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PRIMORDIAL BLACK HOLES AND EARLY COSMOLOGY
, 1997
"... We describe the changes to the standard primordial black hole constraints on density perturbations if there are modifications to the standard cosmology between the time of formation and nucleosynthesis. 1 ..."
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We describe the changes to the standard primordial black hole constraints on density perturbations if there are modifications to the standard cosmology between the time of formation and nucleosynthesis. 1
ANTIMATTER FROM PRIMORDIAL BLACK HOLES
, 2002
"... Antiprotons and antideuterons are considered as probes to look for primordial black holes in our Galaxy. I give a brief overview of the latest developments on the subject. 1 ..."
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Antiprotons and antideuterons are considered as probes to look for primordial black holes in our Galaxy. I give a brief overview of the latest developments on the subject. 1
Primordial Black Holes in Phantom Cosmology
, 2009
"... In this paper, we have investigated the effects of accretion of phantom energy onto primordial black holes. Since Hawking radiation and phantom energy accretion contribute to a decrease of the mass of the black hole, the primordial black hole that would be expected to decay now due to the Hawking pr ..."
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Cited by 1 (0 self)
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In this paper, we have investigated the effects of accretion of phantom energy onto primordial black holes. Since Hawking radiation and phantom energy accretion contribute to a decrease of the mass of the black hole, the primordial black hole that would be expected to decay now due to the Hawking
Primordial black holes and asteroid danger
, 802
"... Probability for a primordial black hole to invade the Kuiper belt was calculated. We showed that primordial black holes of certain masses can significantly change asteroids’ orbits. These events may result in disasters, local for our solar system and global for the Earth (like the Tunguska meteorite ..."
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Probability for a primordial black hole to invade the Kuiper belt was calculated. We showed that primordial black holes of certain masses can significantly change asteroids’ orbits. These events may result in disasters, local for our solar system and global for the Earth (like the Tunguska
Hawking: The probability for primordial black holes
 Phys. Rev. D
, 1995
"... grqc/9506047 We consider two quantum cosmological models with a massive scalar field: an ordinary Friedmann universe and a universe containing primordial black holes. For both models we discuss the complex solutions to the Euclidean Einstein equations. Using the probability measure obtained from th ..."
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Cited by 13 (10 self)
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grqc/9506047 We consider two quantum cosmological models with a massive scalar field: an ordinary Friedmann universe and a universe containing primordial black holes. For both models we discuss the complex solutions to the Euclidean Einstein equations. Using the probability measure obtained from
NEUTRINOS FROM PRIMORDIAL BLACK HOLES
, 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. Further scrutiny of these bounds is of interest as they, ..."
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, for instance, rule out primordial black holes as a dark matter candidate. We here point out that these bounds can, in principle, be improved by studying the diffuse cosmic neutrino flux. Measurements of nearvertical atmospheric neutrino fluxes in a region of low geomagnetic latitude can provide a competitive
Primordial Black Holes With Gravitational Memory
, 1998
"... We have studied the evolution of primordial black holes (PBHs) in a universe with variable gravitational constant and bulk viscosity. We found that the gravitational constant attained its peak value at the time t ∼ 10 −23 sec but its Planck’s time is equal to the present value. A proton formed at a ..."
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We have studied the evolution of primordial black holes (PBHs) in a universe with variable gravitational constant and bulk viscosity. We found that the gravitational constant attained its peak value at the time t ∼ 10 −23 sec but its Planck’s time is equal to the present value. A proton formed at a
Primordial Black Holes With Gravitational Memory
, 1998
"... We have studied the evolution of primordial black holes (PBHs) in a universe with variable gravitational constant and bulk viscosity. We found that the gravitational constant attained its peak value at the time t ∼ 10 −23 sec but its value at Planck’s time is equal to the present value. A proton for ..."
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We have studied the evolution of primordial black holes (PBHs) in a universe with variable gravitational constant and bulk viscosity. We found that the gravitational constant attained its peak value at the time t ∼ 10 −23 sec but its value at Planck’s time is equal to the present value. A proton
ACCRETION, PRIMORDIAL BLACK HOLES AND STANDARD COSMOLOGY
, 905
"... Primordial Black Holes evaporate due to Hawking radiation. We find that the evaporation time of primordial black holes increase when accretion of radiation is included. Thus depending on accretion efficiency more and more number of primordial black holes are existing today, which strengthens the ide ..."
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Primordial Black Holes evaporate due to Hawking radiation. We find that the evaporation time of primordial black holes increase when accretion of radiation is included. Thus depending on accretion efficiency more and more number of primordial black holes are existing today, which strengthens
Moduli constraints on primordial black holes
, 2000
"... Abstract. The amount of late decaying massive particles (e.g., gravitinos, moduli) produced in the evaporation of primordial black holes (PBHs) of mass MBH < ∼ 109 g is calculated. Limits imposed by bigbang nucleosynthesis on the abundance of these particles are used to constrain the initial PBH ..."
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Cited by 2 (0 self)
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Abstract. The amount of late decaying massive particles (e.g., gravitinos, moduli) produced in the evaporation of primordial black holes (PBHs) of mass MBH < ∼ 109 g is calculated. Limits imposed by bigbang nucleosynthesis on the abundance of these particles are used to constrain the initial
Results 1  10
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18,945