Tootfinder

Dense gas tracers in and between spiral arms: from Giant Molecular Filaments to star-forming clumps
O. Feher, S. E. Ragan, F. D. Priestley, P. C. Clark
https://arxiv.org/abs/2505.24711

Dense gas tracers in and between spiral arms: from Giant Molecular Filaments to star-forming clumps
Giant Molecular Filaments are opportune locations in our Galaxy to study the star-forming interstellar matter and its accumulation on spatial scales comparable to those now becoming available for external galaxies. We mapped the emission of HCN(1$-$0), HCO$^+$(1$-$0), and N$_2$H$^+$(1$-$0) towards two of these filaments, one associated with the Sagittarius arm and one with an interarm area. Using the data alongside the COHRS $^{12}$CO(3$-$2), the CHIMPS $^{13}$CO(3$-$2), and $\textit{Herschel}$…

Active Filaments on Curved Surfaces: From Single Filaments to Dilute Suspensions
Giulia Janzen, Euan D. Mackay, Rastko Sknepnek, D. A. Matoz-Fernandez
https://arxiv.org/abs/2507.23616

Active Filaments on Curved Surfaces: From Single Filaments to Dilute Suspensions
Curvature plays a central organizational role in active polymer dynamics. Using large-scale Langevin-dynamics simulations, we study active semiflexible filaments confined to smooth curved surfaces and map how curvature, bending rigidity, and activity interact. We find geodesic alignment, curvature lensing, and curvature-induced trapping. In particular, regions of negative Gaussian curvature localize filaments and hinder global surface exploration. These results show how surface geometry can be …

Termination-Dependent Resistive Switching in SrTiO$_3$ Valence Change Memory Cells
Marko Mladenovi\'c, Manasa Kaniselvan, Christoph Weilenmann, Alexandros Emboras, Mathieu Luisier
https://arxiv.org/abs/2507.00318

Termination-Dependent Resistive Switching in SrTiO$_3$ Valence Change Memory Cells
Valence change memory (VCM) cells based on SrTiO$_3$ (STO), a perovskite oxide, are a promising type of emerging memory device. While the operational principle of most VCM cells relies on the growth and dissolution of one or multiple conductive filaments, those based on STO are known to exhibit a distinctive, 'interface-type' switching, which is associated with the modulation of the Schottky barrier at their active electrode. Still, a detailed picture of the processes that lead to interface-typ…

Time-resolved and three-dimensional elucidation of the complex refractive index alteration induced by ultrashort laser pulses
Takumi Koike, Yusuke Ito, Naohiko Sugita
https://arxiv.org/abs/2506.22582

Time-resolved and three-dimensional elucidation of the complex refractive index alteration induced by ultrashort laser pulses
Ultrashort pulse lasers (USPLs) have attracted attention as tools capable of inducing unique phenomena by instantaneously generating regions with transiently modified properties (filaments) in the material. However, a comprehensive understanding of USPL-induced filaments remains elusive due to the complexity of their dynamics and insufficient imaging techniques to accurately capture them. In this study, we propose a novel methodology to measure the transient complex refractive index of filament…

A Melody in the Noise: Modeling Echoes of the Crab Nebula
Thierry Serafin Nadeau, Marten H. van Kerkwijk
https://arxiv.org/abs/2507.23214 https://arxiv.org…

A Melody in the Noise: Modeling Echoes of the Crab Nebula
Pulses from the Crab pulsar are often followed by ``echoes'', produced by radiation that was deflected by small filamentary structures in the Crab nebula and thus traveled via longer paths. We describe a simplified but detailed model that treats the filaments as cylinders of dense, neutral material with a thin ionized skin. In this picture, echoes are produced when the line of sight crosses the skin at glancing incidence, which naturally leads to the large electron column density gradients requ…

Falling Threads During Solar Filament Eruptions
Yidian Wu, Rui Liu, Runbin Luo, Wensi Wang
https://arxiv.org/abs/2505.22020 https://a…

Falling Threads During Solar Filament Eruptions
Mass drainage is frequently observed in solar filaments. During filament eruptions, falling material most likely flows along magnetic field lines, which may provide important clues for the magnetic structures of filaments. Here we study three filament eruptions exhibiting significant mass draining, often manifested as falling threads at a constant speed ranging between 30--300 km/s. We found that most of the falling material lands onto the hooked segments of flare ribbons, only a small fraction…

