最大质量黑洞的宇宙自旋
The cosmic spin of the most massive black holes
摘要：
在假设活动星系核中的喷流是由吸积和中心超大质量黑洞的自旋提供动力的情况下，我们能够再现高激发和低激发星系的射电光度函数。高激发星系被解释为高吸积率，但非常低的自旋对象，而低激发星系有低吸积率和双峰自旋分布，约一半的人口具有最大的自旋。在较高的红移（z~1），高吸积率物体的流行意味着典型的自旋较低，而在今天的宇宙中，低吸积率物体占主导地位，具有双峰自旋分布。
英文摘要：
Under the assumption that jets in active galactic nuclei are powered by accretion and the spin of the central supermassive black hole, we are able to reproduce the radio luminosity functions of high- and low-excitation galaxies. High-excitation galaxies are explained as high-accretion rate but very low spin objects, while low-excitation galaxies have low accretion rates and bimodal spin distributions, with approximately half of the population having maximal spins. At higher redshifts (z~1), the prevalence of high accretion rate objects means the typical spin was lower, while in the present day Universe is dominated by low accretion rate objects, with bimodal spin distributions.
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。
