3 papers
astro-ph.HE2025
Possible Coronal Geometry in the Hard and Soft State of Black Hole X-ray Binaries from MONK Simulations
Ningyue Fan, Cosimo Bambi, James F. Steiner +1
Understanding the coronal geometry in different states of black hole X-ray binaries is important for more accurate modeling of the system. However, it is difficult to distinguish d…
astro-ph.HE2025
X-ray reflection spectroscopy with improved calculations of the emission angle
Yimin Huang, Honghui Liu, Temurbek Mirzaev +10
The reflection spectrum produced by a cold medium illuminated by X-ray photons is not isotropic and its shape depends on the emission angle. In the reflection spectrum of an accret…
astro-ph.HE2024
NICER Spectral and Timing Analysis of 4U 163047 and its Heartbeat State
Ningyue Fan, James F. Steiner, Cosimo Bambi +3
We present a spectral and timing analysis of NICER observations of the black hole X-ray binary 4U 1630-47 from 2018 to 2024. We find relativistic reflection features in the hard an…