Reflection and noise in the low spectral state of GX 339-4
Reflection and noise in the low spectral state of GX 339-4
复制标题
GX 339-4 低光谱状态下的反射和噪声
DOI：
--
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
H Germany
中科院分区：
文献类型：
--
作者：
M. Revnivtsev;M. Gilfanov;E. R. Institute;Moscow;Russia.;Mpa;G. B. Muenchen;H Germany
我们分析了 1996{1997 年低光谱状态下 GX 339{4 的 RXTE/PCA 观测结果，表明其光谱和时间变化模式与 Cyg X-1 几乎相同。特别是，QPO 质心频率和频谱参数之间存在紧密的相关性。 QPO 质心频率的增加伴随着反射分量的幅度的增加以及基础幂律的斜率的变陡。傅里叶频率解析光谱分析表明，与主发射相比，频率高于 1·10 Hz 的反射分量的变异性受到抑制。
We analyze RXTE/PCA observations of GX 339{4 in the low spectral state from 1996{1997 and show that the pattern of its spectral and temporal variability is nearly identical to that of Cyg X-1. In particular, a tight correlation exists between the QPO centroid frequency and the spectral parameters. An increase of the QPO centroid frequency is accompanied with an increase of the amplitude of the reflected component and a steepening the slope of the underlying power law. Fourier frequency resolved spectral analysis showed, that the variability of the reflected component at frequencies higher than 1 10 Hz is suppressed in comparison with that of the primary emission.