scholarly journals Reconstruction of primordial power spectrum of curvature perturbation from the merger rate of primordial black hole binaries

2021 ◽  
Vol 2021 (04) ◽  
pp. 031
Author(s):  
Rampei Kimura ◽  
Teruaki Suyama ◽  
Masahide Yamaguchi ◽  
Ying-li Zhang
Keyword(s):  
Black Hole ◽  
Power Spectrum ◽  
Primordial Black Hole ◽  
Curvature Perturbation ◽  
Black Hole Binaries ◽  
Primordial Power Spectrum ◽  
Merger Rate

scholarly journals PRIMORDIAL BLACK HOLE CONSTRAINTS FOR CURVATON MODELS WITH PREDICTED LARGE NON-GAUSSIANITY

2013 ◽  
Vol 22 (07) ◽  
pp. 1350034 ◽  
Author(s):  
E. V. BUGAEV ◽  
P. A. KLIMAI
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Power Spectrum ◽  
Mass Spectra ◽  
Primordial Black Hole ◽  
Primordial Black Holes ◽  
Curvature Perturbation ◽  
Small Scales ◽  
Non Gaussian ◽  
Spectrum Amplitude

We consider the early Universe scenario which allows for production of non-Gaussian curvature perturbations at small scales. We study the peculiarities of a formation of primordial black holes (PBHs) connected with the non-Gaussianity. In particular, we show that PBH constraints on the values of curvature perturbation power spectrum amplitude are strongly dependent on the shape of perturbations and can significantly (by two orders of magnitude) deviate from the usual Gaussian limit [Formula: see text]. We give examples of PBH mass spectra calculations and PBH constraints for the particular case of the curvaton model.

scholarly journals Merger rate distribution of primordial black hole binaries with electric charges

2020 ◽  
Vol 102 (4) ◽  
Author(s):  
Lang Liu ◽  
Zong-Kuan Guo ◽  
Rong-Gen Cai ◽  
Sang Pyo Kim
Keyword(s):  
Black Hole ◽  
Primordial Black Hole ◽  
Rate Distribution ◽  
Black Hole Binaries ◽  
Merger Rate

scholarly journals GW200105 and GW200115 are compatible with a scenario of primordial black hole binary coalescences

2022 ◽  
Vol 82 (1) ◽  
Author(s):  
Sai Wang ◽  
Zhi-Chao Zhao
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Cold Dark Matter ◽  
Primordial Black Hole ◽  
Primordial Black Holes ◽  
Microwave Background ◽  
Black Hole Binaries ◽  
Upper Limits ◽  
Merger Rate ◽  
The One

AbstractTwo gravitational wave events, i.e. GW200105 and GW200115, were observed by the Advanced LIGO and Virgo detectors recently. In this work, we show that they can be explained by a scenario of primordial black hole binaries that are formed in the early Universe. The merger rate predicted by such a scenario could be consistent with the one estimated from LIGO and Virgo, even if primordial black holes constitute a fraction of cold dark matter. The required abundance of primordial black holes is compatible with the existing upper limits from microlensing, caustic crossing and cosmic microwave background observations.

scholarly journals Merger rate of primordial black-hole binaries

2017 ◽  
Vol 96 (12) ◽  
Author(s):  
Yacine Ali-Haïmoud ◽  
Ely D. Kovetz ◽  
Marc Kamionkowski
Keyword(s):  
Black Hole ◽  
Primordial Black Hole ◽  
Black Hole Binaries ◽  
Merger Rate

scholarly journals The Merger Rate of Black Holes in a Primordial Black Hole Cluster

Physics ◽  
2021 ◽  
Vol 3 (2) ◽  
pp. 372-378
Author(s):  
Viktor D. Stasenko ◽  
Alexander A. Kirillov
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Mass Spectrum ◽  
Star Clusters ◽  
Primordial Black Hole ◽  
Primordial Black Holes ◽  
Central Black Hole ◽  
Solar Mass ◽  
Merger Rate

In this paper, the merger rate of black holes in a cluster of primordial black holes (PBHs) is investigated. The clusters have characteristics close to those of typical globular star clusters. A cluster that has a wide mass spectrum ranging from 10−2 to 10M⊙ (Solar mass) and contains a massive central black hole of the mass M•=103M⊙ is considered. It is shown that in the process of the evolution of cluster, the merger rate changed significantly, and by now, the PBH clusters have passed the stage of active merging of the black holes inside them.

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