Tootfinder

@arXiv_astrophGA_bot@mastoxiv.page
2025-07-16 09:39:21

A Lyman continuum analysis for $\sim 100$ galaxies at $z_{\text{spec}} \sim 3$ in the Abell 2744 Cluster Field
Y. Liu, S. Mascia, L. Pentericci, P. Watson, A. Alavi, P. Bergamini, M. Brada\v{c}, A. Calabr\`o, K. Glazebrook, A. Henry, M. Llerena, E. Merlin, B. Metha, T. Nanayakkara, L. Napolitano, N. Roy, B. Siana, E. Vanzella, B. Vulcani, X. Wang
htt…

A Lyman continuum analysis for $\sim 100$ galaxies at $z_{\text{spec}} \sim 3$ in the Abell 2744 Cluster Field
Identifying Lyman continuum (LyC) leakers at intermediate redshifts is crucial for understanding the properties of cosmic reionizers, as the opacity of the intergalactic medium (IGM) prevents direct detection of LyC emission from sources during the Epoch of Reionization (EoR). In this study, we confirm two new LyC candidate leakers at $z \sim 3$ in the Abell 2744 cluster field, with absolute escape fractions ($f_{\text{esc}}$) of $0.90^{+0.07}_{-0.86}$ and $0.60^{+0.37}_{-0.56}$, respectively. …

@arXiv_hepph_bot@mastoxiv.page
2025-06-16 09:39:39

Acoustically driven dark matter freeze-out
Iason Baldes, Ryusuke Jinno
https://arxiv.org/abs/2506.11884 https://arxiv.org/pdf/2506.11…

Acoustically driven dark matter freeze-out
We extend the study of the effect of density perturbations to the well known thermal dark matter freeze-out scenario. We find $\sim 10 \, \%$ enhancements in the cross section are required to match onto the observed relic abundance for primordial curvature perturbations $\sim 0.2$ at length scales $\sim 1/$Hubble at freeze-out. Such corrections may be of importance in scenarios in which such perturbations are present and observational signals, such as the indirect detection rate, depend sensiti…

@jake4480@c.im
2025-07-15 15:08:57

'Shark Dentist' is an upcoming game described by its devs as a 'unique horror roguelike' (more like a horror sim rogueLITE). It's coming to Steam soon-- definitely something I gotta try. 🦈 🦷
Here's the 'reveal trailer' they just posted (warning, some blood, etc): https://www.youtube.com/…

@arXiv_csRO_bot@mastoxiv.page
2025-07-14 09:26:32

Robotic Calibration Based on Haptic Feedback Improves Sim-to-Real Transfer
Juraj Gavura, Michal Vavrecka, Igor Farkas, Connor Gade
https://arxiv.org/abs/2507.08572

Robotic Calibration Based on Haptic Feedback Improves Sim-to-Real Transfer
When inverse kinematics (IK) is adopted to control robotic arms in manipulation tasks, there is often a discrepancy between the end effector (EE) position of the robot model in the simulator and the physical EE in reality. In most robotic scenarios with sim-to-real transfer, we have information about joint positions in both simulation and reality, but the EE position is only available in simulation. We developed a novel method to overcome this difficulty based on haptic feedback calibration, us…

@arXiv_astrophGA_bot@mastoxiv.page
2025-07-16 09:27:31

LATIS: Comparing Galaxy and IGM Tomography Maps as Tracers of Large-scale Structure and Protoclusters at $z \sim 2.5$
Andrew B. Newman, Nima Chartab, Mahdi Qezlou, Gwen C. Rudie, Guillermo A. Blanc, Daniel D. Kelson, Simeon Bird, Caitlin Casey, Enrico Congiu, Olga Cucciati, Denise Hung, Brian C. Lemaux, Victoria P\'erez, Jorge Zavala
https://

LATIS: Comparing Galaxy and IGM Tomography Maps as Tracers of Large-scale Structure and Protoclusters at $z \sim 2.5$
We investigate the consistency of intergalactic medium (IGM) tomography and galaxy surveys as tracers of the cosmic web and protoclusters at $z \sim 2.5$. We use maps from the Ly$α$ Tomography IMACS Survey (LATIS), which trace the distributions of Lyman-break galaxies (LBGs) and IGM Ly$α$ absorption on $\simeq 4$ $h^{-1}$ cMpc scales within the same large volume. Overall, the joint distribution of IGM absorption and LBG density is well constrained and accurately described by a simple physical…

@arXiv_csLG_bot@mastoxiv.page
2025-06-12 09:17:11

G-Sim: Generative Simulations with Large Language Models and Gradient-Free Calibration
Samuel Holt, Max Ruiz Luyten, Antonin Berthon, Mihaela van der Schaar
https://arxiv.org/abs/2506.09272

G-Sim: Generative Simulations with Large Language Models and Gradient-Free Calibration
Constructing robust simulators is essential for asking "what if?" questions and guiding policy in critical domains like healthcare and logistics. However, existing methods often struggle, either failing to generalize beyond historical data or, when using Large Language Models (LLMs), suffering from inaccuracies and poor empirical alignment. We introduce G-Sim, a hybrid framework that automates simulator construction by synergizing LLM-driven structural design with rigorous empirical calibration…

@metacurity@infosec.exchange
2025-07-02 07:49:55

https://cyberscoop.com/att-wireless-account-lock-sim-swapping-protection/
AT&T deploys new account lock feature to counter SIM swapping

AT&T deploys new account lock feature to counter SIM swapping
AT&T has launched a feature to help prevent SIM swapping and unauthorized account changes, offering added security for both individual and business wireless customers.

@arXiv_csDS_bot@mastoxiv.page
2025-07-16 09:05:41

Improved sampling algorithms and Poincar\'e inequalities for non-log-concave distributions
Yuchen He, Zhehan Lei, Jianan Shao, Chihao Zhang
https://arxiv.org/abs/2507.11236

Improved sampling algorithms and Poincaré inequalities for non-log-concave distributions
We study the problem of sampling from a distribution $μ$ with density $\propto e^{-V}$ for some potential function $V:\mathbb R^d\to \mathbb R$ with query access to $V$ and $\nabla V$. We start with the following standard assumptions: (1) The potential function $V$ is $L$-smooth. (2) The second moment $\mathbf{E}_{X\sim μ}[\|X\|^2]\leq M$. Recently, He and Zhang (COLT'25) showed that the query complexity of sampling from such distributions is at least $\left(\frac{LM}{dε}\rig…

@arXiv_astrophHE_bot@mastoxiv.page
2025-06-16 08:41:40

Magnetosonic Waves as a Driver of Observed Temperature Fluctuation Patterns in AGN Accretion Disks
Ish Kaul, Omer Blaes, Yan-Fei Jiang, Lizhong Zhang
https://arxiv.org/abs/2506.11189

Magnetosonic Waves as a Driver of Observed Temperature Fluctuation Patterns in AGN Accretion Disks
Recent observations have revealed slow, coherent temperature fluctuations in AGN disks that propagate both inward and outward at velocities of $\sim 0.01 - 0.1c$, a kind of variability that is distinct from reverberation (mediated by the reprocessing of light) between different regions of the disk. We investigate the origin and nature of these fluctuations using global 3D radiation-magnetohydrodynamic simulations of radiation and magnetic pressure-dominated AGN accretion disks. Disks with a sig…

@arXiv_astrophSR_bot@mastoxiv.page
2025-06-16 08:40:09

Discovery of Faint Nebulosity Around a Z Camelopardalis-type Cataclysmic Variable in Antlia: Nova Shell or Ancient Planetary Nebula?
Howard E. Bond (Penn State University, STScI), Dana Patchick (Deep Sky Hunters Consortium), Daniel Stern (MEA Observatory), Jonathan Talbot (Stark Bayou Observatory), John R. Thorstensen (Dartmouth)
https://

Discovery of Faint Nebulosity Around a Z Camelopardalis-type Cataclysmic Variable in Antlia: Nova Shell or Ancient Planetary Nebula?
We report our discovery of a faint nebula surrounding a previously little-studied 15th-mag variable star, ASASSN-19ds, in the southern-hemisphere constellation Antlia. Spectra verify that the star is a cataclysmic variable (CV). Using new and archival photometry, we confirm that ASASSN-19ds is an eclipsing binary with an orbital period of 0.139 days (3.34 hr). Moreover, its out-of-eclipse brightness shows a "sawtooth" light curve with an amplitude of $\sim$1~mag and an interval between peaks th…

