuel Knehr, Boris Korzh, Jamie Luskin, Sahil Patel, Matthew Shaw, Valentina Vega
https://arxiv.org/abs/2506.04533

Temperature-Dependent Characterization of Large-Area Superconducting Microwire Array with Single-Photon Sensitivity in the Near-Infrared
Superconducting nanowire single photon detectors (SNSPDs) are a leading detector technology for time-resolved single-photon counting from the ultraviolet to the near-infrared regime. The recent advancement in single-photon sensitivity in micrometer-scale superconducting wires opens up promising opportunities to develop large area SNSPDs with applications in low background dark matter detection experiments. We present the first detailed temperature-dependent study of a 4-channel $1\times1$ mm$^{…

High resolution ALMA observations of H$_2$S in LIRGS (Dense gas and shocks in outflows and CNDs)
M. T. Sato, S. Aalto, S. K\"onig, K. Kohno, S. Viti, M. Gorski, F. Combes, S. Garc\'ia-Burillo, N. Harada, P. van der Werf, J. Otter, S. Muller, Y. Nishimura, J. S. Gallagher, A. S. Evans, K. M. Dasyra, J. K. Kotilainen
https://

High resolution ALMA observations of H$_2$S in LIRGS (Dense gas and shocks in outflows and CNDs)
Molecular gas plays a critical role in regulating star formation and nuclear activity in galaxies. Sulphur bearing molecules, such as H2S, are sensitive to the physical and chemical environments in which they reside and are potential tracers of shocked, dense gas in galactic outflows and active galactic nuclei (AGN). We aim to investigate the origin of H2S emission and its relation to dense gas and outflow activity in the central regions of nearby infrared luminous galaxies. We present ALMA Ban…

Nonminimal infrared gravitational reheating in light of ACT
Ayan Chakraborty, Debaprasad Maity, Rajesh Mondal
https://arxiv.org/abs/2506.02141 https://

Nonminimal infrared gravitational reheating in light of ACT
Inflation is known to produce large infrared scalar fluctuations. Further, if a scalar field $(χ)$ is non-minimally coupled with gravity through $ξχ^2 R$, those infrared modes experience \textit{tachyonic instability} during and after inflation. Those large non-perturbative infrared modes can collectively produce hot Big Bang universe upon their horizon entry during the post-inflationary period. We indeed find that for reheating equation of state (EoS), $w_ϕ > 1/3$, and coupling strength, $…

James Webb Space Telescope Observations of the Nearby and Precisely-Localized FRB 20250316A: A Potential Near-IR Counterpart and Implications for the Progenitors of Fast Radio Bursts
Peter K. Blanchard, Edo Berger, Shion E. Andrew, Aswin Suresh, Kohki Uno, Charles D. Kilpatrick, Brian D. Metzger, Harsh Kumar, Navin Sridhar, Amanda M. Cook, Yuxin Dong, Tarraneh Eftekhari, Wen-fai Fong, Walter W. Golay, Daichi Hiramatsu, Ronniy C. Joseph, Victoria M. Kaspi, Mattias Lazda, Calvin Leung, K…

James Webb Space Telescope Observations of the Nearby and Precisely-Localized FRB 20250316A: A Potential Near-IR Counterpart and Implications for the Progenitors of Fast Radio Bursts
We present deep James Webb Space Telescope near-infrared imaging to search for a quiescent or transient counterpart to FRB 20250316A, which was precisely localized with the CHIME/FRB Outriggers array to an area of $11\times13$ pc in the outer regions of NGC 4141 at $d\approx40$ Mpc. Our F150W2 image reveals a faint source near the center of the FRB localization region ("NIR-1"; $M_{\rm F150W2}\approx-2.5$ mag; probability of chance coincidence $\approx0.36$), the only source within $\approx2.7Ï…

An infrared bound on the ultraviolet bounce
Mehrdad Mirbabayi, Giovanni Villadoro
https://arxiv.org/abs/2506.09842 https://arxiv.org/…

An infrared bound on the ultraviolet bounce
Sometimes a local minimum is known to be a metastable vacuum inside the low-energy EFT, but the true vacuum lies outside, and the bounce solution mediating the decay cannot be found. For single-field decay, Espinosa has proposed a family of configurations called ``pseudo-bounces'' as a way to constrain the decay rate. They are parametrized by the central field value $Φ_0$ and constructed without the knowledge of the true vacuum. We prove that the pseudo-bounce family has a monotonically decrea…

Van der Waals waveguide quantum electrodynamics probed by infrared nano-photoluminescence
Samuel L. Moore, Hae Yeon Lee, Nicholas Rivera, Yuzuka Karube, Mark Ziffer, Emanuil S. Yanev, Thomas P. Darlington, Aaron J. Sternbach, Madisen A. Holbrook, Jordan Pack, Xiaodong Xu, Cory R. Dean, Jonathan S. Owen, P. James Schuck, Milan Delor, Xiaoyang Zhu, James Hone, Dmitri N. Basov

Van der Waals waveguide quantum electrodynamics probed by infrared nano-photoluminescence
Atomically layered van der Waals (vdW) materials exhibit remarkable properties, including highly-confined infrared waveguide modes and the capacity for infrared emission in the monolayer limit. Here, we engineered structures that leverage both of these nano-optical functionalities. Specifically, we encased a photoluminescing atomic sheet of MoTe2 within two bulk crystals of WSe2, forming a vdW waveguide for the embedded light-emitting monolayer. The modified electromagnetic environment offered …

Leveraging active learning-enhanced machine-learned interatomic potential for efficient infrared spectra prediction
Nitik Bhatia, Patrick Rinke, Ondrej Krejci
https://arxiv.org/abs/2506.13486

Leveraging active learning-enhanced machine-learned interatomic potential for efficient infrared spectra prediction
Infrared (IR) spectroscopy is a pivotal analytical tool as it provides real-time molecular insight into material structures and enables the observation of reaction intermediates in situ. However, interpreting IR spectra often requires high-fidelity simulations, such as density functional theory based ab-initio molecular dynamics, which are computationally expensive and therefore limited in the tractable system size and complexity. In this work, we present a novel active learning-based framework…

The Modeling Landscape of Extragalactic CO in CMB Surveys
Yogesh Mehta, Anirban Roy, Simon Foreman, Alexander van Engelen, Nick Battaglia
https://arxiv.org/abs/2506.16028

The Modeling Landscape of Extragalactic CO in CMB Surveys
Extragalactic carbon monoxide (CO) line emission will likely be an important signal in current and future Cosmic Microwave Background (CMB) surveys on small scales. However, great uncertainty surrounds our current understanding of CO emission. We investigate the implications of this modeling uncertainty on CMB surveys. Using a range of star formation rate and luminosity relations, we generate a suite of CO simulations across cosmic time, together with the broadband cosmic infrared background (C…

