The correlation timescale of the X-ray flux during the outbursts of soft X-ray transients
The correlation timescale of the X-ray flux during the outbursts of soft X-ray transients
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软 X 射线瞬变爆发期间 X 射线通量的相关时间尺度
DOI:
10.1007/s11433-010-0013-5
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发表时间:
2010-05
期刊:
影响因子:
--
通讯作者:
Li TiPei
中科院分区:
文献类型:
--
作者:
Wu YuXiang;Yu WenFei;Li TiPei
Recent studies of black hole and neutron star low mass X-ray binaries (LMXBs) show a positive correlation between the X-ray flux at which the low/hard(LH)-to-high/soft(HS) state transition occurs and the peak flux of the following HS state. By analyzing the data from the All Sky Monitor (ASM) onboard the Rossi X-ray Timing Explorer (RXTE), we show that the HS state flux after the source reaches its HS flux peak still correlates with the transition flux during soft X-ray transient (SXT) outbursts. By studying large outbursts or flares of GX 339-4, Aql X-1 and 4U 1705-44, we have found that the correlation holds up to 250, 40, and 50 d after the LH-to-HS state transition, respectively. These time scales correspond to the viscous time scale in a standard accretion disk around a stellar mass black hole or a neutron star at a radius of ∼104–5Rg, indicating that the mass accretion rates in the accretion flow either correlate over a large range of radii at a given time or correlate over a long period of time at a given radius. If the accretion geometry is a two-flow geometry composed of a sub-Keplerian inflow or outflow and a disk flow in the LH state, the disk flow with a radius up to ∼105Rgwould have contributed to the nearly instantaneous non-thermal radiation directly or indirectly, and therefore affects the time when the state transition occurs.
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DOI:
10.1086/318954
发表时间:
2000-01
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
J. Homan;R. Wijnands;M. van der Klis;T. Belloni;J. van Paradijs;M. Klein-Wolt;R. Fender;M. Méndez-M.-Mén
通讯作者:
J. Homan;R. Wijnands;M. van der Klis;T. Belloni;J. van Paradijs;M. Klein-Wolt;R. Fender;M. Méndez-M.-Mén
影响因子:
1.4
作者:
M. Klis
通讯作者:
M. Klis
DOI:
10.1086/339167
发表时间:
2001-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
David M. Smith;W. Heindl;J. Swank
通讯作者:
David M. Smith;W. Heindl;J. Swank
影响因子:
6.5
作者:
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通讯作者:
G. Bisnovatyi-Kogan;S. Blinnikov
DOI:
10.1016/j.nuclphysa.2005.05.200
发表时间:
2006-07
期刊:
Nuclear Physics
影响因子:
--
作者:
Hendrik Schatz;K. E. Rehm
通讯作者:
Hendrik Schatz;K. E. Rehm