Tootfinder

Watching more of the first two Alien: Earth episodes. In the first few minutes of the first episode, it really has that same feel of some of the original flicks. Didn't know Timothy Olyphant was in it!
The promo art for it is rad 😂
#AlienEarth #horror

🌠 Ryugu asteroid research reveals mineral history predating any on Earth
#astronomy

Ryugu asteroid research reveals mineral history predating any on Earth
In 2020, the Hayabusa2 uncrewed spacecraft successfully returned small fragments from the near-Earth asteroid Ryugu, providing the first pristine samples from a carbonaceous asteroid. Grains from those samples were studied at the National Synchrotron Light Source II (NSLS-II), revealing new details into the asteroid's composition and origin. This insight could ultimately help answer big questions about how water and organic matter came to exist on early Earth, forming the building blocks of lif…

First post of our vacation in the #schwarzwald . Already on the way to our stay, we made a stop to visit the Laichinger Tiefenhöhle cave!
https://www.franzgraf.de/blog…

Discovering Laichingen’s Shaft Cave on our way to the Black Forest
On our trip to Baiersbronn in the Black Forest, we broke up the long drive with a fascinating stop at Tiefenhöhle Laichingen. This unique shaft cave, Germany’s deepest show cave, offered an unforgettable descent beneath the earth through narrow passages and steep stairs before we continued to begin

Federal funding is about to run out for 19 active #NASA space missions studying Earth's climate, exploring the Solar System, and probing mysteries of the Universe: https://arstechnica.com/space/2025/09/scientists-its-do-or-die-time-for-americas-primacy-exploring-the-solar-system/ - this year's budget expires at the end of this month, and Congress must act before October 1 to avert a government shutdown; if Congress passes a budget before then, it will most likely be in the form of a continuing resolution, an extension of this year's funding levels into the first few weeks or months of fiscal year 2026.

Strict limits on potential secondary atmospheres on the temperate rocky exo-Earth TRAPPIST-1 d
Caroline Piaulet-Ghorayeb, Bj\"orn Benneke, Martin Turbet, Keavin Moore, Pierre-Alexis Roy, Olivia Lim, Ren\'e Doyon, Thomas J. Fauchez, Lo\"ic Albert, Michael Radica, Louis-Philippe Coulombe, David Lafreni\`ere, Nicolas B. Cowan, Danika Belzile, Kamrul Musfirat, Mehramat Kaur, Alexandrine L'Heureux, Doug Johnstone, Ryan J. MacDonald, Romain Allart, Lisa Dang, Lisa Kaltenegg…

Strict limits on potential secondary atmospheres on the temperate rocky exo-Earth TRAPPIST-1 d
The nearby TRAPPIST-1 system, with its seven small rocky planets orbiting a late-type M8 star, offers an unprecedented opportunity to search for secondary atmospheres on temperate terrestrial worlds. In particular, the 0.8 Earth-radii planet TRAPPIST-1 d lies at the edge of the habitable zone (equilibrium temperature ~262 K). Here we present the first 0.6-5.2 micron NIRSpec/PRISM transmission spectrum of TRAPPIST-1 d from two transits with JWST. We find that stellar contamination from unocculte…

First images of Antares photosphere from spectropolarimetry
Quentin Pilate, Eric Josselin, Agn\`es L\`ebre, Arturo L\'opez Ariste, Philippe Mathias, Alexis Lavail
https://arxiv.org/abs/2507.08614

First images of Antares photosphere from spectropolarimetry
Antares is the closest red supergiant (RSG) to Earth. The discovery of linear polarization in the atomic lines of the star opens the path to produce direct images of the photosphere, hence probing the dynamics at the surface. We analyze this linear polarization signals following the same scheme as has been previously done for the RSG Betelgeuse, and find that they are comparable in all its details. This allows us to use the same models for the analysis of these polarization signals in both star…

Just published as a podcast episode another of the Kingston Efficient Homes Show small talks, on Alan F's first year with solar PV:
https://www.earth.org.uk/KEHS-2025-talk-Solar-One-Year-On.html

KEHS talk: Our Solar PV System One Year On (2025)
Kingston Efficient Homes Show 2025 small talk by Alan FH.

Computational algorithm for downward continuation of gravity anomalies
D. K. Ivanov, L. N. Temirbekova, P. N. Vabishchevich
https://arxiv.org/abs/2507.08506

Computational algorithm for downward continuation of gravity anomalies
The downward continuation of potential fields from the Earth's surface into the subsurface is a critical task in gravity exploration, as it helps to identify the sources of gravity anomalies. This problem is often addressed by solving a first-kind integral equation using regularization techniques to stabilize an inherently unstable process. A similar approach is used in our work, where the continued field is represented as the potential of a simple layer or its vertical derivative. The constanc…

So sad. The first #glacier I saw in 2018, during our honeymoon.
Indeed at a time they were telling us the glacier wasn’t really impacted by climate change, I had not truly understood why.
Such a majestic and unique place to visit.

Earth Overshoot Day Reaches Record for Earliest Date #society

Earth Overshoot Day Reaches Record for Earliest Date
For 2025, Earth Overshoot Day fell on July 24, the earliest it has been since the event was first calculated in 2006.

