An IR, optical and X-ray study of the two state behaviour of GX 339-4
An IR, optical and X-ray study of the two state behaviour of GX 339-4
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对 GX 339-4 两种状态行为的红外、光学和 X 射线研究
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
P. Angebault
中科院分区：
文献类型：
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作者：
C. Motch;S. Ilovaisky;C. Chevalier;P. Angebault
我们回顾了从1981年3月到1984年5月对GX 339-4进行的相关红外、光学和X射线观测的结果。在软X射线状态下，物体不会显示出突出的光学和X射线变化。然而，在一次观测运行中，夜间到夜间的平滑光学变化为0.3等。相比之下，硬X射线状态的特征是在20毫秒到秒的时间尺度上强烈不稳定的光学和X射线波动，以及7到20秒的准周期振荡。光学对应物在硬态期间在IR中显得红得多。特别注意的是，硬软X射线的转变发生在1981年6月。讨论了红外-X射线能量分布的形状。这个“黑洞候选人”的不寻常的功能检查的框架内，目前的吸积理论。
We review results of correlated IR, optical and X-ray observations of GX 339-4 made from March 1981 through May 1984. In the soft X-ray state, the object does not show outstanding optical and X-ray variability. Night-to-night smooth optical variations of 0.3 magnitudes were however present during one observing run. In contrast, the hard X-ray state is characterised by strong erratic optical and X-ray fluctuations on time scales from 20 milliseconds to seconds, as well as 7 to 20 second quasi-periodic oscillations. The optical counterpart appears much redder in the IR during the hard state. Particular attention is drawn to the hard to soft X-ray transition which occured in June 1981. The shape of the IR to X-ray energy distribution is discussed. The unusual features of this ‘black hole candidate’ are examined in the framework of the current theories of accretion.