Upper limits for γ-ray bursts from primordial black holes

Nature ◽  
1979 ◽  
Vol 277 (5693) ◽  
pp. 199-199 ◽  
Author(s):  
N. A. PORTER ◽  
T. C. WEEKES
Keyword(s):  
Black Holes ◽  
Primordial Black Holes ◽  
Upper Limits ◽  
Γ Ray

Search for high energy γ-ray bursts from evaporation of primordial black holes

Nature ◽  
1978 ◽  
Vol 271 (5647) ◽  
pp. 731-732 ◽  
Author(s):  
D. J. FEGAN ◽  
B. MCBREEN ◽  
D. O'BRIEN ◽  
C. O'SULLIVAN
Keyword(s):  
Black Holes ◽  
High Energy ◽  
Primordial Black Holes ◽  
Γ Ray

scholarly journals IS RADIATION OF QUANTIZED BLACK HOLES OBSERVABLE?

2007 ◽  
Vol 16 (07) ◽  
pp. 1243-1248 ◽  
Author(s):  
I. B. KHRIPLOVICH ◽  
N. PRODUIT
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Solar System ◽  
Evaporation Rate ◽  
Radiation Spectrum ◽  
Matter Density ◽  
Primordial Black Holes ◽  
Dark Matter Density ◽  
Upper Limit ◽  
Upper Limits

If primordial black holes (PBH) saturate the present upper limit on the dark matter density in our Solar system and if their radiation spectrum is discrete, the sensitivity of modern detectors is close to that necessary for detecting this radiation. This conclusion is not in conflict with the upper limits on the PBH evaporation rate.

scholarly journals Setting Upper Limits on the Local Burst Rate Density of Primordial Black Holes Using HAWC

2019 ◽  
Author(s):  
Kristi Engel ◽  
Alison Peisker ◽  
Pat Harding ◽  
Joshua Wood ◽  
Israel Martinez-Castellanos ◽  
...  
Keyword(s):  
Black Holes ◽  
Primordial Black Holes ◽  
Upper Limits

scholarly journals Black hole astrophysics with HAWC, the High Altitude Water Cherenkov γ-ray observatory

2016 ◽  
Vol 12 (S324) ◽  
pp. 309-316
Author(s):  
Alberto Carramiñana ◽  
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Binary Systems ◽  
Gamma Ray ◽  
Wide Field ◽  
Primordial Black Holes ◽  
Bl Lac Objects ◽  
High Duty Cycle ◽  
Wide Field Of View ◽  
Γ Ray

AbstractThe HAWC gamma-ray observatory is a wide field of view and high duty cycle γ-ray detector investigating the 0.1 - 100 TeV energy range. It has detected supermassive black holes in the near Universe, and is seeking to detect black hole related objects like gamma-ray bursts, Galactic binary systems, primordial black holes and gravitational wave mergers. Daily light curves of the BL Lac objects Mrk 421 and Mrk 501 are presented here, together with a compilation of studies of black hole related objects.

scholarly journals GW200105 and GW200115 are compatible with a scenario of primordial black hole binary coalescences

2022 ◽  
Vol 82 (1) ◽  
Author(s):  
Sai Wang ◽  
Zhi-Chao Zhao
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Cold Dark Matter ◽  
Primordial Black Hole ◽  
Primordial Black Holes ◽  
Microwave Background ◽  
Black Hole Binaries ◽  
Upper Limits ◽  
Merger Rate ◽  
The One

AbstractTwo gravitational wave events, i.e. GW200105 and GW200115, were observed by the Advanced LIGO and Virgo detectors recently. In this work, we show that they can be explained by a scenario of primordial black hole binaries that are formed in the early Universe. The merger rate predicted by such a scenario could be consistent with the one estimated from LIGO and Virgo, even if primordial black holes constitute a fraction of cold dark matter. The required abundance of primordial black holes is compatible with the existing upper limits from microlensing, caustic crossing and cosmic microwave background observations.

scholarly journals Bounds on warm dark matter from Schwarzschild primordial black holes

2021 ◽  
Vol 136 (2) ◽  
Author(s):  
Jérémy Auffinger ◽  
Isabella Masina ◽  
Giorgio Orlando
Keyword(s):  
Beyond Standard Model ◽  
Black Holes ◽  
Black Hole ◽  
Dark Matter ◽  
Energy Density ◽  
The Other ◽  
Primordial Black Hole ◽  
Primordial Black Holes ◽  
Hole Energy ◽  
Upper Limits

AbstractWe consider light dark matter candidates originated from the evaporation of Schwarzschild primordial black holes, with masses in the range $$10^{-5}$$ 10 - 5 –$$10^9$$ 10 9 g. These candidates are beyond standard model particles with negligible couplings to the other particles, so that they interact only gravitationally. Belonging to the category of warm dark matter, they nevertheless spoil structure formation, with a softer impact for increasing values of the candidate spin. Requiring such candidates to fully account for the observed dark matter, we find that the scenario of black hole domination is ruled out for all spin values up to 2. For the scenario of radiation domination, we derive upper limits on the parameter $$\beta $$ β (the primordial black hole energy density at formation over the radiation one), which are less stringent the higher the candidate spin is.

Cosmology, primordial black holes, and supermassive particles

1985 ◽  
Vol 145 (3) ◽  
pp. 369 ◽  
Author(s):  
A.G. Polnarev ◽  
M.Yu. Khlopov
Keyword(s):  
Black Holes ◽  
Primordial Black Holes
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