I first read "Mother Earth, Mother Board" by Neal Stephenson around 15 years ago. It included a visit to the Telegraph Museum (now PK Porthcurno Museum of Global Communications) at Porthcurno in Cornwall, and I finally got to go there. One of the things that Stephenson describes is a collection of faulty cables. And its still on display.

Just published as a podcast episode another of the Kingston Efficient Homes Show small talks, on Alan F's first year with solar PV:
https://www.earth.org.uk/KEHS-2025-talk-Solar-One-Year-On.html

KEHS talk: Our Solar PV System One Year On (2025)
Kingston Efficient Homes Show 2025 small talk by Alan FH.

Wow, this is freaky: https://www.rnz.co.nz/news/national/567527/first-video-of-earth-s-surface-lurching-sideways-in-earthquake-offers-new-insights video of lateral 'slip' in Myanmar quake from earlier …

First release of LiteBIRD simulations from an end-to-end pipeline
M. Bortolami, N. Raffuzzi, L. Pagano, G. Puglisi, A. Anand, A. J. Banday, P. Campeti, G. Galloni, A. I. Lonappan, M. Monelli, M. Tomasi, G. Weymann-Despres, D. Adak, E. Allys, J. Aumont, R. Aurvik, C. Baccigalupi, M. Ballardini, R. B. Barreiro, N. Bartolo, S. Basak, M. Bersanelli, A. Besnard, T. Brinckmann, E. Calabrese, E. Carinos, A. Carones, F. J. Casas, K. Cheung, M. Citran, L. Clermont, F. Columbro, G. Coppi, A. Cop…

First release of LiteBIRD simulations from an end-to-end pipeline
The LiteBIRD satellite mission aims at detecting Cosmic Microwave Background $B$ modes with unprecedented precision, targeting a total error on the tensor-to-scalar ratio $r$ of $δr \sim 0.001$. Operating from the L2 Lagrangian point of the Sun-Earth system, LiteBIRD will survey the full sky across 15 frequency bands (34 to 448 GHz) for 3 years.The current LiteBIRD baseline configuration employs 4508 detectors sampling at 19.1 Hz to achieve an effective polarization sensitivity of $ 2 μ\mathr…

The 300 TeV photon from GRB 221009A: a Hint at Non-linear Lorentz Invariance Violation?
Dmitry D. Ofengeim, Tsvi Piran
https://arxiv.org/abs/2508.07153 https://

The 300 TeV photon from GRB 221009A: a Hint at Non-linear Lorentz Invariance Violation?
The air shower array Carpet-3 detected a 300 TeV photon from the direction of GRB 221009A at 4536 s after the Fermi-GBM trigger for this event. If the association with this gamma-ray burst is real, it poses two puzzles. First, why was this photon not absorbed by the extragalactic background light? ``New physics'' beyond the Standard Model is required to explain how it managed to reach Earth from a cosmological distance. Second, why was this photon detected when the VHE afterglow observed by LHA…

"Wind, solar, and batteries are cheap. They are the fastest and most cost effective way to bring on new power generation [batteries: generation??]. However they are not cheaper than the great mass of incumbent capacity."
Paywalled so I've only read the first paras.
https://www.coldeye.earth/p/next-steps

Next Steps
Monday 4 August 2025

I always find the use of first person plural pronouns in discussions of the distant future to be too cute…
Humans didn’t exist a million years ago. There were some crafty hominid apes but not the sort you could clean up and mistake for a human.
There is no “us” 7 billion years from now. There is very likely no “us” in half a million years. We may or may not have descendants but they won’t be “us” in any sense.
A billion years is longer than Earth has had visible life

State Department Spokesperson Tammy Bruce has sparked condemnation
after a reporter unearthed an interview in which she said
the U.S. is the best country on Earth
“next to Israel,”
in yet another show of U.S. leaders’ capitulation to Israel
under a president who ran on the slogan “America First.”

Rubio Spokesperson Says US Is “Greatest Country on Earth Next to Israel”
The official said it’s her responsibility to ensure “every person on this planet” recognizes the importance of Israel.

Series B, Episode 09 - Countdown
AVON: Approximately six million. It was colonized in the last century of the Old Calendar. At first they resisted political affiliation, but then they joined the Federation, and they have remained unswervingly loyal.
VILA: Then they're not likely to welcome us with open arms.
https://

Blakes7Bot | Search
Companion site to the Blakes7Bot Twitter, Mastodon, and Bluesky accounts. Automated lines of Blakes 7 dialog. Includes a script search facility.

#Birdlife.org has published the #AviList, meaning that for the first time ever, we have a unified global checklist of the species of #birds found on planet Earth.

AviList unites the world’s bird species
The publication of AviList means that for the first time ever, we have a unified global checklist of the species of bird found on planet Earth.

Observation of momentum dependent charge density wave gap in EuTe4
Iftakhar Bin Elius, Nathan Valadez, Gyanendra Dhakal, Volodymyr Buturlim, Sabin Regmi, Dante James, Peter Radanovich, Matthew Yankowitz, Tetiana Romanova, Andrzej Ptok, Krzysztof Gofryk, Dariusz Kaczorowski, Madhab Neupane
https://arxiv.org/abs/2508.06464

Observation of momentum dependent charge density wave gap in EuTe4
The occurrence of charge density wave (CDW) phenomena, particularly in low dimensional rare-earth chalcogenides, has attracted substantial research interest. Among these materials, EuTe4, which features multiple Te layers and a single Eu-Te layer, serves as a promising platform to study the interplay between CDW order and 4f electron configurations, including magnetism. In this study, First principles based density functional theory (DFT) calculations were carried out to investigate the electro…

Here's how (the first partiality of) yesterday's Total #LunarEclipse looked from the #ISS: #refraction.