Gliding microtubules exhibit tunable collective rotation driven by chiral active forces
Madhuvanthi Guruprasad Athani, Nathan Prouse, Niranjan Sarpangala, Patrick Noerr, Guillaume Schiano-Lomoriello, Ankush Gargeshwari Kumar, Fereshteh L. Memarian, Jeremie Gaillard, Laurent Blanchoin, Linda S. Hirst, Kinjal Dasbiswas, Ajay Gopinathan, Ond\v{r}ej Ku\v{c}era, Daniel A. Beller

Gliding microtubules exhibit tunable collective rotation driven by chiral active forces
How chirality propagates across scales remains an open question in many biological and synthetic systems. An especially clear manifestation of this propagation is found in in vitro gliding assays of cytoskeletal filaments on surfaces, driven by molecular motors. These assays have become model systems of active matter dynamics, as they spontaneously organize into diverse dynamical states, including collective motions with chiral rotation. However, the microscopic mechanisms underlying these chir…

Properties of the cores and filaments in the Ophiuchus molecular cloud and its L1688 hub-filament system
Bo-Sheng Jia, Guo-Yin Zhang, Alexander Menshchikov, Sami Dib, Jin-Zeng Li, Ke Wang, Di Li, Xue-Mei Li, Zhi-Yuan Ren, Chang Zhang, Nageen Pervaiz, Lin Xiao
https://arxiv.org/abs/2506.20619…

Properties of the cores and filaments in the Ophiuchus molecular cloud and its L1688 hub-filament system
Analyzing filaments and cores in molecular clouds is key to understanding galactic star formation and its environmental dependence. This paper studies the properties and distribution of dense cores and filaments in the Ophiuchus molecular cloud, with a focus on the L1688 hub-filament system (HFS) and its star formation potential. We extracted sources and filaments from Herschel images and a 13.5 arcsec resolution surface density map using the getsf method, identified prestellar cores among the …

Thin filaments in Hele-Shaw cells
Nitay Ben-Shachar, Michael C. Dallaston, Scott W. McCue
https://arxiv.org/abs/2507.13507 https://ar…

Thin filaments in Hele-Shaw cells
Using a recently derived filament model, the stability of fluid filaments in Hele-Shaw cells, driven by a constant pressure gradient, is studied. It is found that thin circular filaments grow if their initial radius exceeds a dimensionless critical radius. Further, linear stability of the axisymmetric solution reveals that all modes are stable for twice this critical radius, with modes becoming unstable for larger radii. A translating circular solution is found for asymptotically large radius, …

A parallel algorithm for the computation of the Jones polynomial
Kasturi Barkataki, Eleni Panagiotou
https://arxiv.org/abs/2505.23101 https://

A parallel algorithm for the computation of the Jones polynomial
Knots, links and entangled filaments appear in many physical systems of interest in biology and engineering. Classifying knots and measuring entanglement is of interest both for advancing knot theory, as well as for analyzing large data that become available through experiments or Artificial Intelligence. In this context, the efficient computation of topological invariants and other metrics of entanglement becomes an urgent issue. The computation of common measures of topological complexity, su…

Tracing Missing Baryons in the Cosmic Filaments with tSZ and CMB-Lensing Stacking
Jianzhuo Li, Yi Zheng, Weishan Zhu
https://arxiv.org/abs/2507.08561 https…

Tracing Missing Baryons in the Cosmic Filaments with tSZ and CMB-Lensing Stacking
We investigate the distribution of missing baryons in cosmic filaments by stacking approximately 31,300 filaments across the northern and southern SDSS sky regions using Planck Compton-$y$ and CMB lensing maps. Filaments are identified using the DisPerSE algorithm applied to the SDSS LOWZ-CMASS galaxy samples, selecting structures with lengths between 30-100 cMpc and redshifts in the range $0.2 < z < 0.6$. Radial profiles are extracted out to 25 cMpc from the filament spines, and galaxy cluster…