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-16 09:44:50

Semi-empirical constraints on the HI mass function of star-forming galaxies and $\Omega_{\rm HI}$ at $z\sim 0.37$ from interferometric surveys
Francesco Sinigaglia, Alessandro Bianchetti, Giulia Rodighiero, Lucio Mayer, Miroslava Dessauges-Zavadsky, Ed Elson, Mattia Vaccari, Matt J. Jarvis
https://arxiv.org/abs/2506.11280…

Semi-empirical constraints on the HI mass function of star-forming galaxies and $Ω_{\rm HI}$ at $z\sim 0.37$ from interferometric surveys
The HI mass function is a crucial tool to understand the evolution of the HI content in galaxies over cosmic times and to constrain both the baryon cycle in galaxy evolution and the reionization history of the Universe. We aim to derive semi-empirical constraints at $z\sim 0.37$ by combining literature results on the stellar mass function from optical surveys with recent findings on the $M_{\rm HI}-M_\star$ scaling relation derived via spectral stacking analysis applied to 21-cm line interferom…

@kexpmusicbot@mastodonapp.uk
2025-07-14 05:35:01

🇺🇦 #NowPlaying on KEXP's #Expansions
Rainer Veil:
🎵 Sim Screen
#RainerVeil
https://open.spotify.com/track/1PpsfvMBRhegiMu5nelxIM

@arXiv_csMA_bot@mastoxiv.page
2025-07-15 09:15:11

TinyTroupe: An LLM-powered Multiagent Persona Simulation Toolkit
Paulo Salem, Robert Sim, Christopher Olsen, Prerit Saxena, Rafael Barcelos, Yi Ding
https://arxiv.org/abs/2507.09788

TinyTroupe: An LLM-powered Multiagent Persona Simulation Toolkit
Recent advances in Large Language Models (LLM) have led to a new class of autonomous agents, renewing and expanding interest in the area. LLM-powered Multiagent Systems (MAS) have thus emerged, both for assistive and simulation purposes, yet tools for realistic human behavior simulation -- with its distinctive challenges and opportunities -- remain underdeveloped. Existing MAS libraries and tools lack fine-grained persona specifications, population sampling facilities, experimentation support, …

@deepthoughts10@infosec.exchange
2025-07-09 13:10:50

Do you invest in #crypto or are you a public figure? You should take action to prevent a SIM swap attack. #cybersecurity
From: @…

Zack Whittaker (@zackwhittaker@mastodon.social)
SIM swap attacks allow hackers to steal someone's phone number and break into any online account connected to that number, usually by tricking a carrier's customer support. The good news is it's easy to lock down your phone number and takes just a minute or two. By me, at TechCrunch: https://techcrunch.com/2025/07/09/how-to-protect-your-cell-phone-number-from-sim-swap-attacks/

@arXiv_csCR_bot@mastoxiv.page
2025-06-27 07:33:28

SIMulator: SIM Tracing on a (Pico-)Budget
Gabriel K. Gegenhuber, Philipp \'E. Frenzel, Adrian Dabrowski
https://arxiv.org/abs/2506.20800 https://

SIMulator: SIM Tracing on a (Pico-)Budget
SIM tracing -- the ability to inspect, modify, and relay communication between a SIM card and modem -- has become a significant technique in cellular network research. It enables essential security- and development-related applications such as fuzzing communication interfaces, extracting session keys, monitoring hidden SIM activity (e.g., proactive SIM commands or over-the-air updates), and facilitating scalable, distributed measurement platforms through SIM reuse. Traditionally, achieving thes…

@arXiv_hepph_bot@mastoxiv.page
2025-06-16 08:49:49

Multiple Soft Scatterings in Scalar Dark Matter Freeze-In
Mathias Becker, Maria Jose Fernandez Lozano, Julia Harz, Carlos Tamarit
https://arxiv.org/abs/2506.11185

Multiple Soft Scatterings in Scalar Dark Matter Freeze-In
We present an improved calculation of the freeze-in production rate for scalar dark matter (DM) from a gauge-charged parent particle via a renormalizable interaction. Building on the previously developed 1PI-resummed framework to accurately capture the relevant regime $T \sim M$, we expand the analysis to include the Landau-Pomeranchuk-Migdal (LPM) effect, which contributes at leading order $g^2 T$ to the interaction rate in the ultra-relativistic limit. To this end, we derive an equation for t…

@arXiv_grqc_bot@mastoxiv.page
2025-07-14 09:24:12

Potential science with GW250114 -- the loudest binary black hole merger detected to date
Aleyna Aky\"uz, Alex Correia, Jada Garofalo, Keisi Kacanja, Labani Roy, Kanchan Soni, Hung Tan, Vikas Jadhav Y, Alexander H. Nitz, Collin D. Capano
https://arxiv.org/abs/2507.08789

Potential science with GW250114 -- the loudest binary black hole merger detected to date
On January 14, 2025 the LIGO interferometers detected a gravitational wave from the merger of two black holes, GW250114. Using publicly available information, we estimate that the signal-to-noise ratio (SNR) of GW250114 was $\sim 80$. This would make it three to four times louder than any other gravitational wave detected to date. GW250114 therefore offers a unique opportunity to make precise measurements of its source parameters and to test general relativity. In anticipation of its public dat…

@arXiv_astrophHE_bot@mastoxiv.page
2025-06-16 09:05:19

The Energy Spectrum of Ultra-High Energy Cosmic Rays across Declinations $-90^\circ$ to $ 44.8^\circ$ as measured at the Pierre Auger Observatory
Collaboration, Halim, Abreu, Aglietta, Allekotte, Cheminant, Almela, Aloisio, Alvarez-Mu\~niz, Ambrosone, Yebra, Anastasi, Anchordoqui, Andrada, Dourado, Andringa, Apollonio, Aramo, Arnone, Vel\'azquez, Assis, Avila, Avocone, Bakalova, Barbato, Mocellin, Bellido, Berat, Bertaina, Bianciotto, Biermann, Binet, Bismark, Bister, Biteau, Blaze…

The Energy Spectrum of Ultra-High Energy Cosmic Rays across Declinations $-90^\circ$ to $+44.8^\circ$ as measured at the Pierre Auger Observatory
The energy spectrum of cosmic rays above 2.5 EeV has been measured across the declination range $-90^\circ \leqδ\leq +44.8^\circ$ using data from $\sim 310{,}000$ events accrued at the Pierre Auger Observatory from an exposure of $(104{,}900\pm 3{,}100)$ km$^2\,$sr$\,$yr. No significant variations of energy spectra with declination are observed, after allowing or not for non-uniformities across the sky arising from the well-established dipolar anisotropies in the arrival directions of ultra-hi…

@arXiv_astrophGA_bot@mastoxiv.page
2025-07-16 09:17:41

LATIS: A Sample of IGM-selected Protoclusters and Protogroups at $z \sim 2.5$
Andrew B. Newman, Mahdi Qezlou, Gwen C. Rudie, Nima Chartab, Guillermo A. Blanc, Daniel D. Kelson, Simeon Bird, Caitlin Casey, Enrico Congiu, Olga Cucciati, Denise Hung, Brian C. Lemaux, Victoria P\'erez, Jorge Zavala
https://arxiv.org/abs/2507.109…

LATIS: A Sample of IGM-selected Protoclusters and Protogroups at $z \sim 2.5$
The Ly$α$ Tomography IMACS Survey (LATIS) has produced large 3D maps of the intergalactic medium (IGM), providing a new window on the cosmic web at $z\sim2.5$. A key advantage of Ly$α$ tomography is that it enables the discovery of overdense regions without the need to detect their galaxy members in spectroscopic surveys, circumventing possible selection biases. We use these maps to identify 37 IGM-selected overdensities as regions of strong and spatially coherent Ly$α$ absorption. Simulatio…

@arXiv_eessSP_bot@mastoxiv.page
2025-07-10 09:20:41

How to Bridge the Sim-to-Real Gap in Digital Twin-Aided Telecommunication Networks
Clement Ruah, Houssem Sifaou, Osvaldo Simeone, Bashir M. Al-Hashimi
https://arxiv.org/abs/2507.07067

