Attaining Spectral Energy Distributions With Sub-Percent Uncertainties: All-Sky DA White Dwarf Spectrophotometric Standard Stars For Large Telescopes And Surveys

This paper presents a project establishing thirty-two faint, all-sky DA white dwarfs as spectrophotometric standard stars with sub-percent uncertainties by validating fully radiative pure hydrogen models against observations, thereby providing an unprecedented ensemble of standards for large telescopes and surveys that complements the existing CALSPEC scale.

Abhijit Saha, Edward W. Olszewski, Benjamin M. Boyd, Thomas Matheson, Tim Axelrod, Gautham Narayan, Annalisa Calamida, Jay B. Holberg, Ivan Hubeny, Ralph C. Bohlin, Susana Deustua, Armin Rest, Jenna Claver, Sean Points, Christopher W. Stubbs, Elena Sabbi, John W. MackentyThu, 12 Ma🔭 astro-ph

On the angular localization of gravitational-wave signals by pulsar timing arrays

This paper provides a comprehensive analytical study of gravitational-wave signal localization by pulsar timing arrays, deriving expressions for sky localization precision that reveal how the interplay between pulsar-source angular proximity and distance measurement accuracy determines whether improvements stem from tighter distance constraints or the strategic addition of nearby pulsars.

Stephen R. TaylorThu, 12 Ma🔭 astro-ph

The Cosmological Simulation Code OpenGadget3 -- Implementation of Self-Interacting Dark Matter

This paper presents the public release of OpenGadget3, a cosmological hydrodynamical N-body code featuring a robust implementation of self-interacting dark matter that supports various elastic scattering cross-sections and two-species models, validated through accuracy tests and performance scaling.

Moritz S. Fischer, Marc Wiertel, Cenanda Arido, Yashraj Patil, Antonio Ragagnin, Klaus Dolag, Marcus Brüggen, Mathias Garny, Andrew Robertson, Kai Schmidt-HobergThu, 12 Ma🔭 astro-ph

CHRONOS Science Program

The CHRONOS paper proposes a next-generation cryogenic ground-based gravitational-wave observatory utilizing quantum non-demolition speed-meter technology to bridge the sub-Hz frequency gap, thereby enabling unprecedented long-duration tracking of compact binaries and precise constraints on the stochastic gravitational-wave background to advance astrophysics and cosmology.

Yuki Inoue (on behalf of CHRONOS collaboration), Mario Juvenal S Onglao III (on behalf of CHRONOS collaboration), Vivek Kumar (on behalf of CHRONOS collaboration), Daiki Tanabe (on behalf of CHRONOS collaboration)Thu, 12 Ma🔭 astro-ph

A Large-Area Optical Time Projection Chamber for Hard X-ray Polarimetry with Directional Imaging of Low-Energy Electron Recoils

This paper reports the successful development and testing of a large-area, optical-readout Time Projection Chamber that achieves high-precision directional imaging of low-energy electron recoils (10–60 keV), demonstrating its potential to extend X-ray polarimetry to higher energies for studying rapid astrophysical transients.

Davide Fiorina, Elisabetta Baracchini, Giorgio Dho, Paolo Soffitta, Samuele Torelli, David J. M. Marques, Enrico Costa, Sergio Fabiani, Fabio Muleri, Giovanni Mazzitelli, Atul PrajapatiMon, 09 Ma🔭 astro-ph

PyBird-JAX: Accelerated inference in large-scale structure with model-independent emulation of one-loop galaxy power spectra

The paper introduces PyBird-JAX\texttt{PyBird-JAX}, a differentiable, JAX-based framework that utilizes neural network emulators to accelerate one-loop EFTofLSS galaxy power spectrum calculations by 3–4 orders of magnitude while maintaining high accuracy, thereby enabling rapid and efficient cosmological inference for upcoming large-scale structure surveys.

Alexander Reeves, Pierre Zhang, Henry ZhengMon, 09 Ma🔭 astro-ph

A High Efficiency Superconducting On-chip Filterbank with Directional Filters for Integral Field Units in the Sub-millimeter Regime

This paper demonstrates a high-efficiency superconducting on-chip filterbank for sub-millimeter integral field units using directional filters, achieving an average peak coupling efficiency of 75% across the 125–220 GHz range.

Louis H. Marting (Ton), Kenichi Karatsu (Ton), Leon G. G. Olde Scholtenhuis (Ton), Shahab O. Dabironezare (Ton), Alejandro Pascual Laguna (Ton), Arend Moerman (Ton), David J. Thoen (Ton), A. J. (Ton), van der Linden, Akira Endo, Jochem J. A. BaselmansMon, 09 Ma🔭 astro-ph

Searching for precessing binary systems with mode-by-mode filtering and marginalization

This paper introduces a novel search framework for precessing binary black hole systems in LIGO-Virgo-KAGRA data that utilizes mode-by-mode filtering, machine learning-based template reduction, and marginalization over harmonic signal-to-noise ratios to overcome the computational and statistical challenges of spin precession, ultimately increasing the sensitive search volume by approximately 10%.

Zihan Zhou, Digvijay Wadekar, Javier Roulet, Oryna Ivashtenko, Tejaswi Venumadhav, Tousif Islam, Ajit Kumar Mehta, Jonathan Mushkin, Mark Ho-Yeuk Cheung, Barak Zackay, Matias ZaldarriagaMon, 09 Ma🔭 astro-ph

Generation of Imaging Air Cherenkov Telescope images using Diffusion Models

This paper demonstrates that score-based diffusion models outperform Wasserstein GANs in generating high-fidelity, analysis-ready monoscopic images of both gamma-ray and proton air showers for Imaging Air Cherenkov Telescopes, establishing them as the first viable surrogate models for efficient instrument response generation and optimization.

Christian Elflein, Stefan Funk, Jonas Glombitza, Vinicius Mikuni, Benjamin Nachman, Lark WangMon, 09 Ma🔭 astro-ph

SwinYNet: A Transformer-based Multi-Task Model for Accurate and Efficient FRB Search

This paper introduces SwinYNet, a transformer-based multi-task model that achieves highly accurate and efficient Fast Radio Burst detection, segmentation, and parameter estimation directly from time-frequency data without de-dispersion, demonstrating superior performance over existing tools and enabling real-time, large-scale radio surveys on consumer-grade hardware.

Yunchuan Chen, Shulei Ni, Chan Li, Jianhua Fang, Dengke Zhou, Huaxi Chen, Yi Feng, Pei Wang, Chenwu Jin, Han Wang, Bijuan Huang, Xuerong Guo, Donghui Quan, Di LiMon, 09 Ma🔭 astro-ph

Case study of a national-level academic conference organised in hybrid mode at low cost

This paper presents a case study of the Astronomical Society of Australia's 2025 Annual Scientific Meeting, detailing the low-cost, hybrid organizational strategies, technical setups, and operational procedures employed to successfully integrate online and in-person attendance while sharing key lessons for future conference organizers.

Violet M. Harvey, Simon Lee, Bruce Dawson, Sabrina Einecke, Gavin RowellMon, 09 Ma🔭 astro-ph

SuperSNEC: Fast and Accurate Light Curve Production for Large Hydrodynamic Model Grids Using Adaptive Gridding

The paper introduces SuperSNEC, an accelerated version of the SuperNova Explosion Code that utilizes adaptive gridding and solver optimizations to generate accurate supernova light curves for large model grids in under two seconds per model, achieving high fidelity with low-resolution simulations and successfully reproducing observed events like SN 2020oi without requiring additional power sources.

Christoffer Fremling, K-Ryan HindsMon, 09 Ma🔭 astro-ph