Supermassive Primordial Black Holes for Nano-Hertz Gravitational Waves and High-redshift JWST Galaxies
H. X. Huang, Yong Cai, Jun-Qian Jiang, Jun Zhang, Yun-Song Piao
Abstract
Abstract Recently, observational hints for supermassive black holes have been accumulating, prompting the question: Can primordial black holes (PBHs) be supermassive, particularly with masses M ≳ 10 9 M ⊙ ? A supercritical bubble, containing an inflating baby universe, that nucleated during inflation can evolve into a PBH in our observable universe. We find that when the inflaton slowly transitions past a neighboring vacuum, the nucleation rate of supercritical bubbles inevitably peaks, leading to a mass distribution of multiverse PBHs with a peak mass up to M ≳ 10 11 M ⊙ . Thus, our mechanism naturally provides a primordial origin for supermassive black holes.
Topics & Concepts
PhysicsAstrophysicsSupermassive black holeRedshiftGalaxyGravitational waveAstronomyGravitationHertzQuantum mechanicsCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsPulsars and Gravitational Waves Research