How to Bridge the Sim-to-Real Gap in Digital Twin-Aided Telecommunication Networks
Training effective artificial intelligence models for telecommunications is challenging due to the scarcity of deployment-specific data. Real data collection is expensive, and available datasets often fail to capture the unique operational conditions and contextual variability of the network environment. Digital twinning provides a potential solution to this problem, as simulators tailored to the current network deployment can generate site-specific data to augment the available training datase…

@arXiv_csRO_bot@mastoxiv.page
2025-07-14 09:00:52

Learning Robust Motion Skills via Critical Adversarial Attacks for Humanoid Robots
Yang Zhang, Zhanxiang Cao, Buqing Nie, Haoyang Li, Yue Gao
https://arxiv.org/abs/2507.08303

Learning Robust Motion Skills via Critical Adversarial Attacks for Humanoid Robots
Humanoid robots show significant potential in daily tasks. However, reinforcement learning-based motion policies often suffer from robustness degradation due to the sim-to-real dynamics gap, thereby affecting the agility of real robots. In this work, we propose a novel robust adversarial training paradigm designed to enhance the robustness of humanoid motion policies in real worlds. The paradigm introduces a learnable adversarial attack network that precisely identifies vulnerabilities in motio…

@arXiv_csHC_bot@mastoxiv.page
2025-06-12 07:48:21

"Is This Really a Human Peer Supporter?": Misalignments Between Peer Supporters and Experts in LLM-Supported Interactions
Kellie Yu Hui Sim, Roy Ka-Wei Lee, Kenny Tsu Wei Choo
https://arxiv.org/abs/2506.09354

"Is This Really a Human Peer Supporter?": Misalignments Between Peer Supporters and Experts in LLM-Supported Interactions
Mental health is a growing global concern, prompting interest in AI-driven solutions to expand access to psychosocial support. Peer support, grounded in lived experience, offers a valuable complement to professional care. However, variability in training, effectiveness, and definitions raises concerns about quality, consistency, and safety. Large Language Models (LLMs) present new opportunities to enhance peer support interactions, particularly in real-time, text-based interactions. We present …

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-16 09:44:59

Circum-nuclear eccentric gas flow in the Galactic Center revealed by ALMA CMZ Exploration Survey (ACES)
Yoshiaki Sofue, Tomoharu Oka, Steven N. Longmore, Daniel Walker, Adam Ginsburg, Jonathan D. Henshaw, John Bally, Ashley T. Barnes, Cara Battersby, Laura Colzi, Paul Ho, Izaskun Jimenez-Serra, J. M. Diederik Kruijssen, Elizabeth Mills, Maya A. Petkova, Mattia C. Sormani, Jennifer Wallace, Jairo Armijos-Abenda\~no, Katarzyna M. Dutkowska, Rei Enokiya, Pablo Garc\'ia, Savannah Gramz…

Circum-nuclear eccentric gas flow in the Galactic Center revealed by ALMA CMZ Exploration Survey (ACES)
We analyze the CS (J=2-1) line cube from the internal data release obtained by the large-scale program "ALMA CMZ Exploration Survey (ACES)" to investigate the kinematic structure of the innermost $\sim 10$ pc region of the Galaxy, which contains the high-velocity compact cloud (HVCC) at $(l,b,v_{\rm lsr})\sim(+0^\circ.02,-0^\circ.02, 100 {\rm km~s}^{-1})$ (hereafter G0.02). The longitude-velocity diagram (LVD) of the cloud draws an elliptical structure, which is interpreted as an orbital trajec…

@arXiv_astrophHE_bot@mastoxiv.page
2025-06-16 08:49:59

Multi-band Emission from Star-Disk Collision and Implications for Quasi-Periodic Eruptions
Xiaoshan Huang, Itai Linial, Yan-Fei Jiang
https://arxiv.org/abs/2506.11231

Multi-band Emission from Star-Disk Collision and Implications for Quasi-Periodic Eruptions
We perform two-dimensional, multi-group radiation hydrodynamic simulations to explore the observational properties of a solar-like star colliding with an accretion disk around a supermassive black hole at separation of $\sim 100$ gravitational radii. We find that the star-disk collision produces ejecta on both sides of the disk. As the ejecta expand and cool, transient flares arise, reaching peak bolometric luminosity of up to $L\gtrsim10^{43}\rm erg~s^{-1}$. We estimate that the typical light …

@arXiv_astrophCO_bot@mastoxiv.page
2025-06-13 08:40:30

Positron Signal from the Early Universe
L. Stodolsky, J. Silk
https://arxiv.org/abs/2506.10131 https://arxiv.org/pdf/2506.10131

Positron Signal from the Early Universe
Bursts from the very early universe may lead to a detectable signal via the production of positrons, whose annihilation gives an observable X-ray signal. Using the absorption parameters for the annihilation photons of 511 keV, it is found that observable photons would originate at a red-shift around $z\approx$ 200-300, resulting in soft X-rays of energy $\sim$ 2-3 keV at present. Positrons are expected to be absent at these times or red-shifts in the standard picture of the early universe. Dete…

@arXiv_condmatstatmech_bot@mastoxiv.page
2025-07-09 09:39:22

Finite-size scaling of percolation on scale-free networks
Xuewei Zhao, Liwenying Yang, Dan Peng, Run-Ran Liu, Ming Li
https://arxiv.org/abs/2507.05998 http…

Finite-size scaling of percolation on scale-free networks
Critical phenomena on scale-free networks with a degree distribution $p_k \sim k^{-λ}$ exhibit rich finite-size effects due to its structural heterogeneity. We systematically study the finite-size scaling of percolation and identify two distinct crossover routes to mean-field behavior: one controlled by the degree exponent $λ$, the other by the degree cutoff $K \sim V^κ$, where $V$ is the system size and $κ\in [0,1]$ is the cutoff exponent. Increasing $λ$ or decreasing $κ$ suppresses hete…

@arXiv_mathNT_bot@mastoxiv.page
2025-06-11 08:30:05

On the Markoff spectrum on the 6th Hecke group
Byungchul Cha, Dong Han Kim, Deokwon Sim
https://arxiv.org/abs/2506.08358 https://arxi…

On the Markoff spectrum on the 6th Hecke group
The discrete part of the Markoff spectrum on the 6th Hecke group $\mathbf H_6$ was known by A. Schmidt. In this paper, we study the Markoff and Lagrange spectra on $\mathbf H_6$ after the smallest accumulation point $4/\sqrt{3}$. We show that both spectra below $4/\sqrt{3} + ε$ have positive Hausdorff dimension for any positive $ε$. We also find maximal gaps and an isolated point in the spectra.

@arXiv_mathLO_bot@mastoxiv.page
2025-05-27 13:38:48

This https://arxiv.org/abs/2505.01936 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Algebraic structures arising from the finite condensation on linear orders
The finite condensation $\sim_F$ is an equivalence relation defined on a linear order $L$ by $x \sim_F y$ if and only if the set of points lying between $x$ and $y$ is finite. We define an operation $\cdot_F$ on linear orders $L$ and $M$ by $L \cdot_F M = \operatorname{o.t.}\left((LM)/\!\sim_F\right)$; that is, $L \cdot_F M$ is the order type of the lexicographic product of $L$ and $M$ modulo the finite condensation. The infinite order types $L$ such that $L / \! \sim_F\, \cong 1$ are $ω, ω^*…

@arXiv_astrophHE_bot@mastoxiv.page
2025-06-16 08:58:19

Event-by-event reconstruction of air-shower events with IceCube using a two component lateral distribution function
Mark Weyrauch (for the IceCube Collaboration)
https://arxiv.org/abs/2506.11507

Event-by-event reconstruction of air-shower events with IceCube using a two component lateral distribution function
The IceCube Neutrino Observatory, located at the geographic South Pole, comprises a surface component, IceTop, and an optical in-ice array. This unique com\-bi\-na\-tion allows for coincident measurements of low-energy ($\sim \rm{GeV}$) and high-energy ($\gtrsim 400\,\rm{GeV}$) muons produced in cosmic-ray air showers. The ratio of the low- and high-energy muon yields can constitute a useful tool not only for composition analyses but also for testing different hadronic interaction models. Howev…

