Short-term X-ray variability of black hole candidates: Ginga results

被引：3

作者：

Negoro, H ^{[1
]}

机构：

[1] RIKEN, Inst Phys & Chem Res, Wako, Saitama 35101, Japan

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 1999年 / 69卷 / 1-3期

关键词：

D O I：

10.1016/S0920-5632(98)00237-0

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The superposition technique is a new analysis method to obtain average properties of certain kinds of aperiodic time variations. Real average profiles of X-ray shots in Cyg X-l, GS 339-4, GS 2023+338 and GS 1124-68 in the hard state are obtained in detail by applying the technique to rapid time Variations of these sources observed by Ginga. The shot profiles obtained are consistent with structures of power spectral densities and phase (time) lags below a few Hz. Soft energy spectra of the S-ray shots are thought to be the origin of soft excess components in time-averaged energy spectra. The shot profiles imply that the X-ray shots arise from aperiodic mass accretion in the advection dominated disk. These results are briefly described.

引用

页码：344 / 347

页数：4

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