Black hole accretion disc impacts
Black hole accretion disc impacts
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DOI：
10.1093/mnras/stv3023
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发表时间：
2015-10
影响因子：
4.8
通讯作者：
P. Pihajoki
中科院分区：
文献类型：
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作者：
P. Pihajoki
给出了一个计算超大质量黑洞与另一个超大质量黑洞吸积盘碰撞引起的耀斑光度和光谱演化的解析模型。我们的模型包括光子扩散，来自光学薄区的发射，以及对观测光谱和时间尺度的相对论修正。我们用模拟的一组拥有超大质量黑洞双星的类星体来测试撞击场景的可观测性。结果表明，当中等质量比为0.3，碰撞距离为100个原始Schwarzschild半径时，在观测波长{\lambda}=510 nm至z=0.6处，吸积盘碰撞的亮度有望等于或超过主机类星体。我们认为，吸积盘碰撞可以作为超大质量黑洞双星的独立探测器。我们将用于计算模型灯光曲线的代码发布给社区。
We present an analytic model for computing the luminosity and spectral evolution of flares caused by a supermassive black hole impacting the accretion disc of another supermassive black hole. Our model includes photon diffusion, emission from optically thin regions and relativistic corrections to the observed spectrum and time-scales. We test the observability of the impact scenario with a simulated population of quasars hosting supermassive black hole binaries. The results indicate that for a moderate binary mass ratio of 0.3, and impact distances of 100 primary Schwarzschild radii, the accretion disc impacts can be expected to equal or exceed the host quasar in brightness at observed wavelength {\lambda} = 510 nm up to z = 0.6. We conclude that accretion disc impacts may function as an independent probe for supermassive black hole binaries. We release the code used for computing the model light curves to the community.