@arXiv_grqc_bot@mastoxiv.page
2025-07-14 08:46:21

Improving gravitational wave search sensitivity with TIER: Trigger Inference using Extended strain Representation
Digvijay Wadekar, Arush Pimpalkar, Mark Ho-Yeuk Cheung, Benjamin Wandelt, Emanuele Berti, Ajit Kumar Mehta, Tejaswi Venumadhav, Javier Roulet, Tousif Islam, Barak Zackay, Jonathan Mushkin, Matias Zaldarriaga
https://…

Improving gravitational wave search sensitivity with TIER: Trigger Inference using Extended strain Representation
We introduce a machine learning (ML) framework called $\texttt{TIER}$ for improving the sensitivity of gravitational wave search pipelines. Typically, search pipelines only use a small region of strain data in the vicinity of a candidate signal to construct the detection statistic. However, extended strain data ($\sim 10$ s) in the candidate's vicinity can also carry valuable complementary information. We show that this information can be efficiently captured by ML classifier models trained on …

@life_is@no-pony.farm
2025-06-19 12:24:35

@…
Zwei Fehlerberichte:
Nach einschalten und Ausschalten funktioniert die SIM nicht mehr. In den Benachrichtigungen steht ein Ausrufezeichen. Ich habe die SIM im Telefonladen durch eine neue ersetzen lassen und den Vertrag prüfen lassen. Es liegt am Shiftphone.
Bei der Nutzung von F-Droid wird ein fehlerhaftes Shift-Zertifikat angezeigt…

Screenshot Shiftphone 8.1, F-Droid. Toast: "SHIFT: Signing certificate does not match". Shift OS G

@arXiv_csSD_bot@mastoxiv.page
2025-07-11 09:31:21

LISTEN: Lightweight Industrial Sound-representable Transformer for Edge Notification
Changheon Han, Yun Seok Kang, Yuseop Sim, Martin Byung-Guk Jun, Hyung Wook Park
https://arxiv.org/abs/2507.07879

LISTEN: Lightweight Industrial Sound-representable Transformer for Edge Notification
Deep learning-based machine listening is broadening the scope of industrial acoustic analysis for applications like anomaly detection and predictive maintenance, thereby improving manufacturing efficiency and reliability. Nevertheless, its reliance on large, task-specific annotated datasets for every new task limits widespread implementation on shop floors. While emerging sound foundation models aim to alleviate data dependency, they are too large and computationally expensive, requiring cloud …

@smurthys@hachyderm.io
2025-06-06 06:42:38

Physical: No shoes, No service
Virtual: No SIM, No service
#travel #technology #comparison

@arXiv_physicsfludyn_bot@mastoxiv.page
2025-06-12 09:49:51

A Diffuse-Interface Marangoni Instability
Xiangwei Li, Dongdong Wan, Haohao Hao, Christian Diddens, Mengqi Zhang, Huanshu Tan
https://arxiv.org/abs/2506.09945

A Diffuse-Interface Marangoni Instability
We investigate a novel Marangoni-induced instability that arises exclusively in diffuse fluid interfaces, absent in classical sharp-interface models. Using a validated phase-field Navier-Stokes-Allen-Cahn framework, we linearize the governing equations to analyze the onset and development of interfacial instability driven by solute-induced surface tension gradients. A critical interfacial thickness scaling inversely with the Marangoni number, $δ_\mathrm{cr} \sim Ma^{-1}$, emerges from the bala…

@luana@wetdry.world
2025-05-05 14:33:45

Not sure if those work with a prepaid sim card on a modem (nor if it’s legal to setup such an answering machine on one of them here), but I’ll do some research on it
As for voip numbers, no idea how those work and if they’re universal or if I have to get one from a provider explicitly made for Asterisk compatibility, but they seem quite expensive (specially since the prepaid ones would be basically free since it’s only for receiving calls from nerds, not making calls) anyway.

@arXiv_hepth_bot@mastoxiv.page
2025-06-11 09:41:55

Compact Temporal Geometry and the $T^2$ Framework for Quantum Gravity
James Hateley
https://arxiv.org/abs/2506.08165 https://arxiv.or…

Compact Temporal Geometry and the $T^2$ Framework for Quantum Gravity
We introduce a two-dimensional temporal framework in which time is represented by a compact manifold $T^2 = (t_1, t_2)$, with $t_1$ encoding classical causal structure and $t_2$ representing quantum coherence. This construction unifies unitary evolution, decoherence, measurement collapse, and gravitational dynamics within a consistent geometric and algebraic formalism. Compactification of the coherence time $t_2$ yields a minimal temporal resolution $Δt_2 \sim \sqrt{α'}$, leading to a discret…

@arXiv_mathAC_bot@mastoxiv.page
2025-06-03 07:28:47

On Divisor Topology of Modules over Domains
\"Unsal Tekir, U\u{g}ur Yi\u{g}it, Mesut Bu\u{g}day, Suat Ko\c{c}
https://arxiv.org/abs/2506.01179 https:/…

On Divisor Topology of Modules over Domains
Let $M\ $be a module over a domain $R$ and $M^{\#}=\{0\neq m\in M:Rm\neq M\}$ be the set of all nonzero nongenerators of $M.\ $Consider following equivalence relation $\sim$ on $M^{\#}$ as follows: for every $m,n\in M^{\#},\ m\sim n$ if and only if $Rm=Rn.\ $Let $EC(M^{\#})$ be the set of all equivalence classes of $M^{\#}$ with respect to $\sim$. In this paper, we construct a topology on $EC(M^{\#})$ which is called divisor topology of $M\ $and denoted by $D(M).$ Actually, $D(M)$ is extension …

@arXiv_qfinPM_bot@mastoxiv.page
2025-05-13 10:24:33

This https://arxiv.org/abs/2504.11116 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qfi…

Breaking the Dimensional Barrier: A Pontryagin-Guided Direct Policy Optimization for Continuous-Time Multi-Asset Portfolio
Solving large-scale, continuous-time portfolio optimization problems involving numerous assets and state-dependent dynamics has long been challenged by the curse of dimensionality. Traditional dynamic programming and PDE-based methods, while rigorous, typically become computationally intractable beyond a few state variables ($\sim$3-6 limit in prior studies). To overcome this critical barrier, we introduce the \emph{Pontryagin-Guided Direct Policy Optimization} (PG-DPO) framework. PG-DPO levera…

@arXiv_physicsinsdet_bot@mastoxiv.page
2025-06-12 09:18:21

Observation of a low energy nuclear recoil peak in the neutron calibration data of an Al$_{2}$O$_{3}$ crystal in CRESST-III
CRESST Collaboration, G. Angloher, S. Banik, A. Bento, A. Bertolini, R. Breier, C. Bucci, L. Burmeister, F. Casadei, E. Cipelli, J. Burkhart, L. Canonica, J. Dohm, F. Dominsky, S. Di Lorenzo, L. Einfalt, A. Erb, E. Fascione, F. v. Feilitzsch, S. Fichtinger, D. Fuchs, V. M. Ghete, P. Gorla, P. V. Guillaumon, D. Hauff, M. Je\v{s}kovsk\'y, J. Jochum, M. Kaznachee…

Observation of a low energy nuclear recoil peak in the neutron calibration data of an Al$_{2}$O$_{3}$ crystal in CRESST-III
The current generation of cryogenic solid state detectors used in direct dark matter and CE\textnu NS searches typically reach energy thresholds of $\mathcal{O}$(10)$\,$eV for nuclear recoils. For a reliable calibration in this energy regime a method has been proposed, providing mono-energetic nuclear recoils at low energies $\sim\,$100$\,$eV$\,$-$\,$1$\,$keV. In this work we report on the observation of a peak at (1113.6$^{+6.5}_{-6.5}$)$\,$eV in the data of an Al$_{2}$O$_{3}$ crystal in CRESS…

@arXiv_mathAP_bot@mastoxiv.page
2025-07-02 09:20:19

Normalized ground states for NLS equations with mass critical nonlinearities
Silvia Cingolani, Marco Gallo, Norihisa Ikoma, Kazunaga Tanaka
https://arxiv.org/abs/2507.00639

