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A timing view of the heartbeat state of GRS 1915+105
Yan, SP; Ji, L; Mendez, M; Liu, SM; Wang, N; Li, XD; Ge, MY; Liao, JY; Niu, S; Qu, JL; Ding, GQ; Liu, QZ; Sun, W; Ge MY(葛明玉); Liao JY(廖进元); Qu JL(屈进禄)
2017
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
EISSN1365-2966
Volume465Issue:2Pages:1926-1933
SubtypeArticle
AbstractWe present a timing analysis of two Rossi X-ray Timing Explorer observations of the micro-quasar GRS 1915+ 105 during the heartbeat state. The phase-frequency-power maps show that the intermediate-frequency aperiodic X-ray variability weakens as the source softens in the slow rise phase, and when the quasi-periodic oscillation disappears in the rise phase of the pulse of the double-peaked class, its sub-harmonic is still present with a hard phase lag. In the slow rise phase, the energy-frequency-power maps show that most of the aperiodic variability is produced in the corona, and may also induce the aperiodic variability observed at low energies from an accretion disc, which is further supported by the soft phase lag especially in the intermediate-frequency range (with a time delay up to 20 ms). In the rise phase of the pulse, the low-frequency aperiodic variability is enhanced significantly and there is a prominent hard lag (with a time delay up to 50 ms), indicating that the variability is induced by extension of the disc towards small radii as implied by the increase in flux and propagates into the corona. However, during the hard pulse of the double-peaked class, the variability shows no significant lag, which may be attributed to an optically thick corona. These timing results are generally consistent with the spectral results presented by Neilsen, Remillard & Lee which indicated that the slow rise phase corresponds to a local Eddington limit and the rise phase of the pulse corresponds to a radiation pressure instability in the disc.
Keywordaccretion, accretion discs black hole physics X-rays: binaries X-rays: individual GRS 1915+105
DOI10.1093/mnras/stw2916
WOS KeywordQUASI-PERIODIC OSCILLATIONS ; BLACK-HOLE CANDIDATES ; X-RAY BINARIES ; TIME-LAGS ; PHASE-LAG ; XTE J1550-564 ; CYGNUS X-1 ; GRS-1915+105 ; FREQUENCY ; VARIABILITY
Indexed BySCI ; ADS
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000393785500047
ADS Bibcode2017MNRAS.465.1926Y
ADS URLhttps://ui.adsabs.harvard.edu/abs/2017MNRAS.465.1926Y
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2017MNRAS.465.1926Y/citations
AXRIV CODE1611
inspireid1497473
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:5 [INSPIRE]
Cited Times:6 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/284848
Collection粒子天体物理中心
理论物理室
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Yan, SP,Ji, L,Mendez, M,et al. A timing view of the heartbeat state of GRS 1915+105[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,465(2):1926-1933.
APA Yan, SP.,Ji, L.,Mendez, M.,Liu, SM.,Wang, N.,...&屈进禄.(2017).A timing view of the heartbeat state of GRS 1915+105.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,465(2),1926-1933.
MLA Yan, SP,et al."A timing view of the heartbeat state of GRS 1915+105".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 465.2(2017):1926-1933.
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