XRISM observations of solar flare X-ray emission reflected in the Earth's atmosphere
Hiromasa Suzuki, Jun Kurashima, Koji Mori, Satoru Katsuda, Shun Inoue, Daiki Ishi, Eugene M. Churazov, Rashid A. Sunyaev, Ildar Khabibullin, Tsunefumi Mizuno, Caroline Kilbourne, Yuichiro Ezoe, Hiroshi Nakajima, Kosuke Sato, Eric Miller, Kyoko Matsushita
https://

XRISM observations of solar flare X-ray emission reflected in the Earth's atmosphere
The X-ray Imaging and Spectroscopy Mission (XRISM), launched into low-Earth orbit in 2023, observes the reflection of solar flare X-rays in the Earth's atmosphere as a by-product of celestial observations. Using a $\sim$one-year data set covering from October 2023 to November 2024, we report on our first results of the measurement of the metal abundance pattern and high-resolution Fe-K spectroscopy. The abundances of Mg, Si, S, Ar, Ca, and Fe measured with the CCD detector Xtend during M- and X…

Implementation of Prototype Permanent Microundulators
Eyal Magory, Vladimir L. Bratman, Ahiya Steiner, Nezah Balal
https://arxiv.org/abs/2509.06186 https://

Implementation of Prototype Permanent Microundulators
We report the implementation of two types of helical microundulators with a 6 mm period, built from axially magnetized helices fabricated from a single piece of rare-earth magnet. The first device, composed of two oppositely magnetized longitudinal helices, produces a transverse on-axis field exceeding 0.93 T. The second, a hybrid design with two oppositely longitudinally pre-magnetized rare-earth helices alternating with two unmagnetized steel helices, reaches about 1.5 T on axis. Both devices…

the movement of the earth's axis was noticed by the sumerians over six thousand years ago, when they observed the star canopus culminating directly above the horizon, on the southern meridian, for the first time in their oldest and southernmost city eridu. for several decades, canopus wasn't visible in the neighboring northeast town of ur, and therefore, it was called the "star of the city of eridu" in sumerian.

Toward Alternative Earths' Habitability of Solar System Bodies at Earth's Orbit
Mohammed Abdel Razak
https://arxiv.org/abs/2509.06259 https://arxiv…

Toward Alternative Earths' Habitability of Solar System Bodies at Earth's Orbit
This paper presents the first structured evaluation of Solar System bodies hypothetically relocated to Earth orbit (1 AU) to assess their potential as alternative habitats. Using comparative criteria, planetary size and gravity, atmospheric retention, volatile accessibility, weather system potential, soil development feasibility, and orbital transfer cost. We find that most bodies are unsuitable. Mercury and the Moon lack volatiles and atmospheres, while gas and ice giants offer no solid surfac…

Numerical Investigation of Wave Scattering in Granular Media: Grain-Scale Inversion and the Role of Boundary Effects
Ning Liu, Wen-Tao Hu
https://arxiv.org/abs/2507.07455

Numerical Investigation of Wave Scattering in Granular Media: Grain-Scale Inversion and the Role of Boundary Effects
Seismic coda waves, once regarded as noise, are now recognized as key indicators of wave scattering in seismograms. Aki (1969) first proposed that these waves result from small-scale heterogeneities in the Earth's interior, spurring research into their interpretation and applications. Coda waves are now known to carry valuable information about subsurface heterogeneity, making the study of scattering essential for understanding complex geological structures. Wave scattering in unconsolidated …

Data-driven high-throughput search for the accelerated discovery of rare-earth-free permanent magnets
Junaid Jami, Nitish Bhagat, Amrita Bhattacharya
https://arxiv.org/abs/2507.01849

Data-driven high-throughput search for the accelerated discovery of rare-earth-free permanent magnets
An integrated data-driven approach combined with a high-throughput framework based on first-principles calculations was used to discover novel rare-earth-free permanent magnets, focusing on binary alloys. Compounds were screened systematically based on their elemental composition, structure, stability, and magnetization. Density functional theory (DFT) calculations were performed on the selected candidates to evaluate their magnetocrystalline anisotropy energy (MAE) and Curie temperature (Tc), …

GeoArena: An Open Platform for Benchmarking Large Vision-language Models on WorldWide Image Geolocalization
Pengyue Jia, Yingyi Zhang, Xiangyu Zhao, Yixuan Li
https://arxiv.org/abs/2509.04334

GeoArena: An Open Platform for Benchmarking Large Vision-language Models on WorldWide Image Geolocalization
Image geolocalization aims to predict the geographic location of images captured anywhere on Earth, but its global nature presents significant challenges. Current evaluation methodologies suffer from two major limitations. First, data leakage: advanced approaches often rely on large vision-language models (LVLMs) to predict image locations, yet these models are frequently pretrained on the test datasets, compromising the accuracy of evaluating a model's actual geolocalization capability. Second…

