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Physics Preprint PDF DOI

Semi-analytic bounds on axion-like-particle supernovae emission

Ana Luisa Foguel, Eduardo S. Fraga · 2026

Core-collapse supernovae provide natural laboratories for the production of new light particles. In particular, axion-like particles (ALPs) can be constrained via SN1987A cooling arguments. However, s…

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Physics Preprint PDF DOI

Magnetic reconnection in five-dimensional Kerr black hole

Ikhtiyor Eshtursunov, Sanjar Shaymatov · 2026

In this paper, we employ the Comisso-Asenjo magnetic reconnection (MR) mechanism to investigate energy extraction from a rapidly rotating five-dimensional Kerr black hole (BH) with single- and two-rot…

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Physics Preprint PDF DOI

Foreground Mitigation and Power Spectrum Analysis for Tianlai Full-Sky 21 cm Survey Observation

Yikai Deng, Shifan Zuo, Jixia Li, Yougang Wang, Xuelei Chen · 2026

We present a comprehensive analysis of the 21 cm intensity mapping (IM) data from the Tianlai Cylinder Pathfinder Array (TCPA), focusing on multi-scale foreground mitigation and three-dimensional powe…

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Physics Preprint PDF DOI

Agnostically decoding gravitational wave model deficiencies in GWTC-3

Guillaume Dideron, Suvodip Mukherjee, Luis Lehner · 2026

Gravitational Wave (GW) data bring an exceptional avenue to test the underlying models of coalescing compact objects. In the regime of strong gravity and high curvature, they allow the exploration of …

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Physics Preprint PDF DOI

Outer-Crust Equations of State for Neutron Stars

P.S. Koliogiannis, N. Paar · 2026

We construct and systematically assess four outer-crust equations of state based on relativistic nuclear mass models and a machine-learning mass table. Our aim is to quantify the sensitivity of the eq…

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Physics Preprint PDF DOI

Energy-Dependent Polarization Angle Variability as a Robust Diagnostic for Blazar Flaring Mechanisms

Haocheng Zhang, Benjamin de Jonge, Manel Errando, Xiaocan Li, Fan Guo · 2026

Identifying the physical mechanism driving blazar flares remains a central challenge in high-energy astrophysics. We show that the energy dependence of the standard deviation of the polarization angle…

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Physics Preprint PDF DOI

Continuum contribution to charged-current absorption of low-energy $\nu_e$ on $^{40}$Ar

Steven Gardiner, Pablo Barham Alzas, Alexis Nikolakopoulos, Luca H. Abu El-Haj, Natalie Jachowicz, Vishvas Pandey · 2026

Accurate modeling of the absorption of tens-of-MeV $\nu_e$ on $^{40}$Ar is needed to enable measurements of astrophysical neutrinos using large liquid argon time projection chamber (LArTPC) detectors,…

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Physics Preprint PDF DOI

A cm-wave quantum noise limited resonant superconducting parametric amplifier

V. Gilles, T. Sweetnam, B. Mohammadian, M. A. McCulloch, L. Piccirillo · 2026

Superconducting Parametric Amplifiers (SPAs) have seen great interest in recent years due to their high gain and quantum limited noise performance. Among these amplifiers, resonant SPAs have been wide…

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Physics Preprint PDF DOI

Transient Parity Violation during Inflation: Implications for PTA Gravitational Waves

Gianmassimo Tasinato · 2026

We investigate the consequences of a transient phase of enhanced parity violation during inflation. Modeling this phase through a time-localized Chern--Simons-like coupling, we show that it amplifies …

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Physics Preprint PDF DOI

The Phenomenological Classification of TESS Eclipsing Binaries

Shi-Qi Liu, Kai Li, Xiao-Dian Chen, Li-Heng Wang · 2026

Eclipsing binaries are crucial astrophysical laboratories for studying stellar parameters and evolutionary processes. In this study, we constructed a machine-learning-based model for systematic phenom…

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Physics Preprint PDF DOI

Scaling in Supersonic Turbulence: Energy Spectra and Fluxes using High-Fidelity Direct Numerical Simulations

Harshit Tiwari, Dhananjay Singh, Mahendra K. Verma, Rajesh Ranjan · 2026

Supersonic turbulence is vital to astrophysical and high-speed engineering flows, yet its energy transfer mechanisms remain poorly understood. We present high-resolution ($1024^3$) direct numerical si…

