89 citations · 145 across the 19 of their papers we have counts for
17 papers · 1 filter
Magnetic rigidity reveals the PeVatron acceleration region in SS 433
Jie Liao, Wancheng Xu, Lang Cui +10
PeVatrons are cosmic accelerators capable of driving particles to petaelectronvolt (PeV) energies. Recently, microquasar jets have emerged as compelling Galactic PeVatron candidate…
Discovery of a New Spectral Transition in Swift J0243.6+6124 in the Sub-Eddington Regime
Bo-Yan Chen, Shu Zhang, Qing-Cang Shui +9
We conduct a detailed spectral analysis of the Galactic ultraluminous X-ray pulsar Swift J0243.6+6124 in its sub-Eddington regime, using Insight-HXMT and NICER observations during…
Timing and spectral variability in 2S 1417-624 observed with Insight-HXMT
Qi Liu, Lingda Kong, Can Güngör +5
We present the results of the spectral and timing analyses of the accreting X-ray pulsar, 2S 1417-624, during the 2018 and 2021 outbursts with Insight-HXMT. We find that the pulse…
Physics of Strong Magnetism with eXTP
Mingyu Ge, Long Ji, Roberto Taverna +47
In this paper we present the science potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission, in its new configuration, for studies of strongly magnetized compact obj…
The enhanced X-ray Timing and Polarimetry mission -- eXTP for launch in 2030
Shuang-Nan Zhang, Andrea Santangelo, Yupeng Xu +155
In this paper we present the current status of the enhanced X-ray Timing and Polarimetry mission, which has been fully approved for launch in 2030. eXTP is a space science mission…
Insight-HXMT observations on thermonuclear X-ray bursts from 4U~1608--52 in 2022: the accretion rate dependent anisotropy of burst emission
Yu-Peng Chen, Shu Zhang, Long Ji +10
Thermonuclear X-ray bursts occur on the surface of an accreting neutron star (NS), and their characteristics and interplay with the surrounding circumstance could be a clue to unde…
Science objectives of the Einstein Probe mission
Weimin Yuan, Lixin Dai, Hua Feng +93
The Einstein Probe (EP) is an interdisciplinary mission of time-domain and X-ray astronomy. Equipped with a wide-field lobster-eye X-ray focusing imager, EP will discover cosmic X-…
A comprehensive study of type I (thermonuclear) bursts in the new transient SRGA J144459.2604207
Tao Fu, Zhaosheng Li, Yuanyue Pan +11
We report an analysis of Insight-HXMT observations of the newly discovered accreting millisecond pulsar SRGA J144459.2604207. During the outburst, detected in 2024 February by S…
A Systematic Study of Millihertz Quasiperiodic Oscillations in GS 1826-238
Hua Xiao, Long Ji, Sergey Tsygankov +3
We performed a systematic investigation of millihertz quasiperiodic oscillations (mHz QPOs) in the low-mass X-ray binary GS 1826238 observed with {\it NICER} and {\it Insight}-H…
A Phase-resolved View of "Heartbeat"-like variability in IGR J17091-3624 During the 2022 Outburst
Qing-Cang Shui, Shu Zhang, Jing-Qiang Peng +9
IGR J17091-3624, in addition to GRS 1915+105, is the only black hole X-ray binary that displays ``heartbeat"-like variability characterized by structured flares with high amplitude…
Phase-resolved Spectroscopy of Low-frequency Quasi-periodic Oscillations from the Newly Discovered Black Hole X-ray Binary Swift J1727.8-1613
Qing-Cang Shui, Shu Zhang, Jiang-Qiang Peng +14
Low-frequency quasi-periodic oscillations (LFQPOs) are commonly observed in X-ray light curves of black hole X-ray binaries (BHXRBs); however, their origin remains a topic of debat…
The influence of thermonuclear bursts on polar caps of accreting X-ray millisecond pulsar MAXI J1816-195
Long Ji, Mingyu Ge, Yupeng Chen +4
We report accretion-powered pulsations for the first time during thermonuclear bursts in hard X-rays, which were observed with Insight-HXMT in 2022 during the outburst of the accre…
Likely detection of magnetic field related LFQPO in the soft X-ray re-brightening of GRS~1915+105
Ling-Da Kong, Long Ji, Andrea Santangelo +3
Utilizing NICER observations, we present an analysis of the soft X-ray re-brightening event of GRS 1915+105 observed in 2021. During this event, we observed the emergence of a stab…
The First Polarimetric View on Quasi-Periodic Oscillations in a Black Hole X-ray Binary
Qingchang Zhao, Lian Tao, Hancheng Li +19
We present the first polarimetric analysis of Quasi-Periodic Oscillations (QPO) in a black hole binary utilizing \textit{IXPE} data. Our study focuses on Swift J1727.8--1613, which…
Rapid dimming followed by a state transition: a study of the highly variable nuclear transient AT 2019avd over 1000+ days
Yanan Wang, Dheeraj R. Pasham, Diego Altamirano +16
The tidal disruption of a star around a supermassive black hole (SMBH) offers a unique opportunity to study accretion onto a SMBH on a human-timescale. We present results from our…
Observations of GRO J1744-28 in quiescence with XMM-Newton
Victor Doroshenko, Valery Suleimanov, Sergey Tsygankov +3
We report on the deep observations of the "bursting pulsar" GRO J1744-28, which were performed with XMM-Newton and aimed to clarify the origin of its X-ray emission in quiescence.…
Investigation of the energy dependence of the orbital light curve in LS 5039
Z. Chang, S. Zhang, L. Ji +5
LS 5039 is so far the best studied -ray binary system at multi-wavelength energies. A time resolved study of its spectral energy distribution (SED) shows that above 1 keV its po…