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Primordial black holes

open access: yes
This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor J. Andrews) to be published by Elsevier as a Reference Module.
Carr, Bernard, Kuhnel, Florian
  +9 more sources

Spin of primordial black holes [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
Primordial black holes, formed from rare peaks in the primordial fluctuations $ζ$, are non-rotating at zeroth order in $ζ_{\rm rms}$. We show that the spin also vanishes at first order in $ζ_{\rm rms}$, suggesting the dimensionless spin parameter $a_{\rm rms} \sim ζ_{\rm rms}^2$.
Mirbabayi, Mehrdad   +2 more
openaire   +3 more sources

Probability for primordial black holes [PDF]

open access: yesPhysical Review D, 1995
16 pages, LaTeX, accepted for publication in Phys. Rev. D; we have added brief remarks on the generality of our results and on the validity of the semiclassical ...
Bousso, R., Hawking, S. W.
openaire   +3 more sources

Primordial black hole reheating

open access: yesPhysical Review D, 2023
17 pages, 9 ...
Haque, Md Riajul   +3 more
openaire   +3 more sources

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

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Two 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 ...
Sai Wang, Zhi-Chao Zhao
doaj   +1 more source

Were recently reported MHz events planet mass primordial black hole mergers?

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
A bulk acoustic wave cavity as high frequency gravitational wave antenna has recently detected two rare events at 5.5MHz. Assuming that the detected events are due to gravitational waves, their characteristic strain amplitude lies at about $$h_c\approx 2.
Guillem Domènech
doaj   +1 more source

Primordial black hole evolution in two-fluid cosmology [PDF]

open access: yes, 2020
Several processes in the early universe might lead to the formation of primordial black holes with different masses. These black holes would interact with the cosmic plasma through accretion and emission processes.
Gutiérrez, Eduardo M.   +2 more
core   +2 more sources

Primordial black holes [PDF]

open access: yesResearch in Astronomy and Astrophysics, 2010
Invited contribution to Recent Advances on the Physics of Compact Objects and Grvitational Waves, 2007, Ed.
openaire   +3 more sources

The clustering evolution of primordial black holes [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
21 pages, 6 ...
De Luca V.   +3 more
openaire   +3 more sources

Observational Imprints of Enhanced Scalar Power on Small Scales in Ultra Slow Roll Inflation and Associated Non-Gaussianities

open access: yesGalaxies, 2023
The discovery of gravitational waves from merging binary black holes has generated considerable interest in examining whether these black holes could have a primordial origin.
H. V. Ragavendra, L. Sriramkumar
doaj   +1 more source

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