Nucleation feedback can drive establishment and maintenance of biased microtubule polarity in neurites
Hannah G. Scanlon, Gibarni Mahata, Anna C. Nelson, Scott A. McKinley, Melissa M. Rolls, Maria-Veronica Ciocanel
https://arxiv.org/abs/2506.12209

Nucleation feedback can drive establishment and maintenance of biased microtubule polarity in neurites
The microtubule cytoskeleton is comprised of dynamic, polarized filaments that facilitate transport within the cell. Polarized microtubule arrays are key to facilitating cargo transport in long cells such as neurons. Microtubules also undergo dynamic instability, where the plus and minus ends of the filaments switch between growth and shrinking phases, leading to frequent microtubule turnover. Although microtubules often completely disassemble and new filaments nucleate, microtubule arrays have…

Filamentation of the electromagnetic precursor in relativistic quasi-perpendicular electron-positron shocks
Emanuele Sobacchi, Yuri Lyubarsky, Lorenzo Sironi, Masanori Iwamoto
https://arxiv.org/abs/2507.22561

Filamentation of the electromagnetic precursor in relativistic quasi-perpendicular electron-positron shocks
We present a scenario that could explain non-thermal particle acceleration in relativistic quasi-perpendicular electron-positron shocks, such as the termination shock of pulsar wind nebulae. The shock produces a strong electromagnetic precursor that propagates into the upstream plasma, which is initially threaded by a uniform background magnetic field. We show that the filamentation instability breaks the precursor into radiation filaments parallel to the shock normal. The transverse scale of t…

Origin of the ~150 kpc radio filament in galaxy ESO 137-006
Toushif Alam, Kunal P. Mooley, Kartick C. Sarkar
https://arxiv.org/abs/2507.23026 https://arxiv…

Origin of the ~150 kpc radio filament in galaxy ESO 137-006
Sensitive wide-field radio surveys have started uncovering many filamentary structures associated with the jets and lobes of radio galaxies, radio relics in galaxy clusters, and tailed galaxies. Although limited theoretical investigations on the origin of the filamentary structures have associated these filaments with astrophysical shocks and interactions with intracluster magneto-ionic media, more quantitative studies are needed to ascertain their precise nature and origin. Recent MeerKAT obse…

The mechanics of disclination emergence in 3D active nematics
Yingyou Ma, Christopher Amey, Aparna Baskaran, Michael F. Hagan
https://arxiv.org/abs/2506.22785

The mechanics of disclination emergence in 3D active nematics
The spontaneous creation of disclinations is a defining characteristic of active nematics, which is rarely observed in equilibrium systems or other active matter systems. Thus, understanding the mechanics of disclinations is crucial for developing reliable continuum theories and practical applications. In this work, we explore this intrinsic mechanics by performing large-scale 3D simulations of a particle-based model of active semiflexible filaments. We investigate the effects of filament stiff…

CFD Modelling and Sensitivity-Guided Design of Silicon Filament CVD Reactors
G. P. Gakis, G. Loacham\'in-Suntaxi, I. G. Aviziotis, E. D. Koronaki, P. P. Filippatos, G. Chatzigiannakis, S. P. A. Bordas, D. Davazoglou, A. G. Boudouvis
https://arxiv.org/abs/2506.18889

CFD Modelling and Sensitivity-Guided Design of Silicon Filament CVD Reactors
Filament-based chemical vapor deposition (CVD) for silicon (Si) coatings is often treated as a straightforward adaptation of planar deposition, just with a cylindrical substrate. But this overlooks a fundamental shift in how transport phenomena and reaction kinetics interact. In filament CVD, the filament is not just a substrate; it is the dominant heat source and flow disruptor all in one. In this work, we ask: What really governs Si film growth on filaments? Using a validated three-dimensiona…

3D fast-mode Wave Propagation from Corona to Chromosphere: Triggering Mechanism for 3D Oscillations of filaments
Yunxue Huang, Qin Feng, Yuhu Miao, Zhining Qu, Ke Yu, Hongfei Liang, Yu Liu, Xinping Zhou
https://arxiv.org/abs/2507.14837