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Physics Preprint PDF DOI

The $\beta$-Dependence of Particle Spectra in Relativistic Turbulent Reconnection

Shi-Min Liang, Jian-Fu Zhang, Nian-Yu Yi · 2026

We perform numerical simulations of particle acceleration in relativistic, self-driven turbulent magnetic reconnection using the MHD-PIC method. We systematically investigate the dependence of the non…

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Physics Preprint PDF DOI

Parker Solar Probe Observations of Compound Reconnection Exhaust Boundaries and Mirror-Mode Structures in the Near-Sun Heliospheric Current Sheet

Weijie Sun, Tai Phan, Jia Huang, Yi-Hsin Liu, James A. Slavin, Orlando Romeo, Mingzhe Liu, Vassilis Angelopoulos, Ali Rahmati, Davin Larson, Nehpreet Walia, Stuart Bale, Marc Pulupa, Jiutong Zhao, Roberto Livi · 2026

Magnetic reconnection is a fundamental physical process that can drive rapid conversion of magnetic energy into plasma bulk flows, thermal heating, and particle acceleration in space and astrophysical…

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Physics Preprint PDF DOI

Charge diffusion and modulation transfer function in a Nancy Grace Roman Space Telescope detector

Emily Macbeth, Katherine Laliotis, Christopher M. Hirata, Christopher Merchant · 2026

The Nancy Grace Roman Space Telescope (Roman) is an observatory motivated by the search to understand dark energy, exoplanets, and general astrophysics. Roman will bring unprecedented amounts of preci…

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Physics Preprint PDF DOI

Properties of black hole mergers in disks of active galactic nuclei

Hiromichi Tagawa, Zoltan Haiman, Bence Kocsis · 2026

Ground-based gravitational wave (GW) observatories have detected approximately 200 binary black hole (BH) mergers. The astrophysical origin of these events are debated, with evidence suggesting that a…

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Physics Preprint PDF DOI

Collective neutrino-antineutrino pair oscillations

Shih-Jie Huang, Meng-Ru Wu · 2026

In dense neutrino gas, pairing correlations between neutrinos and antineutrinos with opposite momenta can be nonzero in generalized neutrino quantum kinetic equations at the mean-field level. In this …

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Physics Preprint PDF DOI

Intergalactic Magnetic Field constraints from detected very high-energy Gamma-Ray Bursts using the Cherenkov Telescope Array Observatory

Teneman Keita, Renaud Belmont, Thierry Stolarczyk · 2026

Defined as the magnetic field permeating cosmic voids, the Intergalactic Magnetic Field (IGMF) is thought to be a relic of the Big Bang, tracing a primordial magnetic seed at the origin of all astroph…

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Physics Preprint PDF DOI

Enabling real-time multi-messenger follow-up of transient events with Astro-COLIBRI

Bernardo Cornejo Avila, Sofia Bisero, Mickael Costa, Antoine Ciric, Ilja Jaroschewski, Weizmann Kiendrebeogo, Fabian Schussler · 2026

Time-domain astrophysics is a rapidly growing field focused on the study of transient phenomena such as Gamma-Ray Bursts (GRBs), Fast Radio Bursts (FRBs), supernovae, novae, and AGN flares. Their char…

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AI & Data Science Preprint PDF DOI

Plausible but Wrong: A case study on Agentic Failures in Astrophysical Workflows

Shivam Rawat, Lucie Flek · 2026

Agentic AI systems are increasingly being integrated into scientific workflows, yet their behavior under realistic conditions remains insufficiently understood. We evaluate CMBAgent across two workflo…

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Physics Preprint PDF DOI

Gauge Theoretic Signal Processing II: Zero-Latency Whitening for Early Warning Pipelines

James Kennington, Joshua Black, Zach Yarbrough, Yun-Jing Huang, Chad Hanna, Leo Tsukada, Amanda Baylor, Olivia Godwin, Prathamesh Joshi, Cody Messick, Surabhi Sachdev, Ron Tapia · 2026

Low-latency gravitational-wave search pipelines provide early-warning alerts for multimessenger astrophysical transients. Current pipelines whiten the data stream using acausal, linear-phase filters, …

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