arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.3827astro-ph.HEastro-ph.CO
收藏

大质量黑洞自旋的演化

Evolution of massive black hole spins

Marta Volonteri

摘要:

黑洞自旋影响“经典”吸积过程的效率,从而影响类星体的辐射输出。自旋还决定了从黑洞本身可以提取多少能量。最近,人们发现大质量黑洞的自旋也会影响黑洞在星系中的滞留,这是由于合并时引力波的各向异性发射造成的脉冲“引力反冲”,高达数千公里/秒。在这里,我讨论了大质量黑洞自旋的演化沿宇宙的历史,由于合并和吸积事件的组合。我描述了最近的模拟吸积黑洞合并残留物,并讨论了类星体的黑洞的自旋的影响。

英文摘要:

Black hole spins affect the efficiency of the "classical" accretion processes, hence the radiative output from quasars. Spins also determine how much energy is extractable from the hole itself. Recently it became clear that massive black hole spins also affect the retention of black holes in galaxies, be cause of the impulsive "gravitational recoil", up to thousands km/s, due to anisotropic emission of gravitational waves at merger. I discuss here the evolution of massive black hole spins along the cosmic history, due to the combination of mergers and accretion events. I describe recent simulations of accreting black holes in merger remnants, and discuss the implication for the spins of black holes in quasars.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