3D fast-mode Wave Propagation from Corona to Chromosphere: Triggering Mechanism for 3D Oscillations of filaments
Moreton waves are widely regarded as the chromospheric counterpart of extreme ultraviolet (EUV) waves propagating in the corona. However, direct observational evidence confirming their simultaneous propagation across multiple atmospheric layers from the corona through the transition region to the chromosphere has been lacking. In this study, we present comprehensive observational evidence of a three-dimensional (3D) fast-mode wave propagating from the corona through the transition region into t…

Detection of pure warm-hot intergalactic medium emission from a $7.2$ Mpc long filament in the Shapley supercluster using X-ray spectroscopy
Konstantinos Migkas, Florian Pacaud, Toni Tuominen, Nabila Aghanim
https://arxiv.org/abs/2506.14917

Detection of pure warm-hot intergalactic medium emission from a $7.2$ Mpc long filament in the Shapley supercluster using X-ray spectroscopy
A significant fraction of the local Universe's baryonic content remains undetected. Cosmological simulations indicate that most of the missing baryons reside in cosmic filaments in the form of warm-hot intergalactic medium (WHIM). The latter shows low surface brightness and soft X-ray emission, making it challenging to detect. Until now, X-ray WHIM emission has been detected only in very few individual filaments, whereas in even fewer filaments, WHIM has been spectroscopically analyzed. In this…

Collective filament wrapping and nested spiral formation in active polydisperse systems
Caterina Landi, Giulia Janzen, Francesco Sciortino, John Russo, Chantal Valeriani, Daniel A. Matoz-Fernandez
https://arxiv.org/abs/2507.20969

Collective filament wrapping and nested spiral formation in active polydisperse systems
We investigate a two-dimensional polydisperse suspension of self-propelled semiflexible filaments and reveal a collective wrapping mechanism that is absent in monodisperse systems. At intermediate activity levels, long filaments coil around shorter ones, forming nested spiral structures stabilized by filament length disparity. These assemblies generalize the single-filament spiraling seen in active systems into cooperative, multi-filament configurations. As activity increases, the nested spiral…

Elastohydrodynamics of 3D chemically active filaments
Matthew D Butler, Benjamin J Walker, Thomas Montenegro-Johnson, Panayiota Katsamba
https://arxiv.org/abs/2507.03586

Elastohydrodynamics of 3D chemically active filaments
Active deformable filaments exhibit a large range of qualitatively different three-dimensional dynamics, depending on their flexibility, the strength of the active forcing, and the surrounding environment. For a sufficiently strong activity, the resulting forces buckle the filament into different shapes, altering its dynamic behaviour. We investigate the dynamic behaviour of elastic, chemically propelled phoretic filaments, combining two existing models; a local version of slender phoretic theo…

A Neutron Sensitive Detector Using 3D-Printed Scintillators
Adam Barr, Cinzia da Vi\`a, Mosst Tasnim Binte Shawkat, Stephen Watts, John Allison, Gabriele D'Amen
https://arxiv.org/abs/2507.08663

A Neutron Sensitive Detector Using 3D-Printed Scintillators
This work reports on the performance of a novel neutron-sensitive scintillating detector fabricated using Fused-Deposition Modelling (FDM) additive manufacturing. FDM is a cost-effective 3D-printing method employing flexible plastic filaments to create custom-shaped components. Scintillating filaments, based on polystyrene doped with \emph{p}-terphenyl and 1,4-bis (5-phenyloxazol-2-yl) benzene, and enriched with $^6$LiF to enable neutron sensitivity were manufactured in house and achieved visib…

Cosmic filaments confirm unexplained cooling of CMB photons in two independent redshift ranges
Juan Ignacio Dom\'inguez Feldman, Luis A. Pereyra, Frode K. Hansen, Facundo Toscano, Diego Garcia Lambas
https://arxiv.org/abs/2506.08833

Cosmic filaments confirm unexplained cooling of CMB photons in two independent redshift ranges
Recent papers have reported an unexplained cooling of CMB photons passing through galaxies in nearby cosmic filaments $z<0.02$ at the $>5σ$ level. Here we show for the first time that this effect is also present at higher redshifts $0.02

Linear stability of an oceanic front at finite Rossby number
Subhajit Kar, Roy Barkan, John R. Taylor
https://arxiv.org/abs/2507.13304 https://

