51 citations · 140 across the 10 of their papers we have counts for
11 papers
The fading superorbital clock of Hercules X-1 in its 2025--2026 extended low state
Zhenxuan Liao, Xinrui Tie, Yufeng Chi +1
We present two decades of X-ray monitoring of the eclipsing accreting pulsar Hercules X-1 with \textit{Fermi}/GBM, \textit{Swift}/BAT and \textit{MAXI}/GSC, centred on the extended…
Torque-dependent orbital modulation of X-ray pulsar Cen X-3
Zhenxuan Liao, Jiren Liu
Cen X-3 shows alternate spin-up/spin-down episodes lasting for tens of days. We study the orbital profiles and spectra of Cen X-3 during these spin-up/spin-down intervals, using lo…
Torque reversals and wind variations of X-ray pulsar Vela X-1
Zhenxuan Liao, Jiren Liu, Lijun Gou
The erratic spin history of Vela X-1 shows some continuous spin-up/spin-down trend over tens of days. We study the orbital profile and spectral property of Vela X-1 in these spin-u…
Detailed analysis on the reflection component for the black hole candidate MAXI J1348-630
Nan Jia, Xueshan Zhao, Lijun Gou +7
The black hole candidate MAXI J1348-630 was discovered on January 26th, 2019, with the Gas Slit Camera (GSC) on-board \textit{MAXI}. We report a detailed spectral analysis of this…
Estimating the spin of the black hole candidate MAXI J1659-152 with the X-ray continuum-fitting method
Ye Feng, Xueshan Zhao, Lijun Gou +6
As a transient X-ray binary, MAXI J1659-152 contains a black hole candidate as its compact star. MAXI J1659-152 was discovered on 2010 September 25 during its only known outburst.…
Torque reversal and orbital profile of X-ray pulsar OAO 1657-415
Zhenxuan Liao, Jiren Liu, Peter A. Jenke +1
OAO 1657-415 is an atypical supergiant X-ray binary among wind-fed and disk-fed systems, showing alternate spin-up/spin-down intervals lasting on the order of tens of days. We stud…
The Spin of New Black Hole Candidate: MAXI J1803-298 Observed by NuSTAR and NICER
Ye Feng, Xueshan Zhao, Yufeng Li +4
MAXI J1803-298, a newly-discovered Galactic transient and black hole candidate, was first detected by \emph{MAXI}/GSC on May 1st, 2021. In this paper, we present a detailed spectra…
Spectral Analysis of New Black Hole Candidate AT2019wey Observed by NuSTAR
Ye Feng, Xueshan Zhao, Lijun Gou +7
AT2019wey is a new galactic X-ray binary that was first discovered as an optical transient by the Australia Telescope Large Area Survey (ATLAS) on December 7, 2019. AT2019wey consi…
Disk vs wind accretion in X-ray pulsar GX 301-2
Jiren Liu, Long Ji, Peter A. Jenke +8
GX 301-2 provides a rare opportunity to study both disk and wind accretion in a same target. We report Insight-HXMT observations of the spin-up event of GX 301-2 happened in 2019 a…
Estimating the black hole spin for the X-ray binary MAXI J1820+070
Xueshan Zhao, Lijun Gou, Yanting Dong +6
MAXI J1820+070 is a newly-discovered black hole X-ray binary, whose dynamical parameters, namely the black hole mass, the inclination angle and the source distance, have been estim…
Spectral evidence of an accretion disk in wind-fed X-ray pulsar Vela X-1 during an unusual spin-up period
Zhenxuan Liao, Jiren Liu, Xueying Zheng +1
In classical supergiant X-ray binaries (SgXBs), the Bondi-Hoyle-Lyttleton wind accretion was usually assumed, and the angular momentum transport to the accretors is inefficient. Th…