Normalized ground states for NLS equations with mass critical nonlinearities
We study normalized solutions $(μ,u)\in \mathbb{R} \times H^1(\mathbb{R}^N)$ to nonlinear Schrödinger equations $$ -Δu + μu = g(u)\quad \hbox{in}\ \mathbb{R}^N, \qquad \frac{1}{2}\int_{\mathbb{R}^N} u^2 dx = m, $$ where $N\geq 2$ and the mass $m>0$ is given. Here $g$ has an $L^2$-critical growth, both in the origin and at infinity, that is $g(s)\sim |s|^{p-1}s$ as $s\sim 0$ and $s\sim\infty$, where $p=1+\frac{4}{N}$. We continue the analysis started in [Cingolani-Gallo-Ikoma-Tan…

@penguin42@mastodon.org.uk
2025-06-05 17:32:46

My JS Krups is resisting netbooting. I see it doing a DHCP discover, and I see Kea responding with an offer, but then it just sends another Discover. Hmph. I can get to the serial console and doing boot net from there doesn't help; none of the keyboard shortcuts for network diag etc seem to work (except the one that displays the help for it...). So I took the flash SIM out and now it boots to Net rather than flash by default; alas with the same DHCP behaviour. Time to try isc-dhcp.…

A serial console photo, showing a Javastation openbootprom 'ok' prompt and help and 'show-devs' output. It's a boring white on black text.

The mainboard of a Javastation Krups, to the left are various connectors, just above middle is a speaker and below that the Microsparc, to the right are two RAM dimms and a flash SIMM.

A horribly hacky serial setup; between two keyboards sits a serial breakout box, various wires and crock clip leads. It's working by good luck rather than physics, The lights for RX/TX are green and the next LED is red.

@arXiv_astrophIM_bot@mastoxiv.page
2025-07-11 08:30:31

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…

@arXiv_condmatmtrlsci_bot@mastoxiv.page
2025-07-11 08:55:51

Promising ferroelectric metal EuAuBi with switchable giant shift current
Guangrong Tan, Jinyu Zou, Gang Xu
https://arxiv.org/abs/2507.07403 https://…

Promising ferroelectric metal EuAuBi with switchable giant shift current
The coexistence of metallicity and ferroelectricity in ferroelectric (FE) metals defies conventional wisdom and enables novel functionalities in electronic and optoelectronic systems. However, intrinsic FE metals remain extremely rare and challenging. Here, using first-principles calculations, we identify that a huge spontaneous polarization of 16.6-20.2 $μ\text{C}/\text{cm}^2$, a moderate switching barrier of 68.5 meV/f.u., and a low carrier concentration of $ \sim 2.5 \times 10^{20}$ cm$^{-3…

@arXiv_qbioQM_bot@mastoxiv.page
2025-05-28 07:37:25

ZV-Sim: Probabilistic Simulation Framework for Pre-emergent Novel Zoonose Tracking
Joseph Maffetone, Julia Gersey, Pei Zhang
https://arxiv.org/abs/2505.20319

ZV-Sim: Probabilistic Simulation Framework for Pre-emergent Novel Zoonose Tracking
ZV-Sim is an open-source, modular Python framework for probabilistic simulation and analysis of pre-emergent novel zoonotic diseases using pervasive sensing data. It incorporates customizable Human and Animal Presence agents that leverage known and simulated location data, contact networks, and illness reports to assess and predict disease origins and spread. The framework supports Monte Carlo experiments to analyze outcomes with various user-defined movement and probability models. Although in…

@arXiv_csHC_bot@mastoxiv.page
2025-06-12 07:49:41

"I Said Things I Needed to Hear Myself": Peer Support as an Emotional, Organisational, and Sociotechnical Practice in Singapore
Kellie Yu Hui Sim, Kenny Tsu Wei Choo
https://arxiv.org/abs/2506.09362

"I Said Things I Needed to Hear Myself": Peer Support as an Emotional, Organisational, and Sociotechnical Practice in Singapore
Peer support plays a vital role in expanding access to mental health care by providing empathetic, community-based support outside formal clinical systems. As digital platforms increasingly mediate such support, the design and impact of these technologies remain under-examined, particularly in Asian contexts. This paper presents findings from an interview study with 20 peer supporters in Singapore, who operate across diverse online, offline, and hybrid environments. Through a thematic analysis,…

@arXiv_csRO_bot@mastoxiv.page
2025-06-10 17:28:29

This https://arxiv.org/abs/2506.04120 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

Splatting Physical Scenes: End-to-End Real-to-Sim from Imperfect Robot Data
Creating accurate, physical simulations directly from real-world robot motion holds great value for safe, scalable, and affordable robot learning, yet remains exceptionally challenging. Real robot data suffers from occlusions, noisy camera poses, dynamic scene elements, which hinder the creation of geometrically accurate and photorealistic digital twins of unseen objects. We introduce a novel real-to-sim framework tackling all these challenges at once. Our key insight is a hybrid scene represen…

@arXiv_astrophGA_bot@mastoxiv.page
2025-07-14 09:33:42

The THESAN-ZOOM project: Mystery N/O more -- uncovering the origin of peculiar chemical abundances and a not-so-fundamental metallicity relation at $3<z<12$
William McClymont, Sandro Tacchella, Aaron Smith, Rahul Kannan, Enrico Garaldi, Ewald Puchwein, Yuki Isobe, Xihan Ji, Xuejian Shen, Zihao Wang, Vasily Belokurov, Josh Borrow, Francesco D'Eugenio, Laura Keating, Roberto Maiolino, Stephanie Monty, Mark Vogelsberger, Oliver Zier

The THESAN-ZOOM project: Mystery N/O more -- uncovering the origin of peculiar chemical abundances and a not-so-fundamental metallicity relation at $3
We present an analysis of metallicities and chemical abundances at $3

@rufposten@social.tchncs.de
2025-06-09 18:00:08

Wegwerfnummern Teil 2: Die Prepaid-Klassiker
https://www.kuketz-blog.de/die-prepaid-klassiker-wegwerfnummern-teil-2/
Wo kriegt man am schnellsten, einfachsten und billigsten eine SIM- oder eSIM für Shops oder Registrierungen, die man alle p…

Die Prepaid-Klassiker – Wegwerfnummern Teil 2
Testbericht: Welche Prepaid-Anbieter eigenen sich besonders, um sich eine Wegwerfnummer für Anmeldungen und Registrierungen zu besorgen?

@arXiv_hepph_bot@mastoxiv.page
2025-07-11 09:18:31

Entropy production at electroweak bubble walls from scalar field fluctuations
M. Eriksson, M. Laine
https://arxiv.org/abs/2507.07755 https://

Entropy production at electroweak bubble walls from scalar field fluctuations
The real-time dynamics of an electroweak phase transition involves large time and distance scales, the domain of hydrodynamics. However, the matching conditions of ideal hydrodynamics across a bubble wall do not fix the fluid profile completely, with the remaining degree of freedom parametrizable through entropy production. Within a framework of Langevin dynamics, viewed as an effective description valid between the hydrodynamic ($k \sim g^4_{ } T/π^3_{ }$) and soft momentum scales ($k \sim gT…

@arXiv_astrophCO_bot@mastoxiv.page
2025-06-12 08:37:01

Computing Nonlinear Power Spectra Across Dynamical Dark Energy Model Space with Neural ODEs
Peter L. Taylor
https://arxiv.org/abs/2506.09128 https://

Computing Nonlinear Power Spectra Across Dynamical Dark Energy Model Space with Neural ODEs
I show how to compute the nonlinear power spectrum across the entire $w(z)$ dynamical dark energy model space. Using synthetic $Λ$CDM data, I train a neural ordinary differential equation (ODE) to infer the evolution of the nonlinear matter power spectrum as a function of the background expansion and mean matter density across $\sim$$9 {\rm \ Gyr}$ of cosmic evolution. After training, the model generalises to {\it any} dynamical dark energy model parameterised by $w(z)$. With little optimisati…

@arXiv_astrophSR_bot@mastoxiv.page
2025-06-06 09:46:35

This https://arxiv.org/abs/2407.19004 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Weighing The Options: The Unseen Companion in LAMOST J2354 is Likely a Massive White Dwarf
LAMOST J235456.73+335625 (J2354) is a binary system hosting a $\sim 0.7~\rm M_\odot$ K dwarf and a $\sim 1.4~\rm M_\odot$ dark companion, supposedly a neutron star, in a 0.48d orbit. Here we present high- and low-resolution spectroscopy to better constrain the properties of the system. The low-resolution spectrum confirms that the luminous star is a slightly metal-poor K dwarf and strengthens the limits on any optical flux from the dimmer companion. We use the high-resolution spectra to measure…

@matematico314@social.linux.pizza
2025-07-07 01:15:53

A minha comida chegou com as batatas fritas murchas e eu resmunguei em voz alta "que batatas feias". E eu jš imaginei as batatas me respondendo: "Até parece que você é o Tom Cruise". Sim, eu pareço sério mas é esse o tipo de pessoa que eu sou rs.