This https://arxiv.org/abs/2505.14277 has been replaced.
initial toot: https://mastoxiv.page/@a…

Infrared markers of topological phase transitions in quantum spin Hall insulators
Using first principles techniques, we show that infrared optical response can be used to discriminate between the topological and the trivial phases of two-dimensional quantum spin Hall insulators (QSHI). We showcase germanene and jacutingaite, of recent experimental realization, as prototypical systems where the infrared spectrum is discontinuous across the transition, due to sudden and large discretized jumps of the value of Born effective charges (up to 2). For these materials, the topologic…

Dynamically Tunable Membrane Metasurfaces for Infrared Spectroscopy
Furkan Kuruoglu, Samir Rosas, Jin-Woo Cho, David A. Czaplewski, Yuri Kivshar, Mikhail Kats, Filiz Yesilkoy
https://arxiv.org/abs/2506.10115

Dynamically Tunable Membrane Metasurfaces for Infrared Spectroscopy
Mid-infrared spectroscopy enables biochemical sensing by identifying vibrational molecular fingerprints, but it faces limitations in instrumentation portability and analytical sensitivity. Optical metasurfaces with strong mid-IR photonic resonances provide an attractive solution towards on-chip spectrometry and sensitive molecular detection, yet their static nature hinders their anticipated impact. Here, we introduce and demonstrate dynamically tunable silicon membrane metasurfaces exhibiting h…

Electrically reconfigurable nonvolatile flatband absorbers in the mid-infrared with wide spectral tuning range
Romil Audhkhasi, Virat Tara, Matthew Klein, Andrew Tang, Rui Chen, Shivashankar Vangala, Joshua R. Hendrickson, Arka Majumdar
https://arxiv.org/abs/2506.07258

Electrically reconfigurable nonvolatile flatband absorbers in the mid-infrared with wide spectral tuning range
While recent advances in reconfigurable photonics have provided new avenues for manipulating light on the subwavelength scale, on-demand control of infrared absorption remains elusive. Here, we experimentally demonstrate a plasmonic metasurface based on the phase change material Ge2Sb2Te5 with in-situ electrically-switchable infrared absorption in the 3-5 microns wavelength range. Unlike traditional infrared microstructures based on volatile phase change materials, our device does not require t…

The SPHEREx Sky Simulator: Science Data Modeling for the First All-Sky Near-Infrared Spectral Survey
Brendan P. Crill, Yoonsoo P. Bach, Sean A. Bryan, Jean Choppin de Janvry, Ari J. Cukierman, C. Darren Dowell, Spencer W. Everett, Candice Fazar, Tatiana Goldina, Zhaoyu Huai, Howard Hui, Woong-Seob Jeong, Jae Hwan Kang, Phillip M. Korngut, Jae Joon Lee, Daniel C. Masters, Chi H. Nguyen, Jeonghyun Pyo, Teresa Symons, Yujin Yang, Michael Zemcov, Rachel Akeson, Matthew L. N. Ashby, James J…

The SPHEREx Sky Simulator: Science Data Modeling for the First All-Sky Near-Infrared Spectral Survey
We describe the SPHEREx Sky Simulator, a software tool designed to model science data for NASA's SPHEREx mission that will carry out a series of all-sky spectrophotometric surveys at $\sim$6'' spatial resolution in 102 spectral channels spanning 0.75 to 5 $μ$m. The Simulator software implements models for astrophysical emission, instrument characteristics, and survey strategy to generate realistic infrared sky scenes as they will be observed by SPHEREx. The simulated data includes a variety of…

The VVV near-IR galaxy catalogue of the southern Galactic disc
M. V. Alonso, L. D. Baravalle, J. L. Nilo Castell\'on, C. Villalon, M. Soto, M. A. Sgr\'o, I. V. Daza Perilla, C. Valotto, M. Lares, D. Minniti, P. Marchant Cort\'es, F. Milla Castro, M. Hempel, J. Alonso-Garc\'ia, L. Macri, A. Pichel, N. Masetti, R. K. Saito, M. G\'omez

The VVV near-IR galaxy catalogue of the southern Galactic disc
The distribution of galaxies in the Zone of Avoidance (ZoA) is incomplete due to the presence of our own Galaxy. Our research focused on the identification and characterisation of galaxies in the ZoA, using the new near-infrared data from the VVVX survey in the regions that cover the southern Galactic disc. We used our previously-established procedure based on photometric and morphological criteria to identify galaxies. The large data volume collected by the VVVX required alternatives to visual…

This https://arxiv.org/abs/2405.08906 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csHC_…

Functional Near-Infrared Spectroscopy (fNIRS) Analysis of Interaction Techniques in Touchscreen-Based Educational Gaming
Educational games enhance learning experiences by integrating touchscreens, making interactions more engaging and intuitive for learners. However, the cognitive impacts of educational game-play input modalities, such as the hand and stylus technique, are unclear. We compared the experience of using hands vs. a stylus for touchscreens while playing an educational game by analyzing oxygenated hemoglobin collected by functional Near-Infrared Spectroscopy and self-reported measures. In addition, we…

Flavoured jet algorithms: a comparative study
Arnd Behring, Simone Caletti, Francesco Giuli, Radoslaw Grabarczyk, Andreas Hinzmann, Alexander Huss, Joey Huston, Ezra D. Lesser, Simone Marzani, Davide Napoletano, Rene Poncelet, Daniel Reichelt, Alberto Rescia, Gavin P. Salam, Ludovic Scyboz, Federico Sforza, Andrzej Siodmok, Giovanni Stagnitto, James Whitehead, Ruide Xu

Flavoured jet algorithms: a comparative study
The accurate identification of heavy-flavour jets, those which originate from bottom or charm quarks, is crucial for precision studies of the Standard Model and searches for new physics. However, assigning flavour to jets presents significant challenges, primarily due to issues with infrared and collinear (IRC) safety. This paper aims to address these challenges by evaluating recently-proposed jet algorithms designed to be IRC-safe and applicable in high-precision measurements. We compare these…

Operation of a dual-phase xenon detector with wavelength sensitivity from ultraviolet to infrared
Robert Hammann, Kai B\"ose, Steffen Form, Luisa H\"otzsch, Teresa Marrod\'an Undagoitia
https://arxiv.org/abs/2505.24682

