Results 31 to 40 of about 38,917 (207)
Search for primordial black holes with SGARFACE [PDF]
Astroparticle Physics, 2008 The Short GAmma Ray Front Air Cherenkov Experiment (SGARFACE) uses the Whipple 10 m telescope to search for bursts of $γ$ rays. SGARFACE is sensitive to bursts with duration from a few ns to $\sim$20 $μ$s and with $γ$-ray energy above 100 MeV. SGARFACE began operating in March 2003 and has collected 2.2 million events during an exposure time of 2267 ...
M. Schroedter +11 more
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Production of Primordial Black Holes in Improved E-Models of Inflation
Universe, 2023 E-type α-attractor models of single-field inflation were generalized further in order to accommodate production of primordial black holes (PBHs) via adding a near-inflection point to the inflaton scalar potential at smaller scales, in good agreement with
Daniel Frolovsky, Sergei V. Ketov
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Astrophysical Appearance of Primordial Black Holes
Astronomy Reports, 2023 14 pages, 3 figures, Paper presented at the Fifth Zeldovich meeting, an international conference in honor of Ya. B. Zeldovich held in Yerevan, Armenia on June 12--16, 2023. Submitted to Astronomy Reports by the recommendation of the special editors: R. Ruffini, N. Sahakyan and G.
Postnov, Konstantin +2 more
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Implications of primordial black holes on the first stars and the origin of the super--massive black holes [PDF]
, 2009 If the cosmological dark matter has a component made of small primordial black holes, they may have a significant impact on the physics of the first stars and on the subsequent formation of massive black holes.
Abel +62 more
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Physics Letters B, 2023 Primordial black holes (PBHs) can be both candidates of dark matter and progenitors of binary black holes (BBHs) detected by the LIGO-Virgo-KAGRA collaboration.
Li-Ming Zheng +4 more
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Primordial black holes from modified supergravity
European Physical Journal C: Particles and Fields, 2020 The modified supergravity approach is applied to describe a formation of Primordial Black Holes (PBHs) after Starobinsky inflation. Our approach naturally leads to the two-(scalar)-field attractor-type double inflation, whose first stage is driven by ...
Yermek Aldabergenov +2 more
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Primordial Black Holes and Gravitational Memory [PDF]
Progress of Theoretical Physics Supplement, 1999 We discuss the various ways in which primordial black holes may have formed in the early Universe and how the effects of such black holes can be used to place constraints on cosmological models. We show that such constraints may be severely modified if the value of the gravitational "constant" G varies with cosmological epoch, a possibility which ...
Carr, B. J., Goymer, C. A.
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GUT baryogenesis with primordial black holes [PDF]
Physical Review D, 2021 12 pages, 4 figures, 1 ...
Hooper, Dan, Krnjaic, Gordan
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Revisiting Primordial Black Hole Evolution [PDF]
Axioms, 2020 Primordial black holes (PBHs) are the sensitive probe for physics and cosmology of very early Universe. The observable effect of their existence depends on the PBH mass. Mini PBHs evaporate and do not survive to the present time, leaving only background effect of products of their evaporation, while PBHs evaporating now can be new exotic sources of ...
Maxim Khlopov, Biplab Paik, Saibal Ray
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Primordial black hole formation in supergravity [PDF]
Physical Review D, 1999 15pages (RevTeX file), final version to be published in Phys.
Kawasaki, M., Yanagida, T.
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