THE ENERGY DEPENDENCE OF THE CENTROID FREQUENCY AND PHASE LAG OF THE QUASI-PERIODIC OSCILLATIONS IN GRS 1915+105

doi:10.1088/0004-637x/710/1/836

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	THE ENERGY DEPENDENCE OF THE CENTROID FREQUENCY AND PHASE LAG OF THE QUASI-PERIODIC OSCILLATIONS IN GRS 1915+105
	J.L.Qu 1; F.J.Lu 1; Y.Lu 1; L.M.Song 1; S.Zhang 1; G.Q.Ding2 ; J.M.Wang 1
	2010-01-22
Source Publication	Astrophysical Journal
ISSN	0004-637X
Volume	710 Issue:1 Pages:836-942
Contribution Rank	2
Abstract	We present a study of the centroid frequencies and phase lags of quasi-periodic oscillations (QPOs) as functions of photon energy for GRS 1915+105. It is found that the centroid frequencies of the 0.5-10 Hz QPOs and their phase lags are both energy dependent, and there exists an anticorrelation between the QPO frequency and phase lag. These new results challenge the popular QPO models, because none of them can fully explain the observed properties. We suggest that the observed QPO phase lags are partially due to the variation of the QPO frequency with energy, especially for those with frequency higher than 3.5 Hz.
Keyword	Accretion Accretion Disks Black Hole Physics Stars: Individual (Grs 1915+105) Stars: Oscillations
Subject Area	致密天体、高能和基础物理
DOI	10.1088/0004-637x/710/1/836
URL	查看原文
Indexed By	SCI
Language	英语
WOS ID	WOS:000273850800065
Funding Organization	National Basic Research Program of China (grant No.2009CB824800) ; the Natural Science Foundation of China(grant No. 10773017) ; Natural Science Foundation ofXinjiang Uygur Autonomous Region of China (grant No.200821164) ; the Program of the Light in Chinese WesternRegion (LCWR ; grant No. LHXZ 200802).
Citation statistics	Cited Times:39[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/188
Collection	射电天文研究室_已撤销团组_高能天体物理研究团组射电天文研究室
Corresponding Author	J.L.Qu
Affiliation	1.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), 19B Yuquan Road, Beijing 100049, China 2.Urumqi Observatory, NAOC, 40-5 South Beijing Road, Urumqi, Xinjiang 830011, China
Recommended Citation GB/T 7714	J.L.Qu,F.J.Lu,Y.Lu,et al. THE ENERGY DEPENDENCE OF THE CENTROID FREQUENCY AND PHASE LAG OF THE QUASI-PERIODIC OSCILLATIONS IN GRS 1915+105[J]. Astrophysical Journal,2010,710(1):836-942.
APA	J.L.Qu.,F.J.Lu.,Y.Lu.,L.M.Song.,S.Zhang.,...&J.M.Wang.(2010).THE ENERGY DEPENDENCE OF THE CENTROID FREQUENCY AND PHASE LAG OF THE QUASI-PERIODIC OSCILLATIONS IN GRS 1915+105.Astrophysical Journal,710(1),836-942.
MLA	J.L.Qu,et al."THE ENERGY DEPENDENCE OF THE CENTROID FREQUENCY AND PHASE LAG OF THE QUASI-PERIODIC OSCILLATIONS IN GRS 1915+105".Astrophysical Journal 710.1(2010):836-942.

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