Operation of a dual-phase xenon detector with wavelength sensitivity from ultraviolet to infrared
Xenon, in both its gaseous and liquid phase, offers excellent scintillation and ionization properties, making it an ideal target medium for rare event searches. We report on measurements performed with a dual-phase xenon time projection chamber sensitive to wavelengths from 170 nm to 1700 nm. In addition to the well-established ultraviolet (UV) scintillation, we observe coincident signals in a photomultiplier tube sensitive to infrared (IR) light, associated with both prompt scintillation in th…

Replaced article(s) found for eess.IV. https://arxiv.org/list/eess.IV/new
[1/1]:
- ATFusion: An Alternate Cross-Attention Transformer Network for Infrared and Visible Image Fusion
Han Yan, Songlei Xiong, Long Wang, Lihua Jian, Gemine Vivone

Euclid: The potential of slitless infrared spectroscopy: A z=5.4 quasar and new ultracool dwarfs
E. Ba\~nados, V. Le Brun, S. Belladitta, I. Momcheva, D. Stern, J. Wolf, M. Ezziati, D. J. Mortlock, A. Humphrey, R. L. Smart, S. L. Casewell, A. P\'erez-Garrido, B. Goldman, E. L. Mart\'in, A. Mohandasan, C. Reyl\'e, C. Dominguez-Tagle, Y. Copin, E. Lusso, Y. Matsuoka, K. McCarthy, F. Ricci, H. -W. Rix, H. J. A. Rottgering, J. -T. Schindler, J. R. Weaver, A. Allaoui, T. Bedrine…

Euclid: The potential of slitless infrared spectroscopy: A z=5.4 quasar and new ultracool dwarfs
We demonstrate the potential of Euclid's slitless spectroscopy to discover high-redshift (z>5) quasars and their main photometric contaminant, ultracool dwarfs. Sensitive infrared spectroscopy from space is able to efficiently identify both populations, as demonstrated by Euclid Near-Infrared Spectrometer and Photometer Red Grism (NISP RGE) spectra of the newly discovered z=5.404 quasar EUCL J181530.01+652054.0, as well as several ultracool dwarfs in the Euclid Deep Field North and the Euclid E…

Enhanced Absorption in Thin-Film Silicon Solar Cells Using a Broadband Plasmonic Nanostructure
Partha Mondal, Omar Alkhazragi, Hakan Bagci
https://arxiv.org/abs/2506.16118

Enhanced Absorption in Thin-Film Silicon Solar Cells Using a Broadband Plasmonic Nanostructure
The design and fabrication of a metal-dielectric-metal absorber that achieves strong absorption from the ultraviolet (UV) to the near-infrared (near-IR) spectrum are presented. The proposed nanostructure consists of a periodic titanium (Ti) array as the top layer, a thin silicon dioxide (SiO2) spacer, and a continuous aluminum (Al) layer serving as the back reflector. Comprehensive optimization of structural parameters results in an average absorptance of 96% in the 280-1000 nm wavelength range…

Self-organized criticality in a relativistic Yukawa theory with Luttinger fermions
Holger Gies, Marta Picciau
https://arxiv.org/abs/2506.13441 https://

Self-organized criticality in a relativistic Yukawa theory with Luttinger fermions
We propose and investigate a Yukawa model featuring a dynamical scalar field coupled to relativistic Luttinger fermions. Using the functional renormalization group (RG) as well as large-$N_{\text{f}}$ or perturbative expansions, we observe the emergence of an infrared attractive partial fixed point in all interactions at which all couplings become RG irrelevant. At the partial fixed point, the scalar mass parameter is RG marginal, featuring a slow logarithmic running towards the regime of spont…

Performance of the image persistence model for Euclid infrared detectors
B. Kubik, R. Barbier, G. Smadja, S. Ferriol, Y. Conseil, Y. Copin, W. Gillard, S. Dusini, K. Jahnke, E. Prieto, N. Auricchio, E. Balbi, A. Balestra, P. Battaglia, V. Capobianco, R. Chary, L. Corcione, F. Cogato, G. Delucchi, E. Franceschi, L. Gabarra, F. Gianotti, F. Grupp, E. Lentini, S. Ligori, E. Medinaceli, G. Morgante, K. Paterson, E. Romelli, L. Sauniere, M. Schirmer, C. Sirignano G. Testera, M. Trifoglio, A. Troja, L. Valenziano, M. Frailis, M. Scodeggio, J. -C. Barriere, M. Berthe, C. Bodendorf, A. Caillat, M. Carle, R. Casas, H. Cho, A. Costille, F. Ducret, B. Garilli, W. Holmes, F. Hormuth, A. Hornstrup, M. Jhabvala, R. Kohley, D. Le Mignant, P. B. Lilje, I. Lloro, C. Padilla, G. Polenta, J. -C. Salvignol, G. Seidel, B. Serra, A. Secroun, L. Stanco, R. Toledo-Moreo, S. Anselmi, E. Borsato, L. Caillat, C. Colodro-Conde, V. Conforti, J. E. Davies, A. Renzi, F. Dal Corso, S. Davini, A. Derosa, J. J. Diaz, S. Di Domizio, D. Di Ferdinando, R. Farinelli, A. G. Ferrari, F. Fornari, F. Giacomini, O. Krause, F. Laudisio, J. Macias-Perez, J. Marpaud, N. Mauri, R. da Silva, M. Niclas, F. Passalacqua, I. Risso, P. Lagier, A. N. Sorensen, P. Stassi, J. Steinwagner, M. Tenti, C. Thizy, S. Tosi, R. Travaglini, O. Tubio, C. Valieri, S. Ventura, C. Vescovi, J. Zoubian
#toXiv_bot_toot

The VMC Survey -- LIV. Anomalous Cepheids in the Magellanic Clouds Period-Luminosity relations in the near-infrared bands
Teresa Sicignano, Vincenzo Ripepi, Marina Rejkuba, Martino Romaniello, Marcella Marconi, Roberto Molinaro, Anupam Bhardwaj, Giulia De Somma, Maria-Rosa Cioni, Felice Cusano, Gisella Clementini, Richard de Grijs, Valentin Ivanov, Jesper Storm, Martin Groenewegen

The VMC Survey -- LIV. Anomalous Cepheids in the Magellanic Clouds Period-Luminosity relations in the near-infrared bands
Anomalous Cepheids (ACs) are less studied metal-poor pulsating stars ([Fe/H]<-1.5) compared to Classical Cepheids (CCs) and RR Lyrae stars. They follow distinct Period-Luminosity (PL) and Period-Wesenheit (PW) relations and pulsate in either the fundamental (F) or first overtone (1O) mode. Our goal is to assess the precision and accuracy of AC-based distances and evaluate their potential for establishing an independent distance scale. We derive new PL and PW relations for F-mode, 1O-mode, and, …

