Results 71 to 80 of about 176,413 (293)
Evolution of a Primordial Black Hole Population [PDF]
, 1998 We reconsider in this work the effects of an energy absorption term in the evolution of primordial black holes (hereafter PBHs) in the several epochs of the Universe.
A.S. Majumdar +10 more
core +2 more sources
Primordial black hole evaporation and dark matter production. I. Solely Hawking radiation [PDF]
Physical Review D, 2021 Andrew Cheeka,∗ Lucien Heurtierb,† Yuber F. Perez-Gonzalezc,d,e,‡ and Jessica Turnerb§ a Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, Chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium b Institute
Andrew Cheek +3 more
semanticscholar +1 more source
Particle creation rate for dynamical black holes [PDF]
, 2016 We present the particle creation probability rate around a general black hole as an outcome of quantum fluctuations. Using the uncertainty principle for these fluctuation, we derive a new ultraviolet frequency cutoff for the radiation spectrum of a ...
A Ashtekar +41 more
core +2 more sources
Primordial black holes from α-attractors [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 We consider primordial black hole (PBH) production in inflationary $ $-attractors. We discuss two classes of models, namely models with a minimal polynomial superpotential as well as modulated chaotic ones that admit PBHs. We find that a significant amplification of the curvature power spectrum ${\cal P_R}$ can be realized in this class of models with
Dalianis, Ioannis +2 more
openaire +2 more sources
Near-Critical Gravitational Collapse and the Initial Mass Function of Primordial Black Holes [PDF]
, 1998 The recent discovery of critical phenomena arising in gravitational collapse near the threshold of black hole formation is used to estimate the initial mass function of primordial black holes (PBHs).
A. M. Abrahams +13 more
core +2 more sources
GUT baryogenesis with primordial black holes [PDF]
Physical Review D, 2021 12 pages, 4 figures, 1 ...
Hooper, Dan, Krnjaic, Gordan
openaire +3 more sources
Monopodial and Sympodial Growth Modes in the Colonial Graptolithina (Hemichordata, Pterobranchia). [PDF]
Evol DevABSTRACT Two growth modes are recognized in colonial pterobranchs (Graptolithina): monopodial growth and sympodial growth. The earliest colonial Graptolithina likely developed through monopodial growth, a mode of colony formation well‐documented in the extant graptolite Rhabdopleura normani.
Maletz J, Lerosey-Aubril R.
europepmc +2 more sources
Gravitational wave production right after a primordial black hole evaporation [PDF]
Physical Review D, 2020 We discuss the footprint of evaporation of primordial black holes (PBHs) on stochastic gravitational waves (GWs) induced by scalar perturbations. We consider the case where PBHs once dominated the Universe but eventually evaporated before the big bang ...
Keisuke Inomata +4 more
semanticscholar +1 more source
Proceedings of 2nd World Summit: Exploring the Dark Side of the Universe — PoS(EDSU2018), 2018 Primordial Black Holes (PBH) can form after inflation due to high peaks in the primordial curvature power spectrum that collapse gravitationally during the radiation era, to form clusters of black holes that merge and increase in mass after recombination, generating today a broad mass-spectrum of black holes with masses ranging from 0.01 to $10^3~M_ ...
openaire +1 more source
Heavy Primordial Black Holes from Strongly Clustered Light Black Holes
Physical Review Letters, 2023 6 pages, 2 figures.
De Luca, Valerio +2 more
openaire +4 more sources