A statistical study on the low-frequency quasi-periodic oscillation amplitude spectrum and amplitude in GRS 1915+105
作者： Shu-Ping Yan , Guo-Qiang Ding , Na Wang , Jin-Lu Qu , Li-Ming Song
DOI: 10.1093/MNRAS/STT968
关键词: Quasi-periodic oscillation 、 Accretion (meteorology) 、 Physics 、 Astrophysics 、 Power law 、 Low frequency 、 Oscillation 、 Amplitude 、 Spectral line 、 Cutoff
摘要: A statistical study was made on both the energy dependence of low-frequency quasi-periodic oscillation (QPO) amplitude (LFQPO spectrum) and LFQPO from all RXTE observations GRS 1915+105. Based two-branch correlation frequency hardness ratio, that were suitable for evaluating spectrum divided into two groups. According to a comparison between radio X-ray emissions, we deduced jets during groups are very different. negative flux found one group. The fitted by power law with an exponential cutoff in order describe it quantitatively. It reveals as increases, hardens. Furthermore, first decreases, then smoothly levels off. fit also shows spectra essentially same, suggesting does not originate jet. hard, indicating possible origin corona. As increases decreases. effects low-pass filter jet discussed.
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128.84.21.199
oxfordjournals.org参考文章(96)
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