Reliable Noninvasive Glucose Sensing via CNN-Based Spectroscopy
El Arbi Belfarsi, Henry Flores, Maria Valero
https://arxiv.org/abs/2506.13819 https://

Reliable Noninvasive Glucose Sensing via CNN-Based Spectroscopy
In this study, we present a dual-modal AI framework based on short-wave infrared (SWIR) spectroscopy. The first modality employs a multi-wavelength SWIR imaging system coupled with convolutional neural networks (CNNs) to capture spatial features linked to glucose absorption. The second modality uses a compact photodiode voltage sensor and machine learning regressors (e.g., random forest) on normalized optical signals. Both approaches were evaluated on synthetic blood phantoms and skin-mimicking…

Clumpiness of galaxies revealed in the near-infrared with COSMOS-Web
Wilfried Mercier, Boris Sindhu Kalita, Marko Shuntov, Rafael C. Arango-Toro, Olivier Ilbert, Laurence Tresse, Yohan Dubois, Clotilde Laigle, Hossein Hatamnia, Nicolas McMahon, Andreas Faisst, Isa Cox, Maxime Trebitsch, Leo Michel-Dansac, Si-Yue Yu, Michaela Hirschmann, Marc Huertas-Company, Arianna Long, Anton Koekemoer, Gr\'egoire Aufort, Joseph Lewis, Ghassem Gozaliasl, R. Michael Rich, Jason Rhodes, Henry Joy M…

Clumpiness of galaxies revealed in the near-infrared with COSMOS-Web
Clumps in the rest-frame UV emission of galaxies have been observed for decades. Since the launch of the James Webb Space Telescope (JWST), a large population is detected in the rest-frame near-infrared (NIR), raising questions about their formation mechanism. We investigate the presence and properties of NIR over-densities (hereafter substructures) in star-forming and quiescent galaxies at 1 < z < 4 to understand their link to the evolution of their host galaxy. We identify substructures in JW…

An Assessment of Organics Detection and Characterization on the Surface of Europa with Infrared Spectroscopy
Ishan Mishra, Nikole Lewis, Jonathan Lunine, Kevin P. Hand
https://arxiv.org/abs/2506.01842

An Assessment of Organics Detection and Characterization on the Surface of Europa with Infrared Spectroscopy
Organics, if they do exist on Europa, may only be present in trace amounts on the surface. NASA's upcoming mission Europa Clipper is going to provide global, high quality data of the surface of Europa in the near-infrared (NIR), specifically the 3-5~$μ$m region, where organics are rich in spectroscopic features. In this work we investigate Europa Clipper's ability to constrain the abundance of selected trace species of interest that span different chemical bonds found in organics, such as C-H,…

Fundamental Parameters for Central Stars of 103 Infrared Bowshock Nebulae
Nikhil Patten, Henry A. Kobulnicky, Matthew S. Povich, Angelica S. Whisnant, Sydney Andrews, Alexandra Boone, Srujan Dandu, Naomi Jones, S. Nick Justice, Dylan Hope, Alexander Larsen, Ryan McCrory, Julia Meredith, Maria Renee Meza, Alexandra C. Rosenthal, William Salazar, Alexander R. Sterling, Noshin Yesmin, Daniel A. Dale

Fundamental Parameters for Central Stars of 103 Infrared Bowshock Nebulae
Stellar bowshock nebulae are arcuate shock fronts formed by the interaction of radiation-driven stellar winds and the relative motion of the ambient interstellar material. Stellar bowshock nebulae provide a promising means to measure wind-driven mass loss, independent of other established methods. In this work, we characterize the stellar sources at the center of bowshock nebulae drawn from all-sky catalogs of 24 $μ$m-selected nebulae. We obtain new, low-resolution blue optical spectra for \nu…

This https://arxiv.org/abs/2501.01860 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Constraining eV-scale axion-like particle dark matter: insights from the M87 Galaxy
Axion-like particles (ALPs) can account for the observed dark matter (DM) of the Universe and if their masses are at the eV scale, they can decay into infrared, optical and ultraviolet photons with a decay lifetime larger than the age of the Universe.We analyze multi-wavelength data obtained from the central region of Messier 87 (M87) galaxy by several telescopes, such as, Swift, Astrosat, Kanata, Spitzer and International Ultraviolet Explorer in the infrared to ultraviolet frequencies ($\sim 2…

Near-extremal holographic charge correlators
Blaise Gout\'eraux, David M. Ramirez, Mikel Sanchez-Garitaonandia, Cl\'ement Supiot
https://arxiv.org/abs/2506.11974

Near-extremal holographic charge correlators
We analytically compute the low-temperature charge correlators in near-extremal black holes with a planar horizon and an infrared $\mathrm{AdS}_2\times \Bbb{R}^2$ extremal geometry, finding excellent agreement with numerical calculations. The analytical result consistently describes the crossover between the hydrodynamic diffusive regime at low frequencies and wavenumbers, and the quantum, zero-temperature regime at high frequencies and wavenumbers. We analytically resolve the successive collis…

JWST reveals cosmic ray dominated chemistry in the local ULIRG IRAS 07251$-$0248
G. Speranza, M. Pereira-Santaella, M. Ag\'undez, E. Gonz\'alez-Alfonso, I. Garc\'ia-Bernete, J. R. Goicoechea, M. Imanishi, D. Rigopoulou, M. G. Santa-Maria, N. Thatte
https://arxiv.org/abs/2506.17390

JWST reveals cosmic ray dominated chemistry in the local ULIRG IRAS 07251$-$0248
We analyze the ro-vibrational absorption bands of various molecular cations (HCO$^+$, HCNH$^+$, and N$_2$H$^+$) and neutral species (HCN, HNC, and HC$_3$N) detected in the JWST/MIRI MRS spectrum (4.9-27.9 $μ$m) of the local ultra luminous infrared galaxy (ULIRG) IRAS~07251$-$0248. We find that the molecular absorptions are blueshifted by 160 km s$^{-1}$ relative to the systemic velocity of the target. Using local thermal equilibrium (LTE) excitation models, we derive rotational temperatures ($…

NIR filter transformations across the HR diagram: JWST, Roman, and Euclid
M. J. Durbin, R. L. Beaton, A. J. Monson, B. Swidler
https://arxiv.org/abs/2506.13627

