Effects of the shape of curvature peaks on the size of primordial black holes

被引:24
作者
Escriva, Albert [1 ,2 ]
Enea Romano, Antonio [3 ,4 ,5 ]
机构
[1] Univ Barcelona, Inst Ciencies Cosmos, Marti & Franques 1, Barcelona 08028, Spain
[2] Univ Barcelona, Fac Fis, Dept Fis Quant & Astrofis, Marti & Franques 1, Barcelona 08028, Spain
[3] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland
[4] ICRANet, Piazza Repubbl 10, I-65122 Pescara, Italy
[5] Univ Antioquia, Inst Fis, Medellin 1226, Colombia
关键词
primordial black holes; GR black holes; GRAVITATIONAL COLLAPSE; EXPANSION;
D O I
10.1088/1475-7516/2021/05/066
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We simulate numerically the formation of spherically symmetric primordial black holes (PBHs) seeded by different families of primordial curvature perturbations profiles in a radiation dominated Friedman-Robertson-Walker (FRW) Universe. We have studied the dependency on the curvature profile of the initial mass M-BH,M-i of the PBHs at the time of apparent horizon formation t(AH), and the final mass M-BH,M-f after the accretion process, using an excision technique, comparing M-BH,M-i to previous analytical estimations obtained using a compensated PBHs model approach. The analytical estimations are in agreement with numerical results, except for large values of the initial perturbation amplitude, when the compensated model is less accurate. The masses M-BH,M-f and M-BH,M-i do not depend only on the shape around the compaction function peak, but on the full profile of the initial curvature perturbation. We also estimate the accretion effects, and for PBHs with masses relevant for the dark matter abundance, with a final mass equal to the horizon crossing mass, we find M-BH,M-f approximate to 3M(BH,i).
引用
收藏
页数:17
相关论文
共 59 条
[1]  
Ashoorioon A., ARXIV201202817
[2]   PBH in single field inflation: the effect of shape dispersion and non-Gaussianities [J].
Atal, Vicente ;
Cid, Judith ;
Escriva, Albert ;
Garriga, Jaume .
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2020, (05)
[3]   The role of non-gaussianities in primordial black hole formation [J].
Atal, Vicente ;
Germani, Cristiano .
PHYSICS OF THE DARK UNIVERSE, 2019, 24
[4]   Did LIGO Detect Dark Matter? [J].
Bird, Simeon ;
Cholis, Ilias ;
Munoz, Julian B. ;
Ali-Haimoud, Yacine ;
Kamionkowski, Marc ;
Kovetz, Ely D. ;
Raccanelli, Alvise ;
Riess, Adam G. .
PHYSICAL REVIEW LETTERS, 2016, 116 (20)
[5]  
Bloomfield J., ARXIV150402071
[6]  
Boyd J.P., 2000, CHEBYSHEV FOURIER SP
[7]  
Carr B., arXiv:2002.12778
[8]   Separate universe problem: 40 years on [J].
Carr, B. J. ;
Harada, Tomohiro .
PHYSICAL REVIEW D, 2015, 91 (08)
[9]   New cosmological constraints on primordial black holes [J].
Carr, B. J. ;
Kohri, Kazunori ;
Sendouda, Yuuiti ;
Yokoyama, Junichi .
PHYSICAL REVIEW D, 2010, 81 (10)
[10]   Primordial Black Holes as Dark Matter: Recent Developments [J].
Carr, Bernard ;
Kuehnel, Florian .
ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, VOL 70, 2020, 70 :355-394