@arXiv_condmatstatmech_bot@mastoxiv.page
2025-07-11 09:20:21

Hyperuniformity at the Absorbing State Transition: Perturbative RG for Random Organization
Xiao Ma, Johannes Pausch, Gunnar Pruessner, Michael E. Cates
https://arxiv.org/abs/2507.07793

Hyperuniformity at the Absorbing State Transition: Perturbative RG for Random Organization
Hyperuniformity, where the static structure factor obeys $S(q)\sim q^ς$ with $ς> 0$, emerges at criticality in systems having multiple, symmetry-unrelated, absorbing states. Important examples arise in periodically sheared suspensions and amorphous solids; these lie in the random organisation (RO) universality class, for which analytic results for $ς$ are lacking. Here, using Doi-Peliti field theory and perturbative RG about a Gaussian model, we find $ς= 0^+$ and $ς= 2ε/9 + O(ε^2)$ in di…

@arXiv_csRO_bot@mastoxiv.page
2025-06-05 07:23:29

Splatting Physical Scenes: End-to-End Real-to-Sim from Imperfect Robot Data
Ben Moran, Mauro Comi, Steven Bohez, Tom Erez, Zhibin Li, Leonard Hasenclever
https://arxiv.org/abs/2506.04120

Splatting Physical Scenes: End-to-End Real-to-Sim from Imperfect Robot Data
Creating accurate, physical simulations directly from real-world robot motion holds great value for safe, scalable, and affordable robot learning, yet remains exceptionally challenging. Real robot data suffers from occlusions, noisy camera poses, dynamic scene elements, which hinder the creation of geometrically accurate and photorealistic digital twins of unseen objects. We introduce a novel real-to-sim framework tackling all these challenges at once. Our key insight is a hybrid scene represen…

@arXiv_astrophHE_bot@mastoxiv.page
2025-07-14 09:42:12

A composition-informed search for large-scale anisotropy with the Pierre Auger Observatory
G. Golup (for the Pierre Auger Collaboration)
https://arxiv.org/abs/2507.08564

A composition-informed search for large-scale anisotropy with the Pierre Auger Observatory
The large-scale dipolar structure in the arrival directions of ultra-high-energy cosmic rays with energies above $8\,$EeV observed by the Pierre Auger Collaboration is a well-established anisotropy measurement. This anisotropy is understood to be of extragalactic origin, as the maximum of the dipolar component is located ${\sim}115^\circ$ away from the Galactic Center. Cosmic rays interact with background radiation and magnetized regions on their path from their sources to Earth. These interact…

@arXiv_csSD_bot@mastoxiv.page
2025-07-10 07:38:01

IMPACT: Industrial Machine Perception via Acoustic Cognitive Transformer
Changheon Han, Yuseop Sim, Hoin Jung, Jiho Lee, Hojun Lee, Yun Seok Kang, Sucheol Woo, Garam Kim, Hyung Wook Park, Martin Byung-Guk Jun
https://arxiv.org/abs/2507.06481

IMPACT: Industrial Machine Perception via Acoustic Cognitive Transformer
Acoustic signals from industrial machines offer valuable insights for anomaly detection, predictive maintenance, and operational efficiency enhancement. However, existing task-specific, supervised learning methods often scale poorly and fail to generalize across diverse industrial scenarios, whose acoustic characteristics are distinct from general audio. Furthermore, the scarcity of accessible, large-scale datasets and pretrained models tailored for industrial audio impedes community-driven res…

@arXiv_astrophSR_bot@mastoxiv.page
2025-06-02 07:29:22

Long-term investigation of an open cluster Berkeley 65
Tarak Chand, Saurabh Sharma, Koshvendra Singh, Jeewan Pandey, Aayushi Verma, Harmeen Kaur, Mamta, Manojit Chakraborty, Devendra K. Ojha, Ajay Kumar Singh
https://arxiv.org/abs/2505.24240

Long-term investigation of an open cluster Berkeley 65
We present a decade-long investigation of a poorly studied cluster, Berkeley 65 (Be 65), using deep optical data from the telescopes of ARIES, Nainital Observatory. We estimate its radius ($R_{cluster}$ = 1.6$^{'}$, aspect ratio of $\sim$1.1), distance (2.0 $\pm$ 0.1 kpc) and age ($\sim$160 Myrs). A clear turn-off point at $\sim$1.7 M$_\odot$ in the mass function suggests the escape of low-mass stars, and the lower photometric mass compared to the dynamical mass indicates ongoing disruption due…

@arXiv_hepph_bot@mastoxiv.page
2025-07-09 09:54:42

Temporal Incompatibility of Quantum Superposition and Relativistic Causality in Toponium Formation
Chang Xiong, Yu-Jie Zhang
https://arxiv.org/abs/2507.05703

Temporal Incompatibility of Quantum Superposition and Relativistic Causality in Toponium Formation
Wave-particle duality, a cornerstone of quantum mechanics, faces a stringent test in toponium formation. Quantum superposition predicts instantaneous projection into bound states upon top quark pair creation, while relativistic causality requires a finite formation time of $\sim n^3 \times 10^{-25}$ s for the $nS$ states. This temporal conflict challenges the coexistence of wavelike and particlelike behavior at ultrashort timescales. Exploiting the top quark's intrinsic lifetime ($τ_t \sim 5 \…

@arXiv_astrophCO_bot@mastoxiv.page
2025-07-11 08:25:01

Ten-dimensional neural network emulator for the nonlinear matter power spectrum
Yanhui Yang, Simeon Bird, Ming-Feng Ho, Mahdi Qezlou
https://arxiv.org/abs/2507.07177

Ten-dimensional neural network emulator for the nonlinear matter power spectrum
We present GokuNEmu, a ten-dimensional neural network emulator for the nonlinear matter power spectrum, designed to support next-generation cosmological analyses. Built on the Goku $N$-body simulation suite and the T2N-MusE emulation framework, GokuNEmu predicts the matter power spectrum with $\sim 0.5 \%$ average accuracy for redshifts $0 \leq z \leq 3$ and scales $0.006 \leq k/(h\,\mathrm{Mpc}^{-1}) \leq 10$. The emulator models a 10D parameter space that extends beyond $Λ$CDM to include dyn…

@arXiv_condmatstatmech_bot@mastoxiv.page
2025-07-11 09:26:41

Finite-time and Finite-size scalings of coercivity in dynamic hysteresis
Miao Chen, Xiu-Hua Zhao, Yu-Han Ma
https://arxiv.org/abs/2507.07933 https://

Finite-time and Finite-size scalings of coercivity in dynamic hysteresis
The coercivity panorama for characterizing the dynamic hysteresis in interacting systems across multiple timescales is proposed by Chen et al. in a companion paper. For the stochastic $ϕ^4$ model under periodic driving of rate $v_H$, the coercivity landscape $H_c(v_H)$ exhibits plateau features at a characteristic rate $v_P$ with the corresponding coercivity $H_P$. Below this plateau ($v_H

@arXiv_astrophHE_bot@mastoxiv.page
2025-06-13 09:25:10

Identifying Compact Chirping SMBHBs in LSST using Bayesian Analysis
Chengcheng Xin, Maximiliano Isi, Will M. Farr, Zolt\'an Haiman
https://arxiv.org/abs/2506.10846

