首页|Primordial black hole mass functions as a probe of cosmic origin

Primordial black hole mass functions as a probe of cosmic origin

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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.

origin and formation of the universedark matterblack holesinflationary universe

Yi-Fu Cai、Chengfeng Tang、Geyu Mo、Sheng-Feng Yan、Chao Chen、Xiao-Han Ma、Bo Wang、Wentao Luo、Damien A.Easson、Antonino Marcianò

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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

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

Jockey Club Institute for Advanced Study,The Hong Kong University of Science and Technology,Hong Kong,China

Department of Physics,Arizona State University,Tempe 85287-1504,USA

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

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National Key R&D Program of ChinaCAS Young Interdisciplinary Innovation TeamNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China111 ProjectFundamental Research Funds for Central UniversitiesCSC Innovation Talent FundsUSTC Fellowship for International CooperationUSTC Research Funds of the Double First-Class InitiativeCAS project for young scientists in basic researchShanghai Municipality Science and Technology CommissionDisposizione del Presidente INFN in INFN Sezione di MilanoU.S.Department of Energy,Office of High Energy PhysicsFoundational Questions Institute

2021YFC2203100JCTD-2022-20118751131196113100712261131497120030291183300512192224B23042YSBR-006KBH151229924433DE-SC0019470FQXi-MGB-1927

2024

10.1007/s11433-023-2314-1

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
年,卷(期)：2024.67(5)