High-redshift supermassive black holes from tiny black hole explosions

被引：5

作者：

Lu, Yifan ^{[1
]}

Picker, Zachary S. C. ^{[1
]}

Kusenko, Alexander ^{[1
,2
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Univ Tokyo, Inst Adv Study, Kavli Inst Phys & Math Universe WPI, Chiba 2778583, Japan

来源：

PHYSICAL REVIEW D | 2024年 / 109卷 / 12期

基金：

日本学术振兴会;

关键词：

PRIMORDIAL STAR-FORMATION; DARK-MATTER ANNIHILATION; VIRIAL TEMPERATURES; MASS; H-2; FLUCTUATIONS; COLLAPSE; HYDROGEN; QUASARS; OBJECTS;

D O I：

10.1103/PhysRevD.109.123016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent observations of the high-redshift universe have uncovered a significant number of active galactic nuclei, implying that supermassive black holes (SMBHs) would have to have been formed at much earlier times than expected. Direct collapse of metal -free gas clouds to SMBHs after recombination could help explain the early formation of SMBHs, but this scenario is stymied by the fragmentation of the clouds due to efficient molecular hydrogen cooling. We show that a subdominant population of tiny, evaporating primordial black holes, with significant clustering in some gas clouds, can heat the gas sufficiently so that molecular hydrogen is not formed, and direct collapse to black holes is possible even at high redshifts.

引用

页数：15

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