Correlation among quasi-periodic oscillation frequencies and quiescent-state duration in black hole candidate GRS 1915+105

被引:136
作者
Chakrabarti, SK [1 ]
Manickam, SG [1 ]
机构
[1] SN Bose Natl Ctr Basic Sci, Calcutta 700091, W Bengal, India
关键词
accretion; accretion disks; black hole physics; hydrodynamics; shock waves; stars : individual (GRS 1915+105); X-rays : stars;
D O I
10.1086/312512
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We discover a definite correlation between the frequency of the quasi-periodic oscillations (QPOs) in quiescent states and the duration of the quiescent state of the transient X-ray source GRS 1915+105. We find that while the QPO frequency can be explained by the oscillation of shocks in accretion flows, the switching of burst to quiescent states (and vice versa) and their duration earn be explained by assuming an outflow from the postshock region. The duration of the quiescent state is inversely related to the QPO frequency. We derive this relation. We also find the correlation between the observed low (similar to 0.001-0.01 Hz) and the intermediate (1-10 Hz) QPO frequencies. Our analytical solutions are verified by analyzing several days of public domain data from the Rossi X-Ray Timing Explorer.
引用
收藏
页码:L41 / L44
页数:4
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