States and transitions in black-hole binaries
States and transitions in black-hole binaries
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DOI：
10.1007/978-3-540-76937-8_3
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发表时间：
2009-09
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影响因子：
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通讯作者：
T. Belloni
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文献类型：
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作者：
T. Belloni
随着罗西x射线定时探测器提供的大型黑洞瞬变数据库的可用性，观测到的现象变得非常复杂。原来按照质量吸积率将这些系统的性质按一系列静态状态进行分类的方法被证明不能涵盖新的情况。我在这里概述了目前的情况，并表明当考虑到x射线光谱硬度和分数变异性等简单特性时，就会出现连贯的画面。特别是，快时变率特性中的快跃迁似乎对描述黑洞瞬态演化至关重要。基于这幅图，我提出了一种考虑到观察到的转变的状态分类。我表明，除了瞬态系统，其他黑洞双星和活动星系核也可以在这个框架内解释。这些状态与黑洞周围吸积流物理之间的联系，只有通过对星系瞬态系统的全程演化建模，才有可能实现。
With the availability of the large database of black-hole transients from the Rossi X-Ray Timing Explorer, the observed phenomenology has become very complex. The original classification of the properties of these systems in a series of static states sorted by mass accretion rate proved not to be able to encompass the new picture. I outline here a summary of the current situation and show that a coherent picture emerges when simple properties such as X-ray spectral hardness and fractional variability are considered. In particular, fast transition in the properties of the fast time variability appear to be crucial to describe the evolution of black-hole transients. Based on this picture, I present a state classification which takes into account the observed transitions. I show that, in addition to transients systems, other black-hole binaries and Active Galactic Nuclei can be interpreted within this framework. The association between these states and the physics of the accretion flow around black holes will be possible only through modeling of the full time evolution of galactic transient systems.