Tootfinder

MEGATRON: Reproducing the Diversity of High-Redshift Galaxy Spectra with Cosmological Radiation Hydrodynamics Simulations
Harley Katz, Martin P. Rey, Corentin Cadiou, Oscar Agertz, Jeremy Blaizot, Alex J. Cameron, Nicholas Choustikov, Julien Devriendt, Uliana Hauk, Gareth C. Jones, Taysun Kimm, Isaac Laseter, Sergio Martin-Alvarez, Kosei Matsumoto, Autumn Pearce, Francisco Rodr\'iguez Montero, Joki Rosdahl, Mahsa Sanati, Aayush Saxena, Adrianne Slyz, Richard Stiskalek, Anatole Stor…

MEGATRON: Reproducing the Diversity of High-Redshift Galaxy Spectra with Cosmological Radiation Hydrodynamics Simulations
We present the MEGATRON suite of cosmological radiation hydrodynamics simulations following the formation of Milky Way-mass galaxies from the earliest cosmic epochs when Population III stars form to Cosmic Noon. The suite represents the first set of cosmological simulations that couples a vast non-equilibrium thermochemistry network of primordial species, metals, and molecules to multifrequency, on-the-fly radiation transport, allowing us to directly predict the spectral properties of early gal…

Hot springs and dust reservoirs: JWST reveals the dusty, molecular aftermath of extragalactic stellar mergers
Viraj Karambelkar, Mansi Kasliwal, Ryan M. Lau, Jacob E. Jencson, Nadejda Blagorodnova, Marco A. Gomez-Munoz, Hugo Tranin, Maxime Wavasseur, Melissa Shahbandeh, Kishalay De
https://arxiv.org/abs/2508.03932

Hot springs and dust reservoirs: JWST reveals the dusty, molecular aftermath of extragalactic stellar mergers
We present James Webb Space Telescope (JWST) observations of four Luminous Red Novae (LRNe): dusty, extragalactic transients from stellar mergers following common-envelope evolution (CEE) in massive binary stars. Our targets - AT2021blu, AT2021biy, AT2018bwo, and M31-LRN-2015 - span a broad range in progenitor primary masses ($\approx$3-24M$_{\odot}$) and post-merger ages ($\approx$1100-3700 days). All four were observed with the Mid-Infrared Instrument (MIRI) from 5-25$μ$m; AT2021blu and AT20…

Whisker-based Tactile Flight for Tiny Drones
Chaoxiang Ye, Guido de Croon, Salua Hamaza
https://arxiv.org/abs/2510.03119 https://arxiv.org/pdf/2510.03119…

Whisker-based Tactile Flight for Tiny Drones
Tiny flying robots hold great potential for search-and-rescue, safety inspections, and environmental monitoring, but their small size limits conventional sensing-especially with poor-lighting, smoke, dust or reflective obstacles. Inspired by nature, we propose a lightweight, 3.2-gram, whisker-based tactile sensing apparatus for tiny drones, enabling them to navigate and explore through gentle physical interaction. Just as rats and moles use whiskers to perceive surroundings, our system equips d…

Micah Parsons' 2025 Contract Extension Issue https://insidethestar.com/micah-parsons-2025-contract-extension-issue

Two-dimensional Yang-Mills theory via integrable probability
Thibaut Lemoine (IRMA)
https://arxiv.org/abs/2508.16162 https://arxiv.org/pdf/2508.16162

Two-dimensional Yang-Mills theory via integrable probability
In this paper, we review the construction and large $N$ study of the continuous two-dimensional Yang-Mills theory with gauge group $\mathrm{U}(N)$ through probability, combinatorics and representation theory. In a first part, we define the continuous Yang-Mills measure using Markovian holonomy fields, following a construction by L{é}vy, then we show in a second part how to derive Migdal's character expansion of the partition function for any compact structure group from this setting. We contin…

I was feeling pretty drained last night and wasn't sure if I should bike to work today. My knee was really bugging me going up steps (more than usual) and I decided I would wait til morning to decide, based on how I felt.
I felt totally fine this morning. Reset! I think it's because I walked nearly 5 miles yesterday, and also spent a lot of time on the floor fixing a laser cutter.

Supporting Intervention Design for Suicide Prevention with Language Model Assistants
Jaspreet Ranjit, Hyundong J. Cho, Claire J. Smerdon, Yoonsoo Nam, Myles Phung, Jonathan May, John R. Blosnich, Swabha Swayamdipta
https://arxiv.org/abs/2508.18541

Supporting Intervention Design for Suicide Prevention with Language Model Assistants
Warning: This paper discusses topics of suicide and suicidal ideation, which may be distressing to some readers. The National Violent Death Reporting System (NVDRS) documents information about suicides in the United States, including free text narratives (e.g., circumstances surrounding a suicide). In a demanding public health data pipeline, annotators manually extract structured information from death investigation records following extensive guidelines developed painstakingly by experts. In…

Experimental Insights from OpenAirInterface 5G positioning Testbeds: Challenges and solutions
Mohsen Ahadi, Adeel Malik, Omid Esrafilian, Florian Kaltenberger, Cedric Thienot
https://arxiv.org/abs/2508.19736

Experimental Insights from OpenAirInterface 5G positioning Testbeds: Challenges and solutions
5G New Radio (NR) is a key enabler of accurate positioning in smart cities and smart factories. This paper presents the experimental results from three 5G positioning testbeds running open-source OpenAirInterface (OAI) gNB and Core Network (CN), using Uplink Time Difference of Arrival (UL-TDoA) with the newly integrated Location Management Function (LMF). The testbeds are deployed across both indoor factories and outdoor scenarios with O-RAN Radio Units (RUs), following a 3GPP-compliant system …

Comment on 'Gauge networks in noncommutative geometry'
Carlos I. Perez-Sanchez
https://arxiv.org/abs/2508.17338 https://arxiv.org/pdf/2508.17338

Comment on 'Gauge networks in noncommutative geometry'
The article (Gauge networks in noncommutative geometry, J. Geom. Phys. 75 : 71--91, 2014) that motivates this comment provides, in particular, one answer to the following natural question: what is noncommutative geometry on a lattice? In the context of spectral triples, Marcolli and van Suijlekom define in op. cit. a Dirac operator on the lattice and identify the corresponding Spectral Action with the lattice Yang-Mills--Higgs system. In this comment we show that the continuum limit of this the…

Two wildfires are burning at or near the North Rim, known
as the White Sage Fire
and the Dragon Bravo Fire.
The latter is the one that destroyed the lodge and other structures.
The park initially was managing it as a controlled burn
but then shifted to suppression as it rapidly grew to 7.8 square miles (20 square kilometers) because of hot temperatures,
low humidity and wind, fire officials said.
No injuries have been reported.
Millions of peo…

A historic Grand Canyon lodge has been destroyed by wildfire, park official says
The Grand Canyon Lodge, the only lodging inside the park at the North Rim, was consumed by the flames, park Superintendent Ed Keable told park residents, staff and others in a meeting Sunday morning. He said the visitor center, the gas station, a waste water treatment plant, an administrative building and some employee housing were among the 50 to 80 structures lost.