中国科学院机构知识库网格系统: 检索

Monte Carlo Simulations on Possible Collimation Effects of Outflows to Fan Beam Emission of Ultraluminous Accreting X-Ray Pulsars 期刊论文 OAI收割
ASTROPHYSICAL JOURNAL, 2022, 卷号: 941, 期号: 2, 页码: 126
作者: Hou, X; You, Y; Ji, L; Soria, R; Zhang, SN

|

收藏 | 浏览/下载：2/0 | 提交时间：2023/11/09

Spectral and Timing Analysis of the Black Hole Transient MAXI J1631-479 During its 2019 Outburst Observed with Insight-HXMT 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2022, 卷号: 22, 期号: 11, 页码: 115002
作者: Fu, Yu-Cong; Song, L. M.; Ding, G. Q.; Zhang, S. N.; Qu, J. L.

|

收藏 | 浏览/下载：3/0 | 提交时间：2023/11/10

accretion accretion disks stars: black holes X-rays: binaries

Quasars with highly accreting black holes: their X-ray properties and modified prescription of single-epoch mass 期刊论文 OAI收割
American Astronomical Society Meeting Abstracts, 2022, 卷号: 54, 期号: 6, 页码: 316.02D
作者: Maithil, Jaya; Brotherton, Michael; Shemmer, Ohad; Du, Pu; Wang, Jian-Min

|

收藏 | 浏览/下载：1/0 | 提交时间：2023/11/09

The spectral-timing analysis of Cygnus X-1 with Insight-HXMT 期刊论文 OAI收割
ASTRONOMY & ASTROPHYSICS, 2022, 卷号: 666, 页码: A172
作者: Zhou, M; Grinberg, V; Bu, QC; Santangelo, A; Cangemi, F

|

收藏 | 浏览/下载：1/0 | 提交时间：2023/11/09

X-rays binaries accretion accretion disks X-rays individuals Cygnus X-1 stars black holes

Spiral arms in broad-line regions of active galactic nuclei. I. Reverberation and differential interferometric signals of tightly wound cases 期刊论文 OAI收割
ASTRONOMY & ASTROPHYSICS, 2022, 卷号: 666, 页码: A86
作者: Wang, Jian-Min; Du, Pu; Songsheng, Yu-Yang; Li, Yan-Rong

|

收藏 | 浏览/下载：3/0 | 提交时间：2023/11/09

galaxies: active quasars: emission lines galaxies: nuclei Astrophysics - Astrophysics of Galaxies

An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文 OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者: HXMT

|

收藏 | 浏览/下载：47/0 | 提交时间：2022/02/08

accretion accretion disks black hole physics X-rays: binaries time Astrophysics - High Energy Astrophysical Phenomena Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.

Unifying neutron star sub-populations in the supernova fallback accretion model 期刊论文 iSwitch采集
Research in astronomy and astrophysics, 2019, 卷号: 19, 期号: 3, 页码: 12
作者: Liu, Bai-Sheng; Li, Xiang-Dong

收藏 | 浏览/下载：178/0 | 提交时间：2019/04/22

Accretion, accretion disks Stars: neutron, evolution, rotation, magnetic field, magnetars Pulsars: general

Unifying neutron star sub-populations in the supernova fallback accretion model 期刊论文 iSwitch采集
Research in astronomy and astrophysics, 2019, 卷号: 19, 期号: 3, 页码: 12
作者: Liu, Bai-Sheng; Li, Xiang-Dong

收藏 | 浏览/下载：178/0 | 提交时间：2019/04/22

Accretion, accretion disks Stars: neutron, evolution, rotation, magnetic field, magnetars Pulsars: general

Super-eddington accretion onto the galactic ultraluminous x-ray pulsar swift j0243.6+6124 期刊论文 iSwitch采集
The astrophysical journal, 2019, 卷号: 873, 期号: 1
作者: Tao,Lian; Feng,Hua; Zhang,Shuangnan; Bu,Qingcui; Zhang,Shu

收藏 | 浏览/下载：80/0 | 提交时间：2019/04/23

Accretion, accretion disks Magnetic fields Pulsars: individual (swift j0243.6+6124) Stars: neutron X-rays: binaries

Insight-HXMT Observations of Swift J0243.6+6124 during Its 20172018 Outburst 期刊论文 OAI收割
The Astrophysical Journal, 2019, 卷号: 879
作者: Zhang, Wei; Zhang, WanChang; Zhang, WenZhao; Zhang, Yi; Zhang, YiFei

|

收藏 | 浏览/下载：183/0 | 提交时间：2019/07/12

accretion accretion disks pulsars: individual: Swift J0243.6+6124 stars: distances stars: magnetic field X-rays: binaries Astrophysics - High Energy Astrophysical Phenomena