Linear stability of an oceanic front at finite Rossby number
Submesoscale currents in the ocean's mixed layer (ML), consisting of fronts, eddies, and filaments, are characterized by order one Rossby (Ro) and Richardson (Ri) numbers. These currents play a crucial role in mediating vertical exchange between the surface and ocean interior and in facilitating cross-scale energy transfers. Despite a growing understanding of their generation mechanisms and energy pathways, two fundamental questions remain unresolved - how does a finite Ro modify the dynamics o…

The Observations of Magnetic Reconnection During the Interaction Process of Two Active Region Filaments
Zongyin Wu, Zhike Xue, Xiaoli Yan, Jincheng Wang, Liheng Yang, Zhe Xu, Qiaoling Li, Yang Peng, Liping Yang, Yian Zhou, Xinsheng Zhang, Liufan Gong, Qifan Dong, Guotang Wu
https://arxiv.org/abs/2506.05659

The Observations of Magnetic Reconnection During the Interaction Process of Two Active Region Filaments
We investigate the interaction between two filaments (F1 and F2) and their subsequent magnetic reconnection in active region (AR) NOAA 13296 and AR NOAA 13293 on May 9, 2023, utilizing high spatial and temporal resolution and multi-wavelength observational data from the Solar Dynamics Observatory, the New Vacuum Solar Telescope, and the Chinese Hα Solar Explorer. The movement of F1 from the southeast toward the northwest, driven by the motion of the positive magnetic polarity (P1), leads to a …

Galaxy quenching across the Cosmic Web: disentangling mass and environment with SDSS DR18
Anindita Nandi, Biswajit Pandey
https://arxiv.org/abs/2507.18614 https://

Galaxy quenching across the Cosmic Web: disentangling mass and environment with SDSS DR18
We investigate the influence of large-scale cosmic web environments on galaxy quenching using a volume-limited, stellar mass-matched galaxy sample from SDSS DR18. Galaxies are classified as residing in sheets, filaments, or clusters based on the eigenvalues of the tidal tensor derived from the smoothed density field. The quenched fraction increases with stellar mass and is highest in clusters, intermediate in filaments, and lowest in sheets, reflecting the increasing efficiency of environmental…

First critical field in the pinned three dimensional Ginzburg-Landau model of superconductivity
Mat\'ias D\'iaz-Vera, Carlos Rom\'an
https://arxiv.org/abs/2507.10915

First critical field in the pinned three dimensional Ginzburg-Landau model of superconductivity
We study extreme type-II superconductors described by the three dimensional magnetic Ginzburg-Landau functional incorporating a pinning term $a_\varepsilon(x)$, which we assume to be a bounded measurable function satisfying $b\leq a_\varepsilon(x)\leq 1$ for some constant $b>0$. A hallmark of such materials is the formation of vortex filaments, which emerge when the applied magnetic field exceeds the first critical field $H_{c_1}$. In this work, we provide a lower bound for this critical field …

Emergent Softening and Stiffening Dictate Transport of Active Filaments
Bipul Biswas, Prasanna More, Hima Nagamanasa Kandula
https://arxiv.org/abs/2507.08535

Emergent Softening and Stiffening Dictate Transport of Active Filaments
Active semiflexible filaments are crucial in various biophysical processes, yet insights into their single-filament behavior have predominantly relied on theory and simulations, owing to the scarcity of controllable synthetic systems. Here, we present an experimental platform of active semiflexible filaments composed of dielectric colloidal particles, activated by an alternating electric field that induces contractile or extensile electrohydrodynamic (EHD) flows. Our experiments reveal that con…

On the width and profiles of cosmic filaments
Qi-Rui Yang, Weishan Zhu, GuangYao Yu, Jian-Feng Mo, Yi Zheng, Long-Long Feng
https://arxiv.org/abs/2507.02476

On the width and profiles of cosmic filaments
We investigated the widths and profiles of cosmic filaments using the IllustrisTNG simulations. Filaments were identified with DisPerSE, using galaxy samples in simulations as input. Since the width of an individual filament can vary significantly along its spine, we divided each filament into segments with lengths between $1.5\,h^{-1}\,\mathrm{Mpc}$ and $2.5\,h^{-1}\,\mathrm{Mpc}$ and measure their properties. The typical width of these filament segments increases gradually from approximately …

