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astro-ph.HE2026

Relaxation of magnetically-confined mountains on accreting neutron stars through cross-field mass transport

Ryan Brunet, Andrew Melatos, Pedro Rossetto

Hydromagnetic instabilities modify the structure of a magnetically confined mountain on an accreting neutron star, once the accreted mass exceeds a critical value. Ideal magnetohyd…

astro-ph.HE2026

CubeSats Reach the Millisecond X-Ray Domain: Crab Pulsar Timing with SpIRIT/HERMES

Wladimiro Leone, R. Mearns, T. Di Salvo +70

The High Energy Rapid Modular Ensemble of Satellites (HERMES) instrument is a compact X/-ray spectrometer operating on board the 6U (11 kg) SpIRIT CubeSat. The payload is partic…

astro-ph.HE2026★ 4 cited

Searching for Anisotropy in the Gravitational Wave Background Using the Parkes Pulsar Timing Array

Yiqin Chen, Shi-Yi Zhao, Zhi-Zhang Peng +17

In recent years, several pulsar timing array collaborations have reported evidence for a nanohertz gravitational wave background (GWB). Such a background signal could be produced b…

astro-ph.HE2026

An infrared echo from a circumstellar disk in the hydrogen- and helium-poor SN 2024aecx

Samaporn Tinyanont, Kittipong Wangnok, Jennifer E. Andrews +34

We present near-infrared (NIR) spectroscopy of the hydrogen- and helium-poor (Type Ic) supernova (SN) 2024aecx, which displays a strong NIR excess emerging 32 days post peak. SN 20…

astro-ph.HE2026

The Deeper, Wider, Faster programme's first DECam optical data release

James Freeburn, Jeff Cooke, Anais Möller +17

The transient and variable optical sky is relatively poorly characterised on fast (1hr) timescales. With the Dark Energy Camera (DECam), the Deeper, Wider, Faster programme…

astro-ph.HE2025★ 1 cited

Frequency- and phase-resolved polarimetry of millisecond pulsars and its application to timing

Małgorzata Curyło, Andrew Zic, Shuangqiang Wang +16

Pulsar timing is used for a variety of applications including tests of fundamental physics, probing the structure of neutron stars, and detecting nanohertz gravitational waves. Dev…