EarthLink: Interpreting Climate Signals with Self-Evolving AI Agents
Zijie Guo, Jiong Wang, Xiaoyu Yue, Wangxu Wei, Zhe Jiang, Wanghan Xu, Ben Fei, Wenlong Zhang, Xinyu Gu, Lijing Cheng, Jing-Jia Luo, Chao Li, Yaqiang Wang, Tao Chen, Wanli Ouyang, Fenghua Ling, Lei Bai
https://arxiv.org/abs/2507.17311

EarthLink: Interpreting Climate Signals with Self-Evolving AI Agents
Modern Earth science is at an inflection point. The vast, fragmented, and complex nature of Earth system data, coupled with increasingly sophisticated analytical demands, creates a significant bottleneck for rapid scientific discovery. Here we introduce EarthLink, the first AI agent designed as an interactive copilot for Earth scientists. It automates the end-to-end research workflow, from planning and code generation to multi-scenario analysis. Unlike static diagnostic tools, EarthLink can lea…

NASA and ESA scientists are monitoring
💥asteroid 2024 YR4,
initially feared to pose a threat to Earth,
but now projected to have a small chance of impacting the #Moon by 2031
—potentially offering a rare opportunity to observe a lunar impact and test planetary defense strategies.
First detected by the
"Asteroid Terrestrial-impact Last Alert System" (ATLAS) in Hawaii…

2024 YR4
When discovered, asteroid 2024 YR4 appeared to have a small chance of impacting Earth on Dec. 22, 2032. Experts now think it poses no significant risk to Earth.

Are Local Group Dwarf Spheroidal Galaxies the First Safe Planet-hosting Environments?
Stefano Ciabattini, Stefania Salvadori, Leonardo Testi
https://arxiv.org/abs/2509.01669 htt…

Are Local Group Dwarf Spheroidal Galaxies the First Safe Planet-hosting Environments?
We explore whether Local Group dwarf spheroidal (dSph) galaxies might have hosted Earth-like planets dwelling unexposed for several billions of years to major galactic threats to life, such as supernovae and gamma-ray bursts. To this aim, we developed a novel semiempirical model that exploits the observed chemical abundances and star formation histories of a selected sample of local dSphs, to explore whether their stars may have (i) reached the minimum metallicity to trigger planet formation an…

E.M. Bounds: Weapon of Prayer:
>The Christian man must in all things, first of all, be conformed to the will of God, but nowhere shall this royal devotion be more evident than in the salvation of the race of men. This high partnership with God, as His vicegerents on earth, is to have its fullest, richest, and most efficient exercise in prayer for all men.

🫨 Scientists capture slow-motion earthquake in action
#earth

Scientists capture slow-motion earthquake in action
Scientists for the first time have detected a slow slip earthquake in motion during the act of releasing tectonic pressure on a major fault zone at the bottom of the ocean.

Exploration of vertical self-resonant bifurcations from DRO in the Earth-Moon CR3BP
Cengiz Aydin
https://arxiv.org/abs/2508.17286 https://arxiv.org/pdf/250…

Exploration of vertical self-resonant bifurcations from DRO in the Earth-Moon CR3BP
The purpose of this paper is to investigate vertical self-resonant (VSR) bifurcations from distant retrograde orbit (DRO) family in the framework of the Earth-Moon CR3BP. To this end, by using a classical corrector-predictor algorithm we compute the vertical stability of DROs and identify twelve vertical-critical DROs. We split them into three groups according to orbiting around libration points $L_i$, $i=1,2,4,5$. (i) We first analyze six VSR bifurcations of multiplicity from five to ten assoc…

When Ecuadorians voted two years ago to block oil drilling in Yasuni National Park,
it was a triumph for environmentalists seeking to protect one of the most biodiverse places on Earth.
And it was in character for a country that was first to enshrine the “rights of nature” in its constitution
and is home to parts of the Amazon rain forest and the Galšpagos Islands.
❌ But recent moves by President Daniel Noboa have alarmed environmentalists and Indigenous leaders
…

Some in Ecuador worry about Noboa moves unwinding nation's green reputation
Recent moves in Ecuador have environmental interests concerned that the South American nation is unwinding some of the basis for its green reputation. President Daniel Noboa has eliminated the Environment Ministry as an independent institution, folding it into the Energy and Mines Ministry. Activists and Indigenous leaders say the move weakens protections for some of the world’s most biodiverse areas and paves the way for expanded oil and mining projects. They also warn that a proposed law os…

MTG-S1 and Sentinel-4 launch to change how we see our atmosphere: #MTGS1 satellite has been designed to generate a completely new type of data product, especially suited to nowcasting rapidly evolving storms, with three-dimensional views of the atmosphere, while Copernicus Sentinel-4, which consists of an instrument mounted on the MTG-S1 satellite, will be the first mission to monitor European air quality from geostationary orbit.

