Primordial black hole mass functions as a probe of cosmic origin

Yi-Fu Cai ¹Chengfeng Tang ¹Geyu Mo ¹Sheng-Feng Yan ²Chao Chen ³Xiao-Han Ma ¹Bo Wang ¹Wentao Luo ¹Damien A.Easson ⁴Antonino Marcianò⁵

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作者信息

1. Deep Space Exploration Laboratory/School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China;CAS Key Laboratory for Researches in Galaxies and Cosmology/Department of Astronomy,School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026,China
2. Istituto Nazionale di Fisica Nucleare(INFN),Sezione di Milano,Milano 20146,Italy;DiSAT,Università degli Studi dell'Insubria,Como 22100,Italy;School of Physics,University of Electronic Science and Technology of China,Chengdu 611731,China
3. Jockey Club Institute for Advanced Study,The Hong Kong University of Science and Technology,Hong Kong,China
4. Department of Physics,Arizona State University,Tempe 85287-1504,USA
5. Department of Physics & Center for Field Theory and Particle Physics,Fudan University,Shanghai 200433,China;Laboratori Nazionali di Frascati INFN Via Enrico Fermi 54,Frascati(Roma)00044,Italy;INFN sezione Roma Tor Vergata,Rome I-00133,Italy
折叠

Abstract

We discuss a novel window to probe the origin of our universe via the mass functions of primordial black holes(PBHs).The mass functions of PBHs are simply estimated using the conventional Press-Schechter formalism for two paradigms of cosmic origin,including inflationary ACDM and bounce cosmology.The standard inflationary ACDM model cannot generate an appre-ciable number of massive PBHs;however,non-trivial inflation models with blue-tilted power spectra at small scales and matter bounce cosmology provide formation mechanisms for heavy PBHs,which in turn,may seed the observed supermassive black holes(SMBHs).By fitting the SMBH mass functions at high redshift(z～6)derived from Sloan Digital Sky Survey(SDSS)and Canada-France High-z Quasar Survey(CFHQS)quasars,for two paradigms of cosmic origin,we derive constraints on the PBH density fraction fPBH at z～6 and the characteristic mass M*,with the prior assumption that all SMBHs stem from PBHs.We demonstrate that this newly proposed procedure,relying on astronomical measurements that utilize deep-field surveys of SMBHs at high redshift,can be used to constrain models of cosmic origin.Additionally,although not the main focus of this paper,we evolve the mass function from z～6 to z～0 through an assumption of 3 × 108-year Eddington's accretion,and give a rough estimation of fPBH at z～0.

Key words

origin and formation of the universe/dark matter/black holes/inflationary universe

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基金项目

National Key R&D Program of China(2021YFC2203100)

CAS Young Interdisciplinary Innovation Team(JCTD-2022-20)

National Natural Science Foundation of China(11875113)

National Natural Science Foundation of China(11961131007)

National Natural Science Foundation of China(12261131497)

National Natural Science Foundation of China(12003029)

National Natural Science Foundation of China(11833005)

National Natural Science Foundation of China(12192224)

111 Project(B23042)

Fundamental Research Funds for Central Universities()

CSC Innovation Talent Funds()

USTC Fellowship for International Cooperation()

USTC Research Funds of the Double First-Class Initiative()

CAS project for young scientists in basic research(YSBR-006)

Shanghai Municipality Science and Technology Commission(KBH1512299)

Disposizione del Presidente INFN in INFN Sezione di Milano(24433)

U.S.Department of Energy,Office of High Energy Physics(DE-SC0019470)

Foundational Questions Institute(FQXi-MGB-1927)

出版年

2024

中国科学:物理学力学天文学(英文版)

中国科学院

中国科学:物理学力学天文学(英文版)

CSTPCD

影响因子：0.91

ISSN：1674-7348

段落导航

Primordial black hole mass functions as a probe of cosmic origin

Primordial black hole mass functions as a probe of cosmic origin

Abstract

Key words

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基金项目

出版年

中国科学:物理学 力学 天文学(英文版)

中国科学:物理学力学天文学(英文版)