论文标题
2008年观察到的M87核的磁盘演变
Disk evolution of the M87's nucleus observed in 2008
论文作者
论文摘要
我们通过重新分析了2007年至2008年的8个Chandra观测值，报告了M87核区域的年度X射线变化的发现。X射线光谱拟合并分解为磁盘和燃烧组件。通过简单的块状积聚模型可以很好地解释今年规模的X射线变异性。我们得出的结论是，M87的中央超质量黑洞正在吸收$ \ sim0.5 $ m $ _ \ odot $的云。
We report the discovery of year-scale X-ray variation in the nuclear region of the M87 by reanalyzing the 8 Chandra observations from 2007 to 2008. The X-ray spectra are fitted and decomposed into the disk and flaring components. This year-scale X-ray variability can be explained quite well by a simple clumpy accretion model. We conclude that the central super-massive black hole of the M87 was accreting a cloud of $\sim0.5$M$_\odot$ at that time.