Tailoring hard magnetic properties of Fe2MnSn Heusler alloy via interstitial modification: A first-principles approach
Junaid Jami, Rohit Pathak, N. Venkataramani, K. G. Suresh, Amrita Bhattacharya
https://arxiv.org/abs/2507.01832

Tailoring hard magnetic properties of Fe2MnSn Heusler alloy via interstitial modification: A first-principles approach
We employ first-principles calculations to explore interstitial engineering as a strategy to tailor the hard magnetic properties of Fe2MnSn Heusler alloy, establishing its potential as a rare-earth-free permanent magnet. By introducing light interstitial elements -- B, C, H, N, O, and F -- at varying concentrations (1.56-12.5 at%), we uncover significant enhancements in structural stability, magnetization, Curie temperature, and magnetocrystalline anisotropy. These dopants preferentially occupy…

Compact All optical Reservoir Computing via Luminescence Dynamics in Rare-earth Ions-doped Nanocrystals
Junyan Chen, Jingsong Fu, Jie Xu, Yixiang Qin, Axin Du, Kaiyang Wang, Limin Jin, Can Huang
https://arxiv.org/abs/2508.16042

Compact All optical Reservoir Computing via Luminescence Dynamics in Rare-earth Ions-doped Nanocrystals
Optical neuromorphic computing offers a promising route to high speed, energy efficient information processing. However, photonic neurons, as the critical components for enhancing computational expressivity, still face significant bottlenecks in nonlinear mapping and memory capacity. Here, we demonstrate an all optical reservoir computing system based on rare earth ions doped nanocrystals for the first time, leveraging their intrinsic nonlinear luminescence dynamics and multitimescale memory. U…

An SBC-based controller and processor for the laboratory model of PRATUSH Digital Receiver
Srivani K. S., Girish B. S., Mayuri Sathyanarayana Rao, Saurabh Singh, Adarsh Kumar Dash, Narendra S., Yash Agrawal, Keerthipriya S., Somashekar R., Madhavi S., Jacob Rajan, Udaya Shankar N., Seetha S
https://arxiv.org/abs/2507.05655

An SBC-based controller and processor for the laboratory model of PRATUSH Digital Receiver
Probing ReionizATion of the Universe using Signal from Hydrogen (PRATUSH) is a proposed space-based radiometer that aims to detect the sky-averaged 21-cm signal from Cosmic Dawn - a crucial phase in the cosmic evolution of the Universe. PRATUSH will operate in the frequency range of 55-110 MHz. PRATUSH will conduct observations in low earth orbit in its first phase, followed by lunar orbit in the second phase. Digital correlation spectrometer is an integral subsystem of PRATUSH radiometer, enab…

100% certain
Time is long. https://flipboard.com/@cbcnews/edmonton-5aq1688az/-/a-NcdF2JhdRlC_YX7EJbMzIg:a:107108217-/0

What are the chances of Earth being hit by a big asteroid?
A week ago, the new Vera C. Rubin Observatory released its first images. It also included a video of all the asteroids it discovered. In just 10 …

Ocean Tides on Asynchronously Rotating Planets Orbiting Low-mass Stars
Jiaru Shi, Jun Yang, Dorian S. Abbot, Yonggang Liu, Wanying Kang, Yufeng Lin
https://arxiv.org/abs/2507.03850

Ocean Tides on Asynchronously Rotating Planets Orbiting Low-mass Stars
Planets in the liquid-water habitable zone of low-mass stars experience large tidal forces, $10^3$ to $10^4$ times those on Earth, due to the small distance between the habitable zone and the host stars. Therefore, interior solid tides, ocean tides and atmospheric tides on these planets could be much stronger than that on Earth, but rare work has been done to explicitly simulate the ocean tides. Here, for the first time, we perform global ocean tide simulations and show that ocean tides on asyn…

First we overheat
Then we cool off too quickly
Earth as a sauna.
#dailyhaikuprompt - cool off
#haiku
#poem

Scientists Make Breakthrough in Solving the Mystery of Life’s Origin https://www.404media.co/scientists-make-breakthrough-in-solving-the-mystery-of-lifes-origin/

From Cell Towers to Satellites: A 2040 Blueprint for Urban-Grade Direct-to-Device Mobile Networks
Sebastian Barros Elgueta
https://arxiv.org/abs/2507.14188

From Cell Towers to Satellites: A 2040 Blueprint for Urban-Grade Direct-to-Device Mobile Networks
In 2023, satellite and mobile networks crossed a historic threshold: standard smartphones, using unmodified 3GPP protocols, connected directly to low Earth orbit (LEO) satellites. This first wave of direct-to-device (D2D) demonstrations validated the physical feasibility of satellite-based mobile access. However, these systems remain fallback-grade--rural-only, bandwidth-limited, and fully dependent on Earth-based mobile cores for identity, session, and policy control. This paper asks a more am…

First principles study of [111]-oriented epitaxially strained Rare-Earth Nickelate NdNiO$_3$
Alexander Lione, Jorge \'I\~niguez-Gonz\'alez, Nicholas C. Bristowe
https://arxiv.org/abs/2507.20819

First principles study of [111]-oriented epitaxially strained Rare-Earth Nickelate NdNiO$_3$
Density functional theory is used to investigate the effect of biaxial strain on the structural, electronic and magnetic properties of [111]-oriented NdNiO$_3$, as a representative of the rare-earth perovskites that undergo metal-to-insulator transitions. We find that this constraint on the system induces unique structural phase transitions not previously observed under the well-studied bulk or [001]-oriented strained systems. We also report unique electronic behaviour, including amplification …

