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arXiv 1903.05970astro-ph.HEgr-qc
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超大质量Kerr黑洞周围出现的环面碰撞的RAD能量学和约束

RADs energetics and constraints on emerging tori collisions around super-massive Kerr Black Holes

D. Pugliese, Z. Stuchlík

摘要:

我们提供了可能的配置和相互作用的两个共面环面围绕中心克尔黑洞(BH)的限制,依赖于它的无量纲自旋。两个环面的配置可以直接链接到目前的模型具有银河BH X射线发射的遮蔽。讨论了各个环面不稳定相的出现,并研究了环面碰撞。第一个简单的质心能量的评估证明,碰撞能量效率的无量纲BH自旋增加。我们探讨的现象学方面的共转和反转环面通过分析性质的轨道环形配置相关的流体焓通量,质量通量,质量吸积率,和尖点光度在两种情况下的共转和反转流体依赖于SMBH自旋。分析最终导致了共转与反转环面的性质的比较研究,表明两个吸积环面只能在非常特定的条件下围绕中心克尔吸引子运行。我们的结果还表明,这些双环系统的不稳定相的动力学对于在X射线发射中可以观察到的高能现象以及活动星系核和类星体中的极高能现象具有重要意义。

英文摘要:

We provide constraints on possible configurations and interactions of two coplanar tori orbiting a central Kerr black hole (BH), in dependence on its dimensionless spin. The two-tori configurations can be directly linked to the current models featuring the obscuration of galactic BH X-ray emission. The emergence of each torus instability phases is discussed and tori collision has been also investigated. The first simple evaluation of the center-of-mass energy proves that collision-energy-efficiency increases with the dimensionless BH spin. We explore the phenomenological aspects of the corotating and counterrotating tori by analyzing properties of the orbiting toroidal configurations related to the fluid enthalpy flux, the mass-flux, the mass-accretion-rates, and the cusp luminosity in the two cases of corotating and counterrotating fluids in dependence on the SMBH spin. The analysis resulted ultimately in a comparative investigation of the properties of corotating versus counterrotating tori, demonstrating that two accretion tori can orbit around the central Kerr attractor only under very specific conditions. Our results also demonstrate that the dynamics of the unstable phases of these double tori systems is significant for the high energy phenomena which could be observable in the X-ray emission and extremely energetic phenomena in active galactic nuclei and quasar.

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