中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A statistical study on the low-frequency quasi-periodic oscillation amplitude spectrum and amplitude in GRS 1915+105

文献类型:期刊论文

作者Yan, Shu-Ping1,2; Ding, Guo-Qiang1; Wang, Na1; Qu, Jin-Lu3; Song, Li-Ming3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2013-09-01
卷号434期号:1页码:59-68
关键词accretion, accretion discs black hole physics X-rays: binaries X-rays: individual: GRS 1915+105
英文摘要A statistical study was made on both the energy dependence of the low-frequency quasi-periodic oscillation (QPO) amplitude (LFQPO amplitude spectrum) and the LFQPO amplitude from all the RXTE observations of GRS 1915+105. Based on the two-branch correlation of the LFQPO frequency and the hardness ratio, the observations that were suitable for evaluating the LFQPO amplitude spectrum were divided into two groups. According to a comparison between the radio and X-ray emissions, we deduced that the jets during the two groups of observations are very different. A negative correlation between the LFQPO frequency and the radio flux was found for one group. The LFQPO amplitude spectrum was fitted by a power law with an exponential cutoff in order to describe it quantitatively. It reveals that as the LFQPO frequency increases, the power law hardens. Furthermore, the cutoff energy first decreases, and then smoothly levels off. The fit also shows that the LFQPO amplitude spectra of the two groups are essentially the same, suggesting that the LFQPO does not originate from the jet. The LFQPO amplitude spectra are hard, indicating a possible origin of the LFQPO in the corona. As the LFQPO frequency increases, the LFQPO amplitude first increases and then decreases. The effects of the low-pass filter and the jet on the LFQPO amplitude are discussed.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]X-RAY BINARIES ; ACCRETION-EJECTION INSTABILITY ; LENS-THIRRING PRECESSION ; BLACK-HOLE CANDIDATES ; PHASE-LAG VARIABILITY ; RADIO-EMISSION ; RXTE OBSERVATIONS ; XTE J1550-564 ; TRANSIENT H1743-322 ; ENERGY-DEPENDENCE
收录类别SCI
语种英语
WOS记录号WOS:000323636800005
源URL[http://ir.xao.ac.cn/handle/45760611-7/485]  
专题高能天体物理研究团组
新疆天文台_射电天文研究室
新疆天文台_其它
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Yan, Shu-Ping,Ding, Guo-Qiang,Wang, Na,et al. A statistical study on the low-frequency quasi-periodic oscillation amplitude spectrum and amplitude in GRS 1915+105[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,434(1):59-68.
APA Yan, Shu-Ping,Ding, Guo-Qiang,Wang, Na,Qu, Jin-Lu,&Song, Li-Ming.(2013).A statistical study on the low-frequency quasi-periodic oscillation amplitude spectrum and amplitude in GRS 1915+105.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,434(1),59-68.
MLA Yan, Shu-Ping,et al."A statistical study on the low-frequency quasi-periodic oscillation amplitude spectrum and amplitude in GRS 1915+105".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 434.1(2013):59-68.

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来源:新疆天文台

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