Spiking Neural Networks for SAR Interferometric Phase Unwrapping: A Theoretical Framework for Energy-Efficient Processing
Marc Bara
https://arxiv.org/abs/2506.20782

Spiking Neural Networks for SAR Interferometric Phase Unwrapping: A Theoretical Framework for Energy-Efficient Processing
We present the first theoretical framework for applying spiking neural networks (SNNs) to synthetic aperture radar (SAR) interferometric phase unwrapping. Despite extensive research in both domains, our comprehensive literature review confirms that SNNs have never been applied to phase unwrapping, representing a significant gap in current methodologies. As Earth observation data volumes continue to grow exponentially (with missions like NISAR expected to generate 100PB in two years) energy-effi…

Exploring ultra-high energy neutrino experiments through the lens of the transport equation
Stefano Palmisano, Diego Redigolo, Michele Tammaro, Andrea Tesi
https://arxiv.org/abs/2507.10665

Exploring ultra-high energy neutrino experiments through the lens of the transport equation
We develop a first-principles formalism, based on the transport equation in the line-of-sight approximation, to link the expected number of muons at neutrino telescopes to the flux of neutrinos at the Earth surface. We compute the distribution of muons inside Earth, arising from the up-scattering of neutrinos close to the detector, as well as from the decay of taus produced farther away. This framework allows one to account for systematic uncertainties, as well as to clarify the assumptions beh…

Observations of the fluctuations in Interplanetary Magnetic Field around L1 point during the solar transient events of 2024 with MAG payload onboard Aditya-L1 spacecraft
Vipin K. Yadav, R. K. Choudhary, M. Midhun Goutham
https://arxiv.org/abs/2509.03182

Observations of the fluctuations in Interplanetary Magnetic Field around L1 point during the solar transient events of 2024 with MAG payload onboard Aditya-L1 spacecraft
The MAG payload onboard India's first solar mission, Aditya-L1, is a dual-senssor fluxgate magnetometer designed to measure th interplanetary magnetic field (IMF) while operating in a halo orbit around the first Sun-Earth Lagrangian point (l1). Since becoming operational in January 2024, MAG has continuously recorded local magnetic field data and has captured several solar transient events over the past one year. During these events, the IMF, typically around 5 nT, exhibited significant enhance…

A Machine Learning Framework for Predicting Microphysical Properties of Ice Crystals from Cloud Particle Imagery
Joseph Ko, Jerry Harrington, Kara Sulia, Vanessa Przybylo, Marcus van Lier-Walqui, Kara Lamb
https://arxiv.org/abs/2507.19759

A Machine Learning Framework for Predicting Microphysical Properties of Ice Crystals from Cloud Particle Imagery
The microphysical properties of ice crystals are important because they significantly alter the radiative properties and spatiotemporal distributions of clouds, which in turn strongly affect Earth's climate. However, it is challenging to measure key properties of ice crystals, such as mass or morphological features. Here, we present a framework for predicting three-dimensional (3D) microphysical properties of ice crystals from in situ two-dimensional (2D) imagery. First, we computationally gene…

The Space Coronagraph Optical Bench (SCoOB): 7. design, fabrication, and first light for a self-coherent camera
Kevin Derby, Kian Milani, Grace C. Hathaway, Joshua Liberman, Kyle Van Gorkom, Ramya Anche, Adam Schilperoort, Corey Fucetola, Brandon Chalifoux, Kuravi Hewawasam, Christopher Mendillo, Sebastiaan Y. Haffert, Ewan S. Douglas
https://

The Space Coronagraph Optical Bench (SCoOB): 7. design, fabrication, and first light for a self-coherent camera
The 2020 Decadal Survey on Astronomy and Astrophysics tasked future space observatories with the goal of detecting and characterizing a large sample of Earth-like exoplanets. To achieve this, these observatories will require coronagraphs and wavefront control algorithms in order to achieve $10^{-10}$ or better starlight suppression. The Space Coronagraph Optical Bench (SCoOB) is a vacuum compatible testbed at the University of Arizona which aims to advance and mature starlight suppression techn…

Impact of electronic correlations on the superconductivity of high-pressure CeH9
Siyu Chen, Yao Wei, Bartomeu Monserrat, Jan M. Tomczak, Samuel Ponc\'e
https://arxiv.org/abs/2507.12506

Impact of electronic correlations on the superconductivity of high-pressure CeH9
Rare-earth superhydrides have attracted considerable attention because of their high critical superconducting temperature under extreme pressures. They are known to have localized valence electrons, implying strong electronic correlations. However, such many-body effects are rarely included in first-principles studies of rare-earth superhydrides because of the complexity of their high-pressure phases. In this work, we use a combined density functional theory and dynamical mean-field theory appr…

Shepherding Miorita and its flock: A group of near-Earth asteroids driven by apsidal and von Zeipel-Lidov-Kozai secular resonances. A source of low-perihelion asteroids
R. de la Fuente Marcos, C. de la Fuente Marcos, O. V\u{a}duvescu
https://arxiv.org/abs/2507.21251

