Reconstruction of power spectrum of primordial curvature perturbations on small scales from primordial black hole binaries scenario of LIGO/VIRGO detection  

作　　者：Xinpeng Wang Ying-li Zhang Rampei Kimura Masahide Yamaguchi 

机构地区：[1]School of Physics Science and Engineering,Tongji University,Shanghai,200092,China [2]Institute for Advanced Study of Tongji University,Shanghai,200092,China [3]Kavli Institute for the Physics and Mathematics of the Universe(WPI),Chiba,277-8583,Japan [4]Center for Gravitation and Cosmology,Yangzhou University,Yangzhou,225009,China [5]Waseda Institute for Advanced Study,Waseda University,Tokyo,169-8050,Japan [6]Department of Physics,Tokyo Institute of Technology,Tokyo,152-8551,Japan

出　　处：《Science China(Physics,Mechanics & Astronomy)》2023年第6期87-93,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：the support from JSPS Grant-in-Aid for Scientific Research (Grant Nos. JP18K18764, JP21H01080, and JP21H00069);the Fundamental Research Funds for the Central Universities。

摘　　要：As a candidate bound for the Binary Black Hole(BBH) merger events detected by LIGO/Virgo, Primordial Black Holes(PBHs)provide a useful tool to investigate the primordial curvature perturbations on small scales. Using the GWTC-1 to GWTC-3 catalogs, under the scenario that PBHs originate from large primordial curvature perturbations on small scales during infiationary epoch, we for the first time reconstruct the power spectrum of primordial curvature perturbations on small scales. It is found that the value of the amplitude of the primordial power spectrum is enhanced to O(10-2)on scales O(1) pc. This may imply the validity of PBH as a possible BBH merger candidate.

关 键 词：primordial black hole primordial curvature perturbation gravitational wave INFLATION 

分 类 号：P145.8[天文地球—天体物理]