NIR filter transformations across the HR diagram: JWST, Roman, and Euclid
We present new color transformations between select near-infrared filters on JWST/NIRCam, Euclid/NISP, Roman/WFI, HST, and ground-based $izY+IJHK_S$, for a total of 105 unique filter combinations. Additionally, we apply these transformations to predict the color-magnitude relation of the tip of the red giant branch as seen with JWST, Euclid, and Roman based on theoretical results for HST and 2MASS filters; for JWST we find good agreement with empirical results in the literature. We also find ty…

A three-dimensional, multi-wavelength view and time-dependent analysis of the Milky Way's local ionized gas
Lewis McCallum, Kenneth Wood, Robert Benjamin, Dhanesh Krishnarao, Anna F. McLeod
https://arxiv.org/abs/2506.17689

A three-dimensional, multi-wavelength view and time-dependent analysis of the Milky Way's local ionized gas
This work is the continuation of a series attempting to characterize the local warm ionized medium through both static and time dependent simulations. We build upon our three dimensional, observationally-derived simulation of the local photoionized interstellar medium - based on static photoionization simulations constrained by 3D dust maps - to include metals required to predict collisionally excited optical and infrared emission lines, providing the first all-sky prediction of a series of lin…

Polycyclic Aromatic Hydrocarbons in the circumstellar medium of Herbig Ae/Be stars
R. Arun, Blesson Mathew, B. Shridharan, K. Ujjwal, Akhil Krishna R, G. Maheswar, Sreeja S. Kartha
https://arxiv.org/abs/2506.14218

Polycyclic Aromatic Hydrocarbons in the circumstellar medium of Herbig Ae/Be stars
We present a comprehensive mid-infrared spectroscopic survey of 124 Herbig Ae/Be stars using newly processed Spitzer/IRS spectra from the newly released CASSISjuice database. Based on prominent dust and molecular signatures (polycyclic aromatic hydrocarbons, silicates, and hydrogenated amorphous carbons), we classify the stars into five groups. Our analysis reveals that 64% of the spectra show PAH emission, with detections peaking in the stellar effective temperature range 7000-11000 K (B9-A5).…

Repeating Flares, X-ray Outbursts and Delayed Infrared Emission: A Comprehensive Compilation of Optical Tidal Disruption Events
D. A. Langis, I. Liodakis, K. I. I. Koljonen, A. Paggi, N. Globus, L. Wyrzykowski, P. J. Miko{\l}ajczyk, K. Kotysz, P. Zieli\'nski, N. Ihanec, J. Ding, D. Morshed, Z. Torres
https://arxiv.org/abs/25…

Repeating Flares, X-ray Outbursts and Delayed Infrared Emission: A Comprehensive Compilation of Optical Tidal Disruption Events
Tidal disruption events (TDEs) have been proposed as valuable laboratories for studying dormant black holes. However, progress in this field has been hampered by the limited number of observed events. In this work, we present TDECat, a comprehensive catalogue of 134 confirmed TDEs (131 optical TDEs and 3 jetted TDEs) discovered up to the end of 2024, accompanied by multi-wavelength photometry (X-ray, UV, optical, and IR) and publicly available spectra. We also study the statistical properties, …

On-chip pulse generation at 8 {\mu}m wavelength
Annabelle Bricout, Mathieu Bertrand, Philipp T\"aschler, Barbara Schneider, Victor Turpaud, Stefano Calcaterra, Davide Impelluso, Marco Faverzani, David Bouville, Jean-Ren\'e Coudevylle, Samson Edmond, Etienne Herth, Carlos Alonso-Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella, J\'er\^ome Faist, Delphine Marris-Morini

On-chip pulse generation at 8 μm wavelength
The mid-infrared spectral region holds growing importance for applications such as gas sensing and spectroscopy. Although compact ultrashort pulse laser sources are essential to enable these applications, their realization in this spectral range remains an open challenge. We demonstrate an integrated approach to generate pulses in the mid-infrared based on chirped Bragg gratings engineered to compensate for the group delay dispersion of quantum cascade laser frequency comb sources. SiGe graded-…

Origin of Radio Emission in Three Nearby Ultraluminous Infrared Galaxies with Signatures of Luminous Buried Active Galactic Nuclei
Takayuki J. Hayashi (National Astronomical Observatory of Japan), Yoshiaki Hagiwara (Toyo University), Masatoshi Imanishi (National Astronomical Observatory of Japan)
https://arxiv.org/abs/2506.10549…

Origin of Radio Emission in Three Nearby Ultraluminous Infrared Galaxies with Signatures of Luminous Buried Active Galactic Nuclei
We report multifrequency Very Long Baseline Array (VLBA) observations at 2.3 and 8.4GHz of three nearby ultraluminous infrared galaxies, identified via mid-infrared spectroscopic analyses as hosting deeply embedded active galactic nuclei (AGNs). Milliarcsecond-scale observations at both frequencies reveal compact continuum emission in IRAS F00188$-$0856 and IRAS F01298$-$0744, accounting for $\sim10$% of the flux density measured on arcsecond scales. The non-detection in IRAS F00091$-$0738 and …

The Mineralogical Connection Between M- and K-type Asteroids as Indicated by Polarimetry
Joseph R. Masiero, Yuna G. Kwon, Elena Selmi, Manaswi Kondapally
https://arxiv.org/abs/2506.14210

The Mineralogical Connection Between M- and K-type Asteroids as Indicated by Polarimetry
Polarimetry has the capacity to provide a unique probe of the surface properties of asteroids. Trends in polarization behavior as a function of wavelength trace asteroid regolith mineral properties that are difficult to probe without measurements in situ or on returned samples. We present recent results from our ongoing survey of near-infrared polarimetric properties of asteroids. Our data reveal a mineralogical link between asteroids in the broader M- and K- spectral classes. In particular, M-…

This https://arxiv.org/abs/2503.08647 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

JWST's First View of Tidal Disruption Events: Compact, Accretion-Driven Emission Lines & Strong Silicate Emission in an Infrared-selected Sample
Mid-infrared (MIR) emission from tidal disruption events (TDEs) is a powerful probe of the circumnuclear environment around dormant supermassive black holes. This emission arises from the reprocessing of intrinsic emission into thermal MIR emission by circumnuclear dust. While the majority of optical- and X-ray-selected TDEs show only weak dust echoes consistent with primarily unobscured sight lines, there have been growing efforts aimed at finding TDEs in obscured environments using MIR select…

Diversity of Cold Worlds: A Near Complete Spectral Energy Distribution for 2MASS J04151954-0935066 using JWST
Sherelyn Alejandro Merchan, Jacqueline K. Faherty, Genaro Su\'arez, Kelle L. Cruz, Adam J. Burgasser, Jonathan Gagn\'e, Callie E. Hood, Eileen C. Gonzales, Daniella C. Bardalez Gagliuffi, Jolie L'Heureux, Johanna M. Vos, Adam C. Schneider, Aaron M. Meisner, Caroline Morley, J. Davy Kirkpatrick, Federico Marocco, Rocio Kiman, Charles A. Beichman, Ben Burningham, Dan …