Shepherding Miorita and its flock: A group of near-Earth asteroids driven by apsidal and von Zeipel-Lidov-Kozai secular resonances. A source of low-perihelion asteroids
Context. Secular resonances can control the dynamical evolution of near-Earth asteroids (NEAs) and, in some cases, lead to increased orbital stability. Asteroid 622577 Miorita (2014 LU14 ) was the first NEA found by the Isaac Newton Telescope (INT) and exhibits unusual dynamical traits although it approaches Venus, Earth, and Mars at relatively close range. Aims. Here, we investigate the orbital context of Miorita and search for possible dynamical analogs within the NEA population. Methods.…

Dark Matter Clumps as Sources of Gravitational-Wave Glitches in LIGO/Virgo/KAGRA data
Ezequiel Alvarez, Scott Perkins, Federico Ravanedo, Nicolas Yunes
https://arxiv.org/abs/2507.12227

Dark Matter Clumps as Sources of Gravitational-Wave Glitches in LIGO/Virgo/KAGRA data
We consider the hypothetical possibility that non-stationary glitch features in the noise of ground-based gravitational-wave detectors could be produced by small dark matter clumps that pass through the earth in the vicinity of gravitational-wave detectors. We first derive the gravitational-wave strain that would be generated by the passage of such a dark matter clump. We find that the strain is primarily sourced by the Newtonian gravitational acceleration of the mirrors toward the clump and by…

Mineral Detection of Neutrinos and Dark Matter 2025 Proceedings
Shigenobu Hirose, Patrick Stengel, Natsue Abe, Daniel Ang, Lorenzo Apollonio, Gabriela R. Araujo, Yoshihiro Asahara, Laura Baudis, Pranshu Bhaumik, Nathaniel Bowden, Joseph Bramante, Lorenzo Caccianiga, Mason Camp, Qing Chang, Jordan Chapman, Reza Ebadi, Alexey Elykov, Anna Erickson, Valentin Fondement, Katherine Freese, Shota Futamura, Claudio Galelli, Andrew Gilpin, Takeshi Hanyu, Noriko Hasebe, Adam A. Hecht, Samuel C. …

Mineral Detection of Neutrinos and Dark Matter 2025 Proceedings
The third ``Mineral Detection of Neutrinos and Dark Matter'' (MD$ν$DM'25) meeting was held May 20-23, 2025 in Yokohama, Japan, hosted by the Yokohama Institute for Earth Sciences, Japan Agency for Marine-Earth Science and Technology (JAMSTEC). These proceedings compile contributions from the workshop and update the progress of mineral detector research. MD$ν$DM'25 was the third such meeting, following the first in October of 2022 held at the IFPU in Trieste, Italy and the second in January of…

A Measurement of the Largest-scale #CMB E-mode Polarization with CLASS: https://iopscience.iop.org/article/10.3847/1538-4357/adc723 -> Small telescopes in Chile are first on Earth to cut through the cosmic noise, peering back more than 13 billion years to the universe's first light: https://hub.jhu.edu/2025/06/11/telescopes-look-at-cosmic-dawn/

Prospects of a New $L_5$ Trojan Flyby Target for the Lucy Mission
Luis E. Salazar Manzano, David W. Gerdes, Kevin J. Napier, Hsing Wen Lin, Fred C. Adams, Tessa Frincke, Simone Marchi, Keith S. Noll, John Spencer
https://arxiv.org/abs/2508.03687

Prospects of a New $L_5$ Trojan Flyby Target for the Lucy Mission
NASA's Lucy spacecraft is en route to conduct the first close encounter with Jupiter's Trojans. While most scheduled flybys lie in the $L_4$ cloud, the only $L_5$ target is the Patroclus-Menoetius binary. Since each flyby offers unique insights into target and population properties unattainable from Earth, we examine the feasibility of including an additional, yet unknown, $L_5$ target while minimizing the impact on Lucy's primary mission. We use the background $L_5$ Trojans brighter than the c…

Pressure dependence of liquid iron viscosity from machine-learning molecular dynamics
Kai Luo, Xuyang Long, R. E. Cohen
https://arxiv.org/abs/2506.21626 ht…

Pressure dependence of liquid iron viscosity from machine-learning molecular dynamics
We have developed a machine-learning potential that accurately models the behavior of iron under the conditions of Earth's core. By performing numerous nanosecond scale equilibrium molecular dynamics simulations, the viscosities of liquid iron for the whole outer core conditions are obtained with much less uncertainty. We find that the Einstein-Stokes relation is not accurate for outer core conditions. The viscosity is on the order of 10s \si{mPa.s}, in agreement with previous first-principles …

One year of ASPEX-SWIS operation -- Characteristic features, observations and science potential
Abhishek Kumar, Shivam Parashar, Prashant Kumar, Dibyendu Chakrabarty, Bhas Bapat, Aveek Sarkar, Manan S. Shah, Hiteshkumar L. Adalja, Arpit R. Patel, Pranav R. Adhyaru, M. Shanmugam, Swaroop B. Banerjee, K. P. Subramaniam, Tinkal Ladiya, Jacob Sebastian, Bijoy Dalal, Aakash Gupta, M. B. Dadhania, Santosh V. Vadawale, Shiv Kumar Goyal, Neeraj Kumar Tiwari, Aaditya Sarda, Sushil Kumar, Nishan…

One year of ASPEX-SWIS operation -- Characteristic features, observations and science potential
The Aditya-L1 mission, India's first dedicated solar observatory positioned at the first Lagrange point (L1) of the Sun-Earth system, carries the Solar Wind Ion Spectrometer (SWIS) as part of the ASPEX payload suite. Even before settling into its Halo orbit, SWIS has been providing nearly continuous in-situ measurements of solar wind ion spectra. Moments of the velocity distribution functions (VDFs) have been calculated to derive key solar wind parameters such as density, bulk speed, and temper…

Crosslisted article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- J-VAR: the northern variable sky in 7 filters -- First Data Release
A. Ederoclite, et al.

