3 papers
astro-ph.HE2026
Long-term evolution of cyclotron resonant scattering features in the accreting pulsar Vela X-1: A pulse-to-pulse approach
Yu-Jia Du, Peng-Ju Wang, Lorenzo Ducci +5
We investigated the long-term evolution of the cyclotron line energy, as well as the relationship between cyclotron line energy and luminosity in the high-mass X-ray binary Vela X-…
astro-ph.HE2025
QPOs in a highly magnetized ultra-compact X-ray binary 4U 1626-67
Zi-Yi Zhou, Long Ji, Ling-Da Kong +3
We report the detection of mHz quasi-periodic oscillations (QPOs) in four NuSTAR observations of 4U 1626-67 during its recent spin-down episode. By using a novel method based on th…
astro-ph.HE2025
Propeller effect in action: Unveiling quenched accretion in the transient X-ray pulsar 4U 0115+63
Hua Xiao, Sergey S. Tsygankov, Valery F. Suleimanov +3
The Be/X-ray pulsar 4U 0115+63 underwent a type II outburst in 2023. After the outburst, similar to the outbursts in 2015 and 2017, the source decayed into a quiescent state. Two o…