New cosmological constraints on primordial black holes
Bernard Carr,Bernard Carr,Bernard Carr,Kazunori Kohri,Kazunori Kohri,Kazunori Kohri,Yuuiti Sendouda,Yuuiti Sendouda,Jun'ichi Yokoyama,Jun'ichi Yokoyama +9 more
TLDR
In this article, the fraction of the universe going into primordial black holes in the mass range was studied and the effects of their evaporations on big bang nucleosynthesis and the extragalactic photon background were discussed.Abstract:
We update the constraints on the fraction of the Universe going into primordial black holes in the mass range ${10}^{9}--{10}^{17}\text{ }\text{ }\mathrm{g}$ associated with the effects of their evaporations on big bang nucleosynthesis and the extragalactic photon background. We include for the first time all the effects of quark and gluon emission by black holes on these constraints and account for the latest observational developments. We then discuss the other constraints in this mass range and show that these are weaker than the nucleosynthesis and photon background limits, apart from a small range ${10}^{13}--{10}^{14}\text{ }\text{ }\mathrm{g}$, where the damping of cosmic microwave background anisotropies dominates. Finally we review the gravitational and astrophysical effects of nonevaporating primordial black holes, updating constraints over the broader mass range $1--{10}^{50}\text{ }\text{ }\mathrm{g}$.read more
Citations
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I and i
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Did LIGO Detect Dark Matter
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TL;DR: In this paper, the authors considered the possibility that the black-hole binary detected by LIGO may be a signature of dark matter and showed that there remains a window for masses 20M⊙ √ √ m −1 −2 m −3 m −2 n −1 where primordial black holes (PBHs) may constitute the dark matter.
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Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914
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Primordial Black Holes - Perspectives in Gravitational Wave Astronomy -
Misao Sasaki,Teruaki Suyama,Takahiro Tanaka,Takahiro Tanaka,Shuichiro Yokoyama,Shuichiro Yokoyama +5 more
TL;DR: In this paper, a review of the current understanding of primordial black holes (PBHs), with particular focus on those massive examples ( ) which remain at the present epoch, not having evaporated through Hawking radiation, is presented.
References
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Journal ArticleDOI
I and i
TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
Journal ArticleDOI
Particle Creation by Black Holes
TL;DR: In this article, it is shown that quantum mechanical effects cause black holes to create and emit particles as if they were hot bodies with temperature, which leads to a slow decrease in the mass of the black hole and to its eventual disappearance.
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PYTHIA 6.4 Physics and Manual
TL;DR: The Pythia program as mentioned in this paper can be used to generate high-energy-physics ''events'' (i.e. sets of outgoing particles produced in the interactions between two incoming particles).
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Five-year wilkinson microwave anisotropy probe observations: cosmological interpretation
Eiichiro Komatsu,Jo Dunkley,Jo Dunkley,M. R. Nolta,Charles L. Bennett,B. Gold,Gary Hinshaw,N. Jarosik,Davin Larson,Michele Limon,Lyman A. Page,David N. Spergel,Mark Halpern,Robert S. Hill,Alan J. Kogut,S. S. Meyer,Gregory S. Tucker,Janet Weiland,Edward J. Wollack,Edward L. Wright +19 more
TL;DR: In this article, the Wilkinson Microwave Anisotropy Probe (WMAP) 5-year data were used to constrain the physics of cosmic inflation via Gaussianity, adiabaticity, the power spectrum of primordial fluctuations, gravitational waves, and spatial curvature.
Journal ArticleDOI
Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
Eiichiro Komatsu,Jo Dunkley,M. R. Nolta,Charles L. Bennett,B. Gold,Gary Hinshaw,Norman Jarosik,David L. Larson,Michele Limon,L. Page,David N. Spergel,Mark Halpern,Robert S. Hill,A. Kogut,S. S. Meyer,G. S. Tucker,Janet Weiland,Edward J. Wollack,Edward L. Wright +18 more
TL;DR: In this paper, the authors show that the tensor-to-scalar ratio r 1 is disfavored regardless of r. They provide a set of "WMAP distance priors, to test a variety of dark energy models.