Testing reflection features in 4U 1705−44 with XMM-Newton, BeppoSAX, and RXTE in the hard and soft states
Testing reflection features in 4U 1705−44 with XMM-Newton, BeppoSAX, and RXTE in the hard and soft states
复制标题
使用 XMM-Newton、BeppoSAX 和 RXTE 在硬状态和软状态下测试 4U 1705−44 中的反射特征
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
A. Santangelo
中科院分区：
文献类型：
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作者：
E. Egron;T. Salvo;S. Motta;L. Burderi;A. Papitto;R. Duro;A. D’Aì;A. Riggio;T. Belloni;R. Iaria;N. Robba;S. Piraino;A. Santangelo
我们使用XMM-牛顿、BeppoSAX和RXTE在硬态和软态下拍摄的明亮环礁源4U 1705−44的数据，对该源中的反射分量进行自洽研究。虽然来自这些X射线观测站的数据是不同时的，但当源通量相似时，谱分解在不同观测之间是一致的。因此，我们选择了在硬态和软态相似的通量水平下进行的观测，以研究这两种状态在宽带（0.1 - 200 keV）能量范围内的光谱形状，具有良好的能量分辨率，并使用自洽反射模型。这些反射模型提供了一个很好的适合在整个光谱范围内的硬和软状态的X射线光谱。我们讨论的差异，我们发现在这两个国家的主要光谱参数，提供证据表明，在硬态的光学厚盘的内径略有后退。
We use data from the bright atoll source 4U 1705−44 taken with XMM-Newton, BeppoSAX, and RXTE both in the hard and in the soft state to perform a self-consistent study of the reflection component in this source. Although the data from these X-ray observatories are not simultaneous, the spectral decomposition is shown to be consistent among the different observations, when the source flux is similar. We have therefore selected observations performed at similar flux levels in the hard and soft states to study the spectral shape in these two states in a broad-band (0.1−200 keV) energy range, with good energy resolution, and using self-consistent reflection models. These reflection models provide a good fit for the X-ray spectrum both in the hard and in the soft state in the whole spectral range. We discuss the differences in the main spectral parameters we find in both states, providing evidence that the inner radius of the optically thick disk slightly recedes in the hard state.
DOI：
10.1088/0004-637x/720/1/205
发表时间：
2009-08
期刊：
The Astrophysical Journal
影响因子：
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作者：
E. Cackett
通讯作者：
E. Cackett