Diversity of Cold Worlds: A Near Complete Spectral Energy Distribution for 2MASS J04151954-0935066 using JWST
We present the a near complete spectral energy distribution (SED) for an extrasolar world: the T8 brown dwarf 2MASS~J04151954$-$0935066. Spanning from optical to mid-infrared (0.7--20.4 micron) wavelengths, the SED for this substellar atmosphere is constructed from new JWST NIRSpec G395H ($R\sim$2700) and Magellan FIRE echelle ($R\sim$8000) near-infrared spectra, along with MIRI mid-infrared photometry complemented by spectra from Keck I, IRTF, Magellan, AKARI, Spitzer and photometry from vario…

The near infrared airglow continuum conundrum. Constraints for ground-based faint object spectroscopy
J. K. M. Viuho (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark, Nordic Optical Telescope, Rambla Jose Ana Fernandez Perez 7, ES-38711 Brena Baja, Spain, Department of Physics and Astronomy, Aarhus University, Munkegade 120, DK-8000 Aarhus C, Denmark), J. P. U. Fynbo (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark), M. I. Andersen (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark)
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Shockingly Effective: Cluster Winds as Engines of Feedback in Starburst Galaxy VV 114
Justin A. Kader, Vivian U, Jeffrey A. Rich, Marina Bianchin, Sean T. Linden, Anne M. Medling, Tanio Diaz-Santos, George C. Privon, Rosalie McGurk, Lee Armus, Loreto Barcos-Munoz, Gabriela Canalizo, Vassilis Charmandaris, Aaron S. Evans, Tianmu Gao, Justin Howell, Hanae Inami, Thomas Lai, Kirsten L. Larson, Matthew A. Malkan, Maria Sanchez-Garcia, Christopher D. Martin, Mateusz Matuszewski, Claire E. M…

Shockingly Effective: Cluster Winds as Engines of Feedback in Starburst Galaxy VV 114
We present high-resolution Keck Cosmic Web Imager (KCWI) and MUSE IFU spectroscopy of VV 114, a local infrared-luminous merger undergoing a vigorous starburst and showing evidence of galactic-scale feedback. The high-resolution data allow for spectral deblending of the optical emission lines and reveal a broad emission line component ($σ_{\rm{broad}} \sim$~100--300 km s$^{-1}$) with line ratios and kinematics consistent with a mixture of ionization by stars and radiative shocks. The shock frac…

Expansion Signatures in 35 HII Regions traced by SOFIA [CII] Emission
Timothy Faerber, Loren D. Anderson, Matteo Luisi, Lars Bonne, Nicola Schneider, Volker Ossenkopf-Okada, Alexander Tielens, Robert Simon, Markus R\"ollig
https://arxiv.org/abs/2506.16700

Expansion Signatures in 35 HII Regions traced by SOFIA [CII] Emission
We analyze the expansion signatures of 35 HII regions mapped in [CII] 158 micron emission by the Stratospheric Observatory for Infrared Astronomy (SOFIA). The [CII] emission primarily traces photodissociation regions (PDRs) at the transition between ionized and neutral gas. The brightness and narrow linewidth of [C II] allow us to measure PDR expansion. Bubble-shaped regions often exhibit expansion, while irregular-shaped ones are less likely to. Of the 35 HII regions, 12 (~34%) exhibit clear e…

On the accretion luminosity of Class I protostars
L. Testi, A. Natta, S. Gozzi, C. F. Manara, J. P. Williams, R. Claes, U. Lebreuilly, P. Hennebelle, R. Klessen, S. Molinari
https://arxiv.org/abs/2506.14601

On the accretion luminosity of Class I protostars
The value of the accretion luminosity during the early phases of star formation is a crucial information which helps us understand how stars form, yet it is still very difficult to obtain. We develop a new methodology to measure accretion luminosity using mid-infrared hydrogen recombination lines, and apply it to a limited sample of Class~I protostars in the Taurus and Ophiuchus star forming regions. We adopt the commonly used assumption that the properties of disk-protostar accretion in Class …

Integrated thin film lithium niobate mid-infrared modulator
Pierre Didier, Prakhar Jain, Mathieu Bertrand, Jost Kellner, Oliver Pitz, Zhecheng Dai, Mathias Beck, Baile Chen, Jerome Faist, Rachel Grange
https://arxiv.org/abs/2505.23632

Integrated thin film lithium niobate mid-infrared modulator
The mid-infrared spectral range holds great promise for applications such as molecular spectroscopy and telecommunications. Many key molecules exhibit strong absorption features in this range, and free-space optical communication benefits from reduced atmospheric attenuation and low transmission losses in specific wavelength bands spanning from 3 to 14 μm. Recent progress in MIR photonics has been fuelled by the rapid development of efficient light sources and detectors. However, further advan…

Gone with the Wind: JWST-MIRI Unveils a Strong Outflow from the Quiescent Stellar-Mass Black Hole A0620-00
Zihao Zuo, Gabriele Cugno, Joseph Michail, Elena Gallo, David M. Russell, Richard M. Plotkin, Fan Zou, M. Cristina Baglio, Piergiorgio Casella, Fraser J. Cowie, Rob Fender, Poshak Gandhi, Sera Markoff, Federico Vincentelli, Fraser Lewis, Jon M. Miller, James C. A. Miller-Jones, Alexandra Veledina

Gone with the Wind: JWST-MIRI Unveils a Strong Outflow from the Quiescent Stellar-Mass Black Hole A0620-00
We present new observations of the black hole X-ray binary A0620-00 using the Mid-Infrared Instrument on the James Webb Space Telescope, during a state where the X-ray luminosity is 9 orders of magnitude below Eddington, and coordinated with radio, near-infrared and optical observations. The goal is to understand the nature of the excess mid-infrared (MIR) emission originally detected by Spitzer red-ward of 8 $μ$m. The stellar-subtracted MIR spectrum is well-modeled by a power law with a spect…

JWST spectroscopy of a blue binary cold classical Kuiper belt object
Ian Wong, Bryan J. Holler, Wesley C. Fraser, Michael E. Brown
https://arxiv.org/abs/2506.11972