Generative AI models enable efficient and physically consistent sea-ice simulations
Tobias Sebastian Finn, Marc Bocquet, Pierre Rampal, Charlotte Durand, Flavia Porro, Alban Farchi, Alberto Carrassi
https://arxiv.org/abs/2508.14984

Generative AI models enable efficient and physically consistent sea-ice simulations
Sea ice is governed by highly complex, scale-invariant, and anisotropic processes that are challenging to represent in Earth system models. While advanced numerical models have improved our understanding of the sea-ice dynamics, their computational costs often limit their application in ensemble forecasting and climate simulations. Here, we introduce GenSIM, the first generative AI-based pan-Arctic model that predicts the evolution of all relevant key properties, including concentration, thickn…

Astrometric Accelerations of Provisional Targets for the Habitable Worlds Observatory
Katie E. Painter, Brendan P. Bowler, Kyle Franson, Juliette C. Becker, Jennifer A. Burt
https://arxiv.org/abs/2506.21768

Astrometric Accelerations of Provisional Targets for the Habitable Worlds Observatory
NASA's Habitable Worlds Observatory (HWO) will be the first space telescope capable of directly imaging Earth-like planets in the habitable zones of Sun-like stars to probe their atmospheres for signs of life. Now in its early stages of design, a list of the 164 most promising targets for HWO has been released to the community to carry out precursor science. Massive companions in these systems--stars, brown dwarfs, or giant planets--could preclude the existence of Earth-sized planets in the hab…

Frequency Standard Contributions to Limitations on the Signal-to-Noise Ratio in Very Long Baseline Interferometric (VLBI) Observations
Eric Burt, Todd Ely, Geoff Bower, Joe Lazio, Marin Anderson, Sonia Hernandez
https://arxiv.org/abs/2508.19123

Frequency Standard Contributions to Limitations on the Signal-to-Noise Ratio in Very Long Baseline Interferometric (VLBI) Observations
Since its observation in 2019, the first image of a super-massive black hole using Very Long Baseline Interferometry (VLBI) with an Earth-scale baseline has generated much scientific and public interest, including the possible extension of the baseline into space to obtain higher image resolution. Operating one or more VLBI nodes in space will require the use of frequency standards that are space qualified, greatly reducing the number of options available. The coherence function C(T) is the met…

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…

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…

Tunable optical emissions of Eu3 ions enabled by pressure-driven phase transition in ZnO
C. Ianhez-Pereira, U. F. Kaneko, A. D. Rodrigues, I. S. S. de Oliveira, M. P. F. de Godoy
https://arxiv.org/abs/2508.10953

Tunable optical emissions of Eu3+ ions enabled by pressure-driven phase transition in ZnO
Controlling the optical properties of rare-earth ions in wide-bandgap semiconductors remains a major challenge in the development of next-generation photonic materials. Here, we show that external hydrostatic pressure modulates the structural characteristics of ZnO thin films and, in turn, tunes the optical emission behavior of embedded Eu3+ ions. By combining in situ synchrotron X-ray diffraction and photoluminescence spectroscopy under high-pressure conditions with first-principles calculatio…

Dynamical Instability of Multi-planet Systems and Free-floating Planets
Ruocheng Zhai, Man Hoi Lee, Tianjun Gan, Shude Mao
https://arxiv.org/abs/2507.21216 https://

Dynamical Instability of Multi-planet Systems and Free-floating Planets
The ejection of planets by the instability of planetary systems is a potential source of free-floating planets. We numerically simulate multi-planet systems to study the evolution process, the properties of surviving systems, and the statistics of ejected planets. For systems with only super-Earth planets, we find that the time (in units of the orbital period $P_{1}$ of the innermost planet) for the system to lose the first planet by collision or ejection increases with the semimajor axis of th…

'Setting Fire to the Last Forest': Project West Ford and the Mobilization of the Astronomical Community 1958-1965
John C. Barentine
https://arxiv.org/abs/2507.14714

'Setting Fire to the Last Forest': Project West Ford and the Mobilization of the Astronomical Community 1958-1965
The dawning of the Space Age marked the start of an ongoing relationship between the professional astronomical community and both state and non-state actors that launch and operate spacecraft in near-Earth orbital space. While the Cold War heated up in the late 1950s, military uses of outer space quickly came into conflict with the priorities of astronomers then building ever-bigger ground-based telescopes and envisioning the first generation of space telescopes. As the threat of global thermon…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- First Detection of Molecular Activity in the Largest Known Oort Cloud Comet: ALMA Imaging of C/20...
Nathan X. Roth, et al.