Correlation Time Scales of the X-ray Flux in Low Mass X-ray Binaries

摘要：

Recent studies of several soft X-ray transients (SXTs) show that the X-ray flux at which the low/hard (LH)-to-high/soft (HS) state transition occurs in the rising phase of an outburst is nearly linearly correlated with the peak flux of the following (HS) state. By analyzing the data of the ASM on board the RXTE, we show that the flux correlation holds even after an outburst or flare reaches its flux peak. In GX 339-4, Aq1 X-1 and the quasi transient 4U 1705-44, the flux of the LH-to-HS state transition and the flux of the following HS state are positively correlated up to a time scale of 250 days, 40 days and 50 days following the corresponding LH-to-HS state transition, respectively. We discuss the implications of our study in the framework of a two- flow accretion geometry.

关键词： Accretion accretion disks--black hole physics—star individual (Aquila X-1, GX 339-4, 4U 1705-44)-stars neutron

作者: Y. X. Wu W. Yu T. P. Li

作者单位: Department of Engineering Physics & Center for Astrophysics, Tsinghua University, Beijing, China Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai, China Department of Engineering Physics, Department of Physics & Center for Astrophysics, Tsinghua Univers

会议类型: 国际会议

会议名称: 紧凑型物体的天体物理学国际会议(International Conference on Astrophysics of Compact Objects)

会议地点: 安徽黄山

会议语种:英文

页码: 331-333

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）