Results 11 to 20 of about 38,917 (207)

Clusters of Primordial Black Holes [PDF]

European Physical Journal C: Particles and Fields, 2019
The Primordial Black Holes (PBHs) are a well-established probe for new physics in the very early Universe. We discuss here the possibility of PBH agglomeration into clusters that may have several prominent observable features.
Konstantin M. Belotsky, Vyacheslav I. Dokuchaev, Yury N. Eroshenko, Ekaterina A. Esipova, Maxim Yu. Khlopov, Leonid A. Khromykh, Alexander A. Kirillov, Valeriy V. Nikulin, Sergey G. Rubin, Igor V. Svadkovsky   +9 more
doaj   +4 more sources

Primordial Black Holes in Phantom Cosmology [PDF]

General Relativity and Gravitation, 2009
We investigate the effects of accretion of phantom energy onto primordial black holes. Since Hawking radiation and phantom energy accretion contribute to a {\it decrease} of the mass of the black hole, the primordial black hole that would be expected to ...
Jamil, Mubasher, Qadir, Asghar
core   +5 more sources

NEUTRINOS FROM PRIMORDIAL BLACK HOLES [PDF]

Physical Review D, 1995
The emission of particles from black holes created in the early Universe has detectable astrophysical consequences. The most stringent bound on their abundance has been obtained from the absence of a detectable diffuse flux of 100 MeV photons.
A. D. Martin, A. D. Martin, A. de Rújula, B. J. Carr, B. J. Carr, Bettina Keszthelyi, C. Quigg, C. T. Hill, D. E. Alexandreas, D. N. Page, D. N. Page, D. W. McKay, Enrique Zas, F. Halzen, Francis Halzen, G. P. Lepage, J. H. MacGibbon, J. H. MacGibbon, L. V. Volkova, L. V. Volkova, M. H. Reno, M. Talebzadeh, P. Lipari, S. W. Hawking, S. W. Hawking, S. W. Hawking, S. W. Hawking, S. W. Hawking, T. K. Gaisser, T. K. Gaisser, T. K. Gaisser   +30 more
core   +4 more sources

On Mass Spectra of Primordial Black Holes [PDF]

Frontiers in Astronomy and Space Sciences, 2021
Evidence for the primordial black holes (PBH) presence in the early Universe renews permanently. New limits on their mass spectrum challenge existing models of PBH formation.
Alexander A. Kirillov, Sergey G. Rubin, Sergey G. Rubin   +2 more
doaj   +3 more sources

The formation probability of primordial black holes

Physics Letters B, 2021
We calculate the formation probability of primordial black holes generated during the collapse at horizon re-entry of large fluctuations produced during inflation, such as those ascribed to a period of ultra-slow-roll.
Matteo Biagetti, Valerio De Luca, Gabriele Franciolini, Alex Kehagias, Antonio Riotto   +4 more
doaj   +6 more sources

Cosmological implications of Primordial Black Holes [PDF]

Journal of Cosmology and Astroparticle Physics, 2017
The possibility that a relevant fraction of the dark matter might be comprised of Primordial Black Holes (PBHs) has been seriously reconsidered after LIGO's detection of a $\sim 30 M_{\odot}$ binary black holes merger.
Bellomo, Nicola, Bernal, José Luis, Raccanelli, Alvise, Verde, Licia   +3 more
core   +3 more sources

Constraints on primordial black holes [PDF]

Reports on Progress in Physics, 2021
Abstract We update the constraints on the fraction of the Universe that may have gone into primordial black holes (PBHs) over the mass range 10 −5 to 10 50  g.
Bernard Carr, Kazunori Kohri, Yuuiti Sendouda, Jun’ichi Yokoyama   +3 more
openaire   +3 more sources

Shining primordial black holes [PDF]

Physical Review D, 2021
11 pages, 8 figures.
Hertzberg, Mark P., Nurmi, Sami, Schiappacasse, Enrico D., Yanagida, Tsutomu, T.   +4 more
openaire   +4 more sources

Combustion and Pyrolysis EA-IRMS Techniques to Determine the δ²H of Diamonds. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale Diamonds are generally considered to be metasomatic minerals originating from the Earth's mantle. They formed through the interaction of carbon‐bearing fluids or melts with the surrounding deep lithology. Most knowledge about the formation of diamonds comes from studying their mineral inclusions or stable isotopes.
Fourel F, Lécuyer C, Thomassot E, Deloule E, Ojeimi C.   +4 more
europepmc   +2 more sources

Primordial rotating black holes [PDF]

Physical Review D, 2020
7 pages, PRD ...
J. A. de Freitas Pacheco, Joseph Silk
openaire   +2 more sources