The central black hole masses for the γ-ray loud blazars
The central black hole masses for the γ-ray loud blazars
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DOI：
10.1007/s11433-010-4113-z
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发表时间：
2010-08
期刊：
影响因子：
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通讯作者：
Jianghe Yang;Junhui Fan
中科院分区：
文献类型：
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作者：
Jianghe Yang;Junhui Fan
费米伽马射线空间望远镜(前称GLAST)上的大面积望远镜(LAT)提高了灵敏度，并探测到伽马射线源的快速变化。利用LAT和ERET探测到的伽马射线响亮星的变率时间尺度和伽马射线光度来估计中心黑洞的质量。在这项工作中，我们发现中心黑洞质量的下限在(0.3-24)×107m⊙的范围内，并与其他作者的结果进行了比较。我们的结果与其他作者的结果是一致的。此外，还得到了18颗已知超光速运动的blazar天体的洛伦兹因子Γ和传播角θ。
The Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope (formerly GLAST) provides an increase in sensitivity and has detected rapid variability of gamma-ray sources. The variability time scales detected from the gamma-ray loud blazars by LAT and EGRET, and gamma-ray luminosity are used to estimate the central black hole masses. In this work, we find that the lower limits of central black hole masses are in a range of (0.3–24)×107M⊙, which are compared with those obtained by other authors. Our results are consistent with other authors’ results. Also, the Lorentz factor,Γ, and the propagation angle,θ, are obtained for 18 blazars for which superluminal motions are known.