低质量X射线双星中的准周期振荡(QPO)现象

The Observational Phenomena of Quasi-periodic Oscillation in Low-mass X-ray Binaries

本文系统地介绍了低质量X射线双星(LMXB)中的准周期振荡现象的主要观测事实。对建立理论模型起过主要作用的观测事实,以研究得较为仔细的三个源(GX5-1,CygX-2,ScoX-1)为例,做了比较详细的介绍。新近在QPO和低频噪声中发现,不同能量的光子到达地球的时间有差别,称为延时效应。本文对此做了概括的介绍。

The basic observational data of Quasi-periodic Oscillations (QPO) in Low-mass X-ray Binaries (LMXB) are described systematically in this paper. It is emphasized that the data have been of particular importance for the development of QPO theory, we mainly concern with three best-studied QPO sources: GX 6-1,Cyg X-2 and Sco X-1. The time lags in QPO and low-frequency noise (LFN) were detected two years ago, which may be important for further understanding the phenomena of QPO and are mentioned briefly.