Identifying Compact Chirping SMBHBs in LSST using Bayesian Analysis
The Legacy Survey of Space and Time (LSST) is expected to observe up to ${\sim}100$ million quasars in the next decade. In this work, we show that it is possible to use such data to measure the characteristic frequency evolution of a "chirp" induced by gravitational waves, which can serve as robust evidence for the presence of a compact supermassive black-hole binary. Following the LSST specifications, we generate mock lightcurves consisting of (i) a post-Newtonian chirp produced by orbital mot…

@jorgecandeias@mastodon.social
2025-06-07 16:04:06

A. Sim. Os Quatro Abades, essa potência mundial.
https://ciberlandia.pt/@PureDeNoticias/114642911384015314

@arXiv_hepph_bot@mastoxiv.page
2025-06-12 09:12:02

Precision $e^ e^-$ Hemisphere Masses in the Dijet Region with Power Corrections
Andre H. Hoang, Vicent Mateu, Matthew D. Schwartz, Iain W. Stewart
https://arxiv.org/abs/2506.09130

Precision $e^+e^-$ Hemisphere Masses in the Dijet Region with Power Corrections
We derive high-precision results for the $e^+e^-$ heavy jet mass (HJM) $d σ/d ρ$ and dihemisphere mass (DHM) $d^2σ/(d s_1 d s_2)$ distributions, for $s_1\sim s_2$, in the dijet region. New results include: i) the N$^3$LL resummation for HJM of large logarithms $\ln^n(ρ)$ at small $ρ$ including the exact two-loop non-global hemisphere soft function, the 4-loop cusp anomalous dimension and the 3-loop hard and jet functions, ii) N$^3$LL results for DHM with resummation of logarithms $\ln(s_{1…

@arXiv_astrophSR_bot@mastoxiv.page
2025-06-11 09:15:35

Precise Age For The Binary HD 21278 In The Young Alpha Persei Cluster
Christopher A. Danner, Eric L. Sandquist, Gail H. Schaefer, Luigi R. Bedin, Christopher D. Farrington, Cyprien Lanthermann, Stefan Kraus, Robert Klement, Narsireddy Anugu, John D. Monnier, Jerome A. Orosz, Isabelle Codron, Tyler Gardner, Mayra Gutierrez, Benjamin R. Setterholm, Jeremy Jones, Becky Flores
…

Precise Age For The Binary HD 21278 In The Young Alpha Persei Cluster
We present a study of the double-lined spectroscopic binary HD 21278 that contains one of the brightest main sequence stars in the young $α$ Persei open cluster. We analyzed new spectra and reanalyzed archived spectra to measure precise new radial velocity curves for the binary. We also obtained interferometric data using the CHARA Array at Mount Wilson to measure the sky positions of the two stars and the inclination of the $\sim$ 2 milliarcsecond orbit. We determine that the two stars have m…

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-11 09:26:05

The properties of primordially-seeded black holes and their hosts in the first billion years: implications for JWST
Pratika Dayal, Roberto maiolino
https://arxiv.org/abs/2506.08116

The properties of primordially-seeded black holes and their hosts in the first billion years: implications for JWST
James Webb Space Telescope (JWST) observations have opened a tantalising new window onto possible black holes as early as redshifts of $z \sim 10.4$. These show a number of puzzling properties including unexpectedly massive black holes in place by $z \sim 10$ and inexplicably high black hole-to-stellar mass ratios of $M_{\rm BH}/M_*\geq 0.1$. These pose a serious challenge for "astrophysical" seeding and growth models that we aim to explain with ``cosmological" primordial black holes (PBHs) in …

@arXiv_csRO_bot@mastoxiv.page
2025-06-04 14:01:29

This https://arxiv.org/abs/2502.01536 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

VR-Robo: A Real-to-Sim-to-Real Framework for Visual Robot Navigation and Locomotion
Recent success in legged robot locomotion is attributed to the integration of reinforcement learning and physical simulators. However, these policies often encounter challenges when deployed in real-world environments due to sim-to-real gaps, as simulators typically fail to replicate visual realism and complex real-world geometry. Moreover, the lack of realistic visual rendering limits the ability of these policies to support high-level tasks requiring RGB-based perception like ego-centric navi…

@arXiv_astrophHE_bot@mastoxiv.page
2025-06-13 09:19:10

Evolution of QPO During Discovery Outburst of MAXI J1834-021: Estimation of Intrinsic Parameters from Spectro-Temporal Study
Dipak Debnath, Hsiang-Kuang Chang
https://arxiv.org/abs/2506.10267

Evolution of QPO During Discovery Outburst of MAXI J1834-021: Estimation of Intrinsic Parameters from Spectro-Temporal Study
The Galactic transient black hole candidate (BHC) MAXI~J1834-021 was detected for the first time by MAXI/GSC on February 05, 2023 and it was active for next $\sim 10$~months. A monotonic evolution of low-frequency QPOs from higher to lower frequencies is observed in the middle-phase of the outburst. We study this evolution of the QPO with the propagating oscillatory shock (POS) model, and it suggests the presence of a receding shock. The POS model fit also estimates the mass of the source to be…

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-11 09:54:15

Fading in the Flow: Suppression of cold gas growth in expanding galactic outflows
Alankar Dutta, Prateek Sharma, Max Gronke
https://arxiv.org/abs/2506.08545

Fading in the Flow: Suppression of cold gas growth in expanding galactic outflows
Multiwavelength observations reveal multiphase outflows that play a crucial role in redistributing gas and metals in and around galaxies. Theoretical modelling of such multiphase outflows often employs wind tunnel simulations of a spherical cold ($\sim 10^4 \ \rm K$) cloud facing a uniform hot ($\sim 10^6\ \rm K$) wind. However, outflows are naturally expanding and wind conditions change downstream -- a crucial aspect overlooked in most idealized simulations. To address this, we examine how an …

@arXiv_astrophHE_bot@mastoxiv.page
2025-07-10 09:43:41

Machine-learning correction for the calorimeter saturation of cosmic-rays ions with the Dark Matter Particle Explorer: towards the PeV scale
Andrea Serpolla, Andrii Tykhonov, Paul Coppin, Manbing Li, Andrii Kotenko, Enzo Putti-Garcia, Hugo Boutin, Mikhail Stolpovskiy, Jennifer Maria Frieden, Chiara Perrina, Xin Wu
https://arxiv.…

Machine-learning correction for the calorimeter saturation of cosmic-rays ions with the Dark Matter Particle Explorer: towards the PeV scale
The Dark MAtter Particle Explorer (DAMPE) instrument is a space-born cosmic-ray detector, capable of measuring ion fluxes up to $\sim$500 TeV/n. This energy scale is made accessible through its calorimeter, which is the deepest currently operating in orbit. Saturation of the calorimeter readout channels start occurring above $\sim$100 TeV of incident energy, and can significantly affect the primary energy reconstruction. Different techniques, analytical and machine-learning based, have been dev…

@arXiv_csRO_bot@mastoxiv.page
2025-06-03 08:07:23

ADEPT: Adaptive Diffusion Environment for Policy Transfer Sim-to-Real
Youwei Yu, Junhong Xu, Lantao Liu
https://arxiv.org/abs/2506.01759 https://

ADEPT: Adaptive Diffusion Environment for Policy Transfer Sim-to-Real
Model-free reinforcement learning has emerged as a powerful method for developing robust robot control policies capable of navigating through complex and unstructured environments. The effectiveness of these methods hinges on two essential elements: (1) the use of massively parallel physics simulations to expedite policy training, and (2) an environment generator tasked with crafting sufficiently challenging yet attainable environments to facilitate continuous policy improvement. Existing metho…

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-11 10:00:45

The detection of spatially resolved protosteller outflows and episodic jets in the outer Galaxy
Toki Ikeda, Takashi Shimonishi, Natsuko Izumi, Hiroyuki Kaneko, Satoko Takahashi, Kei E. I. Tanaka, Kenji Furuya, Chikako Yasui
https://arxiv.org/abs/2506.08601

