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arXiv 1006.4773astro-ph.HEastro-ph.GA
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关于H1743-322的爆发演变:2008/2009年的比较

On the outburst evolution of H1743-322: a 2008/2009 comparison

S. Motta, T. Muñoz-Darias, T. Belloni

摘要:

我们提出了两个观测活动与RXTE卫星上的黑洞瞬态H 1743-322。2008年11月至2009年5月至7月期间,在两次不同的爆发中观察到了该源。我们已经进行了定时和频谱分析的数据集,获得一个完整的状态分类的所有观测。我们发现,所有的观测都很好地描述了由一个磁盘黑体,幂律+反射+吸收和高斯发射组件组成的光谱模型。在2009年的爆发中,系统遵循了在黑洞瞬变中看到的所有状态的规范演化。在2008年的爆发中,只达到了硬状态。光谱参数的早期演化在两个时期之间是一致的,并且它没有提供关于源的后续行为的线索。与两个主要光谱分量(即圆盘和幂律)相关的通量变化允许我们将系统的轨道倾角下限设定为>= 43°。

英文摘要:

We present two observational campaigns performed with the RXTE satellite on the black hole transient H 1743-322. The source was observed in outburst on two separate occasions between October-November 2008 and May-July 2009. We have carried out timing and spectral analysis of the data set, obtaining a complete state classification of all the observations. We find that all the observations are well described by using a spectral model consisting of a disk-blackbody, a powerlaw + reflection + absorption and a gaussian emission component. During the 2009 outburst the system followed the canonical evolution through all the states seen in black hole transients. In the 2008 outburst only the hard states were reached. The early evolution of the spectral parameters is consistent between the two epochs, and it does not provide clues about the subsequent behavior of the source. The variation of the flux associated to the two main spectral components (i.e. disk and powerlaw) allows us to set a lower limit to the orbital inclination of the system of >= 43°.

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