Counter-Streaming Velocities in a Quiescent Filament
Garima Karki, Brigitte Schmieder, Pascal Demoulin, Pooja Devi, Ramesh Chandra, Reetika Joshi
https://arxiv.org/abs/2506.18115 …

Counter-Streaming Velocities in a Quiescent Filament
Filaments/prominences are cold plasma (~ 10000 K) embedded in the solar corona, two orders of magnitude hotter. Filament plasma is structured by the magnetic field in thin elongated threads. Counter-streaming flows have been observed. The aim of this paper is to characterize these flows. For that, we use high spatial resolution observations of spectral data obtained with THEMIS in H-alpha and with IRIS in Mg II k lines on 29 September 2023. We best detect counter-streaming flows in both the blu…

Orientation of galaxy spins relative to filaments of the large-scale structure of the Universe
A. V. Antipova, D. I. Makarov, N. Libeskind, E. Tempel
https://arxiv.org/abs/2507.07334

Orientation of galaxy spins relative to filaments of the large-scale structure of the Universe
The theory of galaxy formation posits a clear correlation between the spin of galaxies and the orientation of the elements of the large-scale structure of the Universe, particularly cosmic filaments. A substantial number of observational and modelling studies have been undertaken with the aim of identifying the dependence of spin orientation on the components of the large-scale structure. However, the findings of these studies remain contradictory. In this paper, we present an analysis of the o…

Galaxy And Mass Assembly (GAMA): from filaments to voids, how extreme environment affects gas metallicity and SFR in galaxies
J. A. Molina-Calzada, M. A. Lara-L\'opez, J. Gallego, A. M. Hopkins, Benne W. Holwerda, A. R. L\'opez-S\'anchez
https://arxiv.org/abs/2507.06781

Galaxy And Mass Assembly (GAMA): from filaments to voids, how extreme environment affects gas metallicity and SFR in galaxies
We analyse the stellar mass-metallicity (M-Z) and stellar mass-star formation rate (M-SFR) relations for star-forming galaxies classified by their environment and compare them with matched control samples of field galaxies. Using data from the Galaxy And Mass Assembly (GAMA) survey and the filament catalogue, which categorises galaxies into filaments, tendrils, and voids, we correct emission lines for dust extinction and select star-forming galaxies based on the BPT diagram. Metallicity and sta…

Stochastic size control of self-assembled filaments
Maximilian C. H\"ubl, Carl P. Goodrich
https://arxiv.org/abs/2507.04985 https://

Stochastic size control of self-assembled filaments
Controlling the size and shape of assembled structures is a fundamental challenge in self-assembly, and is highly relevant in material design and biology. Here, we show that specific, but promiscuous, short-range binding interactions make it possible to economically assemble linear filaments of user-defined length. Our approach leads to independent control over the mean and width of the filament size distribution and allows us to smoothly explore design trade-offs between assembly quality (spre…

Acceleration of Lagrangian Particles in Shell Models of Turbulence
Lorenzo Piro, Massimo Cencini, Roberto Benzi
https://arxiv.org/abs/2506.09633 https://…

Acceleration of Lagrangian Particles in Shell Models of Turbulence
Lagrangian acceleration has been investigated both experimentally and numerically in the past, and it has been shown to exhibit extreme fluctuations, which have been rationalized as events in which tracer particles get trapped into vortical structures such as vortex tubes or filaments. Here, we consider the statistics of acceleration within the multifractal framework, as in Biferale et al. Phys. Rev. Lett. 93 064502 (2004), and investigate the statistics of Lagrangian acceleration using shell m…

Unveiling the small-scale web around galaxies with miniJPAS and DESI: the role of local connectivity in star formation
Daniela Gal\'arraga-Espinosa, Guinevere Kauffmann, Silvia Bonoli, Luisa Lucie-Smith, Rosa M. Gonz\'alez Delgado, Elmo Tempel, Raul Abramo, Siddharta Gurung-L\'opez, Valerio Marra, Jailson Alcaniz, Narciso Benitez, Saulo Carneiro, Javier Cenarro, David Crist\'obal-Hornillos, Renato Dupke, Alessandro Ederoclite, Antonio Hern\'an-Caballero, Carlos Hern…

