Rapidly growing primordial black holes as seeds of the massive high-redshift JWST Galaxies  

作　　者：Guan-Wen Yuan Lei Lei Yuan-Zhu Wang Bo Wang Yi-Ying Wang Chao Chen Zhao-Qiang Shen Yi-Fu Cai Yi-Zhong Fan 

机构地区：[1]Key Laboratory of Dark Matter and Space Astronomy,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China [2]School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026,China [3]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [4]Deep Space Exploration Laboratory/Department of Astronomy,School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China [5]Jockey Club Institute for Advanced Study,The Hong Kong University of Science and Technology,Hong Kong,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第10期139-146,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported in part by the National Key R&D Program of China(Grant No.2021YFC2203100);the National Natural Science Foundation of China(Grant Nos.11921003,11961131007,11653002,12003029,12261131497,and 12003074);China Postdoctoral Science Foundation(Grant No.2023TQ0355);CAS Young Interdisciplinary Innovation Team(Grant No.JCTD-2022-20);111 Project for“Observational and Theoretical Research on Dark Matter and Dark Energy”(Grant No.B23042);the Fundamental Research Funds for Central Universities;the CSC Innovation Talent Funds;the CAS Project for Young Scientists in Basic Research(Grant No.YSBR-006);by the USTC Research Funds of the Double First-Class Initiative。

摘　　要：A group of massive galaxies at redshifts of z■7 have been recently detected by the James Webb Space Telescope(JWST),which were unexpected to form at such an early time within the standard Big Bang cosmology.In this work,we propose that this puzzle can be explained by the presence of some primordial black holes(PBHs)with a mass of~1000M_(⊙).These PBHs act as seeds for early galaxy formation with masses of~10^(8)-10^(10)M_(⊙)at high redshift,hence accounting for the JWST observations.We use a hierarchical Bayesian inference framework to constrain the PBH mass distribution models,and find that the Lognormal model with the M_(c)~750M_(⊙)is preferred over other hypotheses.These rapidly growing BHs are expected to have strong radiation and may appear as high-redshift compact objects,similar to those recently discovered by JWST.Although we focused on PBHs in this work,the bound on the initial mass of the seed black holes remains robust even if they were formed through astrophysical channels.

关 键 词：primordial black hole dark matter halo black hole accretion primordial galaxies 

分 类 号：P145.8[天文地球—天体物理]