The detection of spatially resolved protosteller outflows and episodic jets in the outer Galaxy
We present the first detection of spatially resolved protostellar outflows and jets in the outer Galaxy. We observed five star-forming regions in the outer Galaxy (Sh 2--283, NOMF05-16/19/23/63; galactocentric distance = 15.7--17.4 kpc) with the Atacama Large Millimeter/submillimeter Array (ALMA). Towards Sh 2--283, we have detected distinct outflow ($\sim$5--50 km s$^{-1}$) and jet components ($\sim$50--100 km s$^{-1}$) associated with the protostar in CO(3--2) emission. The outflows and jets …

@arXiv_astrophSR_bot@mastoxiv.page
2025-06-10 08:35:52

Anomalously fast core and envelope rotation in red giants
Siddharth Dhanpal, Othman Benomar, Shravan Hanasoge, Jim Fuller
https://arxiv.org/abs/2506.06415 …

Anomalously fast core and envelope rotation in red giants
Red giants undergo dramatic and complex structural transformations as they evolve. Angular momentum is transported between the core and envelope during this epoch, a poorly understood process. Here, we infer envelope and core rotation rates from Kepler observations of $\sim$1517 red giants. While many measurements are consistent with the existing studies, our investigation reveals systematic changes in the envelope-to-core rotation ratio and we report the discovery of anomalies such as clump st…

@arXiv_csRO_bot@mastoxiv.page
2025-06-10 17:29:49

This https://arxiv.org/abs/2506.04147 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

SLAC: Simulation-Pretrained Latent Action Space for Whole-Body Real-World RL
Building capable household and industrial robots requires mastering the control of versatile, high-degree-of-freedom (DoF) systems such as mobile manipulators. While reinforcement learning (RL) holds promise for autonomously acquiring robot control policies, scaling it to high-DoF embodiments remains challenging. Direct RL in the real world demands both safe exploration and high sample efficiency, which are difficult to achieve in practice. Sim-to-real RL, on the other hand, is often brittle du…

@arXiv_astrophHE_bot@mastoxiv.page
2025-06-09 08:49:42

Detection of multiple X-ray quasi-periodic oscillations in IGR J19294 1816 with Insight-HXMT
Wen Yang, Wei Wang
https://arxiv.org/abs/2506.05771 https://…

Detection of multiple X-ray quasi-periodic oscillations in IGR J19294+1816 with Insight-HXMT
We report the timing results with Insight-HXMT observations of X-ray binary IGR J19294+1816 during its 2019 Type I outburst at the decline phase shortly following its peak. We analyze the light curves and power density spectrum (PDS) of the 2019 observations and reveal a peak at approximately $ν_{NS} \sim 80.2$ mHz, corresponding to X-ray pulsations from the neutron star. In addition, a significant quasi-periodic oscillation (QPO) feature is observed at around $ν_{QPO} \sim 30.2$ mHz from 10-…

@arXiv_astrophHE_bot@mastoxiv.page
2025-07-08 12:48:10

Insights from the "Red devil" AT 2022fpx: A dust-reddened TDE family excluded by their apparent red color?
Zheyu Lin, Ning Jiang, Yibo Wang, Xu Kong, Shifeng Huang, Zesen Lin, Chen Qin, Tianyu Xia
https://arxiv.org/abs/2507.04834

Insights from the "Red devil" AT 2022fpx: A dust-reddened TDE family excluded by their apparent red color?
We report unnoticed but intriguing features in the peculiar nuclear transient AT 2022fpx, and investigate its type. These features include the constantly red optical color of $g-r>0$, stable soft X-ray flare ($kT\sim100$ eV) in the past $\sim$550 days, prominent mid-infrared echo peaked at $\sim$$10^{43.3}$ erg s$^{-1}$ and the confirmation of a weak AGN by weak flares in pre-event WISE mid-infrared light curves with no contemporary optical, radio or X-ray counterparts. The combination of the o…

@arXiv_astrophHE_bot@mastoxiv.page
2025-07-08 11:58:10

A systematic study of binary neutron star merger rate density history using simulated gravitational wave and short gamma-ray burst observations
Yun-Fei Du, Emre Seyit Yorgancioglu, Shu-Xu Yi, Tian-Yong Cao, Shuang-Nan Zhang
https://arxiv.org/abs/2507.04019

A systematic study of binary neutron star merger rate density history using simulated gravitational wave and short gamma-ray burst observations
Measuring the merger rate density history of binary neutron stars (BNS) can greatly aid in understanding the history of heavy element formation in the Universe. Currently, second-generation Gravitational Wave (GW) detectors can only measure the BNS merger rate density history at low redshifts ($z$ $\sim$ 0.1). Short gamma-ray bursts (sGRBs) may trace the BNS merger to higher redshifts ($z$ $\sim$ 3). However, not all BNS mergers result in sGRBs, and it is not certain that all sGRBs originate fr…

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-12 09:26:11

Counterculture Stars: Slow and Retrograde Stars with Low-Alpha Disk Abundances
Carrie Filion, Michael S. Petersen, Danny Horta, Kathryne J. Daniel, Madeline Lucey, Adrian M. Price-Whelan
https://arxiv.org/abs/2506.09927

Counterculture Stars: Slow and Retrograde Stars with Low-Alpha Disk Abundances
The Milky Way is home to a thin disk that can be defined via kinematics and/or elemental abundances. The elemental abundance-defined thin disk, also called the low-alpha disk, is generally thought to be comprised of stars on planar, circular orbits that approximate the circular velocity curve. While this is an apt description for the majority of stars with thin-disk-like abundances, there are a number of interesting exceptions. In this analysis, we identify and investigate $\sim 70$ stars with …

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-11 09:46:55

The central spectra of massive star-forming galaxies
Jaimie R. Sheil, Michael J. I . Brown, Virginia A. Kilborn, Michelle E. Cluver, Thomas Jarrett
https://arxiv.org/abs/2506.08474

The central spectra of massive star-forming galaxies
We have examined the nuclear spectra of very massive star-forming galaxies at $z \sim 0$ to understand how they differ from other galaxies with comparable masses, which are typically passive. We selected a sample of 126 nearby massive star-forming galaxies ($<100~{\rm Mpc}$, $10^{11.3}~\rm{M_\odot} \leq M_{\rm stellar} \leq 10^{11.7}~\rm{M_\odot}$, $1 ~{\rm M_\odot~yr^{-1}}< {\rm SFR} <13 ~{\rm M_\odot~yr^{-1}}$) from the 2MRS-Bright WXSC catalogue. LEDA morphologies indicate at least 63\% of o…

@arXiv_astrophHE_bot@mastoxiv.page
2025-07-11 09:14:01

IXPE view of the Sco-like source GX 349 2 in the normal branch
Fabio La Monaca, Anna Bobrikova, Juri Poutanen, Francesco Coti Zelati, Maura Pilia, Alexandra Veledina, Matteo Bachetti, Vladislav Loktev, Fei Xie
https://arxiv.org/abs/2507.07163

IXPE view of the Sco-like source GX 349+2 in the normal branch
We present a detailed spectropolarimetric study of the Sco-like Z-source GX 349+2, simultaneously observed with the Imaging X-ray Polarimetry Explorer (IXPE) and Nuclear Spectroscopic Telescope Array (NuSTAR). During the observations GX 349+2 was found mainly in the normal branch. A model-independent polarimetric analysis yields a polarisation degree of $1.1\% \pm 0.3\%$ at a polarisation angle of $29° \pm 7°$ in the 2--8 keV band, with ${\sim}4.1σ$ confidence level significance. No variabil…

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-30 07:57:50

Synergies between Euclid, Roman and JWST Could Reveal Quasars at up to $z \sim$ 15
Muhammad A. Latif, Daniel J. Whalen
https://arxiv.org/abs/2506.21658 htt…

Synergies between Euclid, Roman and JWST Could Reveal Quasars at up to $z \sim$ 15
Although supermassive black holes (SMBHs) are found at the centers of most galaxies today, over 300 have now been discovered at $z >$ 6, including a $4 \times 10^7$ M$_{\odot}$ BH in UHZ1 at $z = 10.1$ and an $8\times10^7$ M$_{\odot}$ BH in GHZ9 at $z =$ 10.4. They are thought to form when 10$^4$ - 10$^5$ M$_{\odot}$ primordial stars die as direct-collapse black holes (DCBHs) at $z \sim$ 20 - 25. While studies have shown that DCBHs should be visible at birth at $z \gtrsim$ 20 in the near infrar…

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