Unveiling the small-scale web around galaxies with miniJPAS and DESI: the role of local connectivity in star formation
We present the first statistical observational study detecting small-scale filaments in the immediate surroundings of galaxies, i.e. the local web of galaxies. Simulations predict that cold gas, the fuel for star formation, is channeled through filamentary structures into galaxies. Yet, direct observational evidence for this process has been limited by the challenge of mapping the cosmic web at small scales. Using miniJPAS spectro-photometric data combined with spectroscopic DESI redshifts when…

This https://arxiv.org/abs/2407.16876 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Associations Between Scattering Screens and Interstellar Medium Filaments
Pulsar scintillation can be used to measure small scale structure in the Galaxy, but little is known about the specific interstellar medium features that cause scintillation. We searched for interstellar medium counterparts to all scintillation screens for which absolute distances and scattering orientations have been measured - a sample of 12 pulsars and 22 screens. For one pulsar, PSR J0737-3039A, we re-analyze its scintillation screen and find evidence for a highly anisotropic screen. Among …

B-fields And dust in interstelLar fiLAments using Dust POLarization (BALLAD-POL): IV. Grain alignment mechanisms in Cocoon Nebula (IC 5146) using polarization observations from JCMT/POL-2
Saikhom Pravash, Thiem Hoang, Archana Soam, Eun Jung Chung, Pham Ngoc Diep, Nguyen Bich Ngoc, Le Ngoc Tram
https://arxiv.org/abs/2507.07205

B-fields And dust in interstelLar fiLAments using Dust POLarization (BALLAD-POL): IV. Grain alignment mechanisms in Cocoon Nebula (IC 5146) using polarization observations from JCMT/POL-2
The polarization of starlight and thermal dust emission from aligned non-spherical grains provides a powerful tool for tracing magnetic field morphologies and strengths in diffuse interstellar medium to star-forming regions, and constraining dust grain properties and their alignment mechanisms. However, the physics of grain alignment is not yet fully understood. The alignment based on RAdiative Torques (RATs), known as RAT Alignment or RAT-A mechanism is the most acceptable mechanism. In this w…

Magnetic properties of orphan penumbrae
J. S. Castellanos Dur\'an, B. L\"optien, A. Korpi-Lagg, S. K. Solanki, M. van Noort
https://arxiv.org/abs/2507.08117

Magnetic properties of orphan penumbrae
Orphan penumbrae (OPU) are features resembling sunspot penumbrae, but are not connected to an umbra. Here we compare OPUs and sunspot penumbrae, including their filaments. We also identify and describe the main mechanisms for the formation of OPUs and we characterise their decay process. Our study is based on spectropolarimetric inversions of active regions observed with the Hinode spectropolarimeter. We manually identified 80 individual OPUs, allowing us to study them statistically. In additio…

High-resolution APEX/LAsMA $^{12}$CO and $^{13}$CO (3-2) observation of the G333 giant molecular cloud complex : III. Decomposition of molecular clouds into multi-scale hub-filament structures
J. W. Zhou, J. S. Urquhart, F. Wyrowski, S. Neupane, T. Liu, M. Juvela
https://arxiv.org/abs/2506.16664

High-resolution APEX/LAsMA $^{12}$CO and $^{13}$CO (3-2) observation of the G333 giant molecular cloud complex : III. Decomposition of molecular clouds into multi-scale hub-filament structures
We decomposed the G333 complex and the G331 giant molecular cloud into multi-scale hub-filament systems (HFs) using the high-resolution $^{13}$CO (3$-$2) data from LAsMA observations. We employed the filfinder algorithm to identify and characterize filaments within HFs. Compared with non-HFs, HFs have significantly higher density contrast, larger masses and lower virial ratios. Velocity gradient measurements around intensity peaks provide evidence of gas inflow within these structures. There ma…

Apparent motion of penumbral grains in a sunspot simulation
Michal Sobotka, Markus Schmassmann
https://arxiv.org/abs/2506.09504 https://

