Transient Relativistically Shifted Lines as a Probe of Black Hole Systems
Transient Relativistically Shifted Lines as a Probe of Black Hole Systems
复制标题
瞬态相对论位移线作为黑洞系统的探针
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
J. Reeves
中科院分区：
文献类型：
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作者：
T. Turner;S. Kraemer;J. Reeves
塞弗特星系的X射线光谱揭示了一种新型的X射线光谱特征，这似乎为黑洞系统提供了重要的新见解。XMM揭示了NGC 3516中Fe Kα向红的几条窄发射线。自从那次发现以来，在其他塞弗特星系中也观察到了这种现象，例如，NGC 7314和ESO 198-G24。我们提出了新的证据，红移的Fe线在XMM光谱的Mrk 766。这些数据揭示了这样一条线的能量发生重大变化的第一个证据，发生在几十千秒内。这种转变可以解释为一个喷射的气体团的减速接近逃逸速度。
X-ray spectra of Seyfert galaxies have revealed a new type of X-ray spectral feature, one that appears to offer important new insight into the black hole system. XMM revealed several narrow emission lines redward of Fe Kα in NGC 3516. Since that discovery the phenomenon has been observed in other Seyfert galaxies, e.g., NGC 7314 and ESO 198-G24. We present new evidence for a redshifted Fe line in XMM spectra of Mrk 766. These data reveal the first evidence for a significant shift in the energy of such a line, occurring over a few tens of kiloseconds. This shift may be interpreted as deceleration of an ejected blob of gas traveling close to the escape velocity.