JWST spectroscopy of a blue binary cold classical Kuiper belt object
We present observations of two binary systems within the cold classical region of the Kuiper belt -- 2001 XR254 and 2016 BP81 -- obtained with the JWST Near-Infrared Spectrograph. The measured reflectance spectrum of 2001 XR254 is characteristic of the red cold classicals, with strong features due to carbon dioxide, carbon monoxide, and methanol ices. In contrast, 2016 BP81 is a blue binary, with a water-ice-rich surface composition. The two components of the 2016 BP81 binary display identical …

Record-high-Q AMTIR-1 microresonators for mid- to long-wave infrared nonlinear photonics
Liu Yang, Ryo Sugano, Ryomei Takabayashi, Hajime Kumazaki, Yongyong Zhuang, Xiaoyong Wei, Takasumi Tanabe, Shun Fujii
https://arxiv.org/abs/2505.23362

Record-high-Q AMTIR-1 microresonators for mid- to long-wave infrared nonlinear photonics
AMTIR-1 chalcogenide glass has shown its potential for use in thermal imaging systems owing to its low refractive index, thermal resistance and high transparency across the infrared wavelength regime. Here we report a millimeter-scale high-Q whispering gallery mode microresonator made of AMTIR-1. The recorded Q-factor has reached $1.2\times10^7$ at 1550~nm, which is almost two-orders of magnitude higher than previously reported values. We characterize the thermal properties, where low thermal c…

Inner disc and circumplanetary material in the PDS 70 system
Daniele Fasano, Myriam Benisty, Pietro Curone, Stefano Facchini, Francesco Zagaria, Tomohiro C. Yoshida, Kiyoaki Doi, Anibal Sierra, Sean Andrews, Jaehan Bae, Andrea Isella, Nicol\'as T. Kurtovic, Laura M. P\'erez, Paola Pinilla, Luna Rampinelli, Richard Teague
https://

Inner disc and circumplanetary material in the PDS 70 system
The two giant protoplanets directly imaged in the dust-depleted cavity of PDS 70 offer a unique opportunity to study ongoing planet formation. Both planets have been detected in infrared thermal emission and in H$α$, indicating active accretion. We calibrate and analyse archival ALMA Band 6 and 7 observations of PDS 70 from 2019, 2021, and 2023 to search for circumplanetary material and assess its motion. Using 2D visibility modelling of the high-resolution (~0.11"x0.08" in Band 6; ~0.05"x0.05…

Luminous, rapidly declining supernovae as stripped transitional objects in low metallicity environments: the case of SN 2022lxg
P. Charalampopoulos, R. Kotak, J. Sollerman, C. P. Guti\'errez, M. Pursiainen, T. L. Killestein, S. Schulze, P. J. Pessi, K. Maeda, T. Kangas, Y. -Z. Cai, C. Fremling, K. R. Hinds, T. Jegou du Laz, E. Kankare, M. M. Kasliwal, H. Kuncarayakti, P. Lundqvist, F. J. Masci, S. Mattila, D. A. Perley, A. Reguitti, T. M. Reynolds, M. Stritzinger, L. Tartaglia, J. …

Luminous, rapidly declining supernovae as stripped transitional objects in low metallicity environments: the case of SN 2022lxg
We present an analysis of the optical and near-infrared properties of SN 2022lxg, a bright ($\rm M_{g\, \mathrm{peak}}=-19.41$ mag) and rapidly evolving SN. It was discovered within a day of explosion, and rose to peak brightness in 10 d. Two distinct phases of circumstellar interaction are evident in the data. The first is marked by a steep blue continuum (T $>15,000$ K) with flash-ionisation features due to hydrogen and He II. The second, weaker phase is marked by a change in the colour evolu…

Submillimeter and Mid-Infrared Variability of Young Stellar Objects in the M17 HII Region
Zhiwei Chen, Doug Johnstone, Carlos Contreras Pe\~na, Jeong-Eun Lee, Sheng-Yuan Liu, Gregory Herczeg, Steve Mairs, Geumsook Park, Kee-Tae Kim, Mi-Ryang Kim, Keping Qiu, Yao-Te Wang, Xu Zhang, Megan Reiter, the JCMT Transient Team
https://ar…

Submillimeter and Mid-Infrared Variability of Young Stellar Objects in the M17 HII Region
We conducted a comprehensive analysis of young stellar object (YSO) variability at submillimeter and mid-infrared (mid-IR) wavelengths for the M\,17 \ion{H}{2} region, using 3.5 years monitoring data from the JCMT Transient Survey at $450$ and $850\,μ$m and 9 years mid-IR monitoring data from the NEOWISE mission. Our study encompasses observations of 198 and 164 bright submillimeter peaks identified within the deep JCMT coadded maps at 450 and $850\,μ$m, and 66 YSOs seen by NEOWISE W2 that we…

Analysis of Forbidden Neon Emission lines in HAeBe Stars using Spitzer IRS spectra
D. Akhila, Blesson Mathew, S. Nidhi, B. Shridharan, R. Arun, Hema Anilkumar, G. Maheswar, Sreeja S. Kartha, P. Manoj, Suman Bhattacharyya
https://arxiv.org/abs/2506.01036

Analysis of Forbidden Neon Emission lines in HAeBe Stars using Spitzer IRS spectra
We analyzed high-resolution mid-infrared spectra of 78 well-known Herbig Ae/Be (HAeBe) stars using Spitzer InfraRed Spectrograph data, focusing on the detection of [Ne {\sc II}] and [Ne {\sc III}] emission lines as indicators of ionized outflows or disk winds. Emission from [Ne {\sc II}] at 12.81 $μ$m or [Ne {\sc III}] at 15.55 $μ$m was identified in 25 sources, constituting the largest sample of HAeBe stars with these detected lines. Our analysis revealed a higher detection frequency of [Ne …

ALMA millimetre-wavelength imaging of HD 138965: New constraints on the debris dust composition and presence of planetary companions
J. P. Marshall, S. Hengst, A. Trejo-Cruz, C. del Burgo, J. Milli, M. Booth, J. C. Augereau, E. Choquet, F. Y. Morales, P. Th\'ebault, F. Kemper, V. Faramaz-Gorka, G. Bryden
https://arxiv.org/ab…

ALMA millimetre-wavelength imaging of HD 138965: New constraints on the debris dust composition and presence of planetary companions
HD 138965 is a young A type star and member of the nearby young Argus association. This star is surrounded by a broad, bright debris disc with two temperature components that was spatially resolved at far-infrared wavelengths by Herschel. Here we present ALMA millimetre-wavelength imaging of the cool outer belt. These reveal its radial extent to be $150^{+10}_{-7}$ au with a width ($σ$) of 49$^{+7}_{-6}$ au ($ΔR/R$ = 0.77), at a moderate inclination of 49$\fdeg$9^{+3.3}_{-3.7}$. Due to the li…