Apparent motion of penumbral grains in a sunspot simulation
Context. The bright heads of penumbral filaments, penumbral grains (PGs), are manifestations of hot plasma flows rising to the surface. They are observed to move horizontally toward the sunspot umbra or away from it. Recent analyses of observations indicate that the direction of this motion is related to the inclination of the surrounding magnetic field. Aims. The penumbra of a sunspot simulated by the radiative magnetohydrodynamic code MURaM is analysed to get typical physical conditions in PG…

This https://arxiv.org/abs/2407.16059 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Near-inertial echoes of ageostrophic instability in submesoscale filaments
Ocean submesoscales, flows with characteristic size around 10 m - 10 km, are transitional between the larger, rotationally-constrained mesoscale and three-dimensional turbulence. In this paper we present simulations of a submesoscale ocean filament. In our case, the filament is strongly sheared in both vertical and cross-filament directions and is unstable. Instability indeed dominates the early behaviour with a fast extraction of kinetic energy from the vertically sheared thermal wind. However…

This https://arxiv.org/abs/2502.10897 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Network of velocity-coherent filaments formed by supersonic turbulence in a very-high-velocity HI cloud
The warm neutral medium (WNM) was thought to be subsonically/transonically turbulent, and it lacks a network of intertwined filaments that are commonly seen in both molecular clouds and cold neutral medium (CNM). Here, we report HI~21 cm line observations of a very-high-velocity (-330 km s$^{-1}$ $

Evidence for a sign change of the ISW effect in the very recent universe: hot voids and cold overdensities at $z<0.03$
Frode K. Hansen, Diego Garcia Lambas, Andr\'es N. Ruiz, Facundo Toscano, Luis A. Pereyra
https://arxiv.org/abs/2506.08832

Evidence for a sign change of the ISW effect in the very recent universe: hot voids and cold overdensities at $z<0.03$
We find that CMB photons passing through local voids ($z<0.03$) are hotter than expected at the $2.7-3.6σ$ level. Combined with earlier findings showing a $>5σ$ cooling of CMB photons in galactic filaments in the same redshift range, we now have possible evidence for a negative Integrated Sachs-Wolfe (ISW) effect in the very recent universe. In addition to having opposite sign, the observed amplitude is an order of magnitude larger than the predicted Rees-Sciama and ISW effects for the nearby…

This https://arxiv.org/abs/2403.00909 has been replaced.
link: https://scholar.google.com/scholar?q=a

Atacama Large Aperture Submillimeter Telescope (AtLAST) Science: Resolving the Hot and Ionized Universe through the Sunyaev-Zeldovich effect
An omnipresent feature of the multi-phase ``cosmic web'' is that warm/hot (>$10^5$ K) ionized gas pervades it. This gas constitutes a relevant contribution to the overall universal matter budget across multiple scales, from the several tens of Mpc-scale IGM filaments, to the Mpc ICM, all the way down to the CGM surrounding individual galaxies from ~1 kpc up to their respective virial radii (~100 kpc). The study of the hot baryonic component of cosmic matter density represents a powerful means f…

Galaxies at the edges: a complete census of MACS J0416.1-2403 cluster
Rossella Ragusa, Maurizio D'Addona, Amata Mercurio, Marcella Longhetti, Marisa Girardi, Marianna Annunziatella, Nicolas Estrada, Claudio Grillo, Angela Iovino, Giula Rodighiero, Piero Rosati, Benedetta Vulcani, Giuseppe Angora, Hans Bohringer, Massimo Brescia, Gabriel Bartosch Caminha, Gayoung Chon, Fedor Getman, Aniello Grado, Marco Gullieuszik, Luca Limatola, Alessia Moretti, Luisa Pecoraro

Galaxies at the edges: a complete census of MACS J0416.1-2403 cluster
Numerous studies have established that the environment influences the physical properties of a galaxy. While gas inflows supply the fuel for SF, high density and temperature conditions suppress SF activity through various quenching processes. Investigations into large scale structures, such as filaments and overdense regions in the cluster outskirts, have focused on the low z. To move to intermediate z and explore galaxy pathways combined with environmental effects, it is crucial to join wide f…