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题名: Disc-corona interaction in the heartbeat state of GRS 1915+105
作者: Yan, Shu-Ping; Ji, Li; Liu, Si-Ming; Mendez, Mariano; Wang, Na; Li, Xiang-Dong; Qu, Jin-Lu; Sun, Wei; Ge, Ming-Yu; Liao, Jin-Yuan; Niu, Shu; Ding, Guo-Qiang; Liu, Qing-Zhong
刊名: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期: 2018
卷号: 474, 期号:1, 页码:1214-1224
英文摘要: Timing analysis provides information about the dynamics of matter accreting on to neutron stars and black holes, and hence is crucial for studying the physics of the accretion flow around these objects. It is difficult, however, to associate the different variability components with each of the spectral components of the accretion flow. We apply several new methods to two Rossi X-ray Timing Explorer observations of the black hole binary GRS 1915+105 during its heartbeat state to explore the origin of the X-ray variability and the interactions of the accretion-flow components. We offer a promising window into the disc-corona interaction through analysing the formation regions of the disc aperiodic variabilities with different time-scales via comparing the corresponding transition energies of the amplitude-ratio spectra. In a previous paper, we analysed the Fourier power density as a function of energy and frequency to study the origin of the aperiodic variability, and combined that analysis with the phase lag as a function of frequency to derive a picture of the disc-corona interaction in this source. We here, for the first time, investigate the phase-lag as a function of energy and frequency, and display some interesting details of the disc-corona interaction. Besides, the results from the shape of amplitude-ratio spectrum and from several other aspects suggest that the quasi-periodic oscillation originates from the corona.
语种: 英语
WOS记录号: WOS:000424339500086
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17976
Appears in Collections:暗物质和空间天文实验室_期刊论文

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