Reconfigurable Ultrafast Thermal Metamaterial Pixel Arrays by Dual-Gate Graphene Transistors
Yibai Zhong, Xiu Liu, Zexiao Wang, Tianyi Huang, Jingyi Zou, Sen Lin, Xiao Luo, Zhuo Li, Rui Cheng, Xu Zhang, Sheng Shen
https://arxiv.org/abs/2506.04372

Reconfigurable Ultrafast Thermal Metamaterial Pixel Arrays by Dual-Gate Graphene Transistors
Thermal signatures represent ubiquitous infrared appearances of objects, carrying their unique spectral fingerprints. Despite extensive efforts to decipher and manipulate thermal-infrared signals, the ability to fully control them across spatial, temporal and spectral domains remains a significant challenge due to the slow speed, diffuse and broadband emitting nature of thermal emission in most materials. Here, we demonstrate a reconfigurable ultrafast thermal metamaterial pixel array that inte…

This https://arxiv.org/abs/2504.14009 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Large Cold Dust Reservoir Revealed in Transitional SN Ib 2014C by James Webb Space Telescope Mid-Infrared Spectroscopy
Supernova (SN) 2014C is a rare transitional event that exploded as a hydrogen-poor, helium-rich Type Ib SN and subsequently interacted with a hydrogen-rich circumstellar medium (CSM) a few months post-explosion. This unique interacting object provides an opportunity to probe the mass-loss history of a stripped-envelope SN progenitor. Using the James Webb Space Telescope (JWST), we observed SN 2014C with the Mid-Infrared Instrument Medium Resolution Spectrometer at 3477 days post-explosion (rest…

This https://arxiv.org/abs/2505.23632 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Integrated thin film lithium niobate mid-infrared modulator
The mid-infrared spectral range holds great promise for applications such as molecular spectroscopy and telecommunications. Many key molecules exhibit strong absorption features in this range, and free-space optical communication benefits from reduced atmospheric attenuation and low transmission losses in specific wavelength bands spanning from 3 to 14 μm. Recent progress in MIR photonics has been fuelled by the rapid development of efficient light sources and detectors. However, further advan…

Direct visualization of visible-light hyperbolic plasmon polaritons in real space and time
Atreyie Ghosh, Calvin Raab, Joseph L. Spellberg, Aishani Mohan, Sarah B. King
https://arxiv.org/abs/2506.13719

Direct visualization of visible-light hyperbolic plasmon polaritons in real space and time
Hyperbolic materials support exotic polaritons with hyperbolic dispersion that enable subdiffraction focusing and enhanced light-matter interactions. Visible-frequency hyperbolic plasmon polaritons (HPPs) offer significant advantages over hyperbolic phonon polaritons, which operate in the infrared frequency range - namely lower losses and greater technological relevance. However, these HPPs remained experimentally inaccessible until the recent identification of molybdenum(IV) oxychloride (MoOCl…

Interstellar Polarization Survey. V. Galactic magnetic field tomography in the spiral arms using optical and near-infrared starlight polarization
Y. Angarita (Department of Astrophysics/IMAPP, Radboud University, Nijmegen, The Netherlands, Department of Space, Earth & Environment, Chalmers University of Technology, 412 93 Gothenburg, Sweden), M. J. F. Versteeg (Department of Astrophysics/IMAPP, Radboud University, Nijmegen, The Netherlands), M. Haverkorn (Department of Astrophysics…

Interstellar Polarization Survey. V. Galactic magnetic field tomography in the spiral arms using optical and near-infrared starlight polarization
Interstellar linear polarization occurs when starlight passes through elongated dust grains aligned by interstellar magnetic fields. The observed polarization can come from different dust structures along the line of sight (LOS). By combining polarization measurements with stellar distances, we can study the plane-of-sky Galactic magnetic field (GMF) between the observer and the star and separate the contributions of clouds with different GMF properties. We used optical and near-infrared (NIR) …

The Evolutionary Path of Star-Forming Clumps in Hi-GAL
Ylenia Maruccia, Stefano Cavuoti, Massimo Brescia, Giuseppe Riccio, Sergio Molinari, Davide Elia, Eugenio Schisano
https://arxiv.org/abs/2506.08905

The Evolutionary Path of Star-Forming Clumps in Hi-GAL
Star formation (SF) studies are benefiting from the huge amount of data made available by recent large-area Galactic plane surveys conducted between 2 μm and 3 mm. Fully characterizing SF demands integrating far-infrared/sub-millimetre (FIR/sub-mm) data, tracing the earliest phases, with near-/mid-infrared (NIR/MIR) observations, revealing later stages characterized by YSOs just before main sequence star appearance. However, the resulting dataset is often a complex mix of heterogeneous and int…

The Second and Third Data Releases from the UKIRT Hemisphere Survey
Adam C. Schneider, Frederick J. Vrba, Justice Bruursema, Jeffrey A. Munn, Mike Irwin, Mike Read, Watson Varricatt, Tom Kerr, Klaus Hodapp, Simon Dye, Stephen J. Williams, Andrew T. Cenko, Trudy M. Tilleman, Marc A. Murison, Barry Rothberg, Scott Dahm, Bryan Dorland, Andy Lawrence, Kenneth C. Chambers

The Second and Third Data Releases from the UKIRT Hemisphere Survey
This paper describes the second and third data releases (DR2 and DR3, respectively) from the ongoing United Kingdom Infrared Telescope (UKIRT) Hemisphere Survey (UHS). DR2 is primarily comprised of the $K$-band portion of the UHS survey, and was released to the public on June 1, 2023. DR3 mainly includes the $H$-band portion of the survey, with a public release scheduled for September 2025. The $H$- and $K$-band data releases complement the previous $J$-band data release (DR1) from 2018. The su…

Hydroxylated Mg-rich amorphous silicates as catalysts for molecular hydrogen formation in the interstellar medium
V. Mennella, T. Suhasaria, B. Kerkeni, G. Ouerfelli
https://arxiv.org/abs/2506.11596

Hydroxylated Mg-rich amorphous silicates as catalysts for molecular hydrogen formation in the interstellar medium
We present results from an experimental study on the interaction of atomic deuterium with Mg-rich amorphous enstatite and forsterite type silicates. Infrared spectroscopy was used to examine the process. During D atom exposure, deuteroxyl group formation was observed. The cross section for OD group formation, estimated from the OD stretching band intensity with D atom fluence, is 4.2.10^{-18} cm^2 for both silicates. HD (D2) molecules form via D atom abstraction of chemisorbed H(D) atoms from O…