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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.Qu1; F.J.Lu1; Y.Lu1; L.M.Song1; S.Zhang1; G.Q.Ding2; J.M.Wang1
2010-01-22
Source PublicationAstrophysical Journal
ISSN0004-637X
Volume710Issue:1Pages:836-942
Contribution Rank2
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.

KeywordAccretion 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
DOI10.1088/0004-637x/710/1/836
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000273850800065
Funding OrganizationNational 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:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/188
Collection射电天文研究室_高能天体物理研究团组
射电天文研究室
Corresponding AuthorJ.L.Qu
Affiliation1.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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