Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Carr, Bernard"'
Autor:
Carr, Bernard J., Green, Anne M.
We overview the history of primordial black hole (PBH) research from the first papers around 50 years ago to the present epoch. The history may be divided into four periods, the dividing lines being marked by three key developments: inflation on the
Externí odkaz:
http://arxiv.org/abs/2406.05736
We review the experimental constraints on the parameter $\alpha$ associated with the Generalized Uncertainty Principle (GUP) and the parameter $\beta$ associated with the Generalized Event Horizon (GEH). The Compton-Schwarzschild correspondence impli
Externí odkaz:
http://arxiv.org/abs/2405.04977
Publikováno v:
Physics Reports 1054 (2024) 1
We review numerous arguments for primordial black holes (PBHs) based on observational evidence from a variety of lensing, dynamical, accretion and gravitational-wave effects. This represents a shift from the usual emphasis on PBH constraints and prov
Externí odkaz:
http://arxiv.org/abs/2306.03903
Publikováno v:
Class. Quantum Grav. 39 (2022) 145008
We completely classify the Friedmann-Lema\^{i}tre-Robertson-Walker solutions with spatial curvature $K=0,\pm 1$ for perfect fluids with linear equation of state $p=w\rho $, where $\rho$ and $p$ are the energy density and pressure, without assuming an
Externí odkaz:
http://arxiv.org/abs/2110.13421
Autor:
Carr, Bernard, Kuhnel, Florian
Publikováno v:
SciPost Phys. Lect. Notes 48 (2022)
We review the formation and evaporation of primordial black holes (PBHs) and their possible contribution to dark matter. Various constraints suggest they could only provide most of it in the mass windows $10^{17}$ - $10^{23}\,$g or $10$ - $10^{2}\,M_
Externí odkaz:
http://arxiv.org/abs/2110.02821
Autor:
Carr, Bernard (AUTHOR)
Publikováno v:
New Scientist. 4/1/2023, Vol. 257 Issue 3432, p46-49. 4p. 3 Color Photographs.
Publikováno v:
Mon. Not. Roy. Astron. Soc. 506 3, 3648-3661 (2021)
We consider constraints on primordial black holes (PBHs) in the mass range $( 10^{-18}\text{-}10^{15} )\,M_{\odot}$ if the dark matter (DM) comprises weakly interacting massive particles (WIMPs) which form halos around them and generate $\gamma$-rays
Externí odkaz:
http://arxiv.org/abs/2011.01930
Publikováno v:
Mon. Not. Roy. Astron. Soc. 501 2 (2021), 2029-2043
We consider the observational constraints on stupendously large black holes (SLABs) in the mass range $M \gtrsim 10^{11}\,M_{\odot}$. These have attracted little attention hitherto and we are aware of no published constraints on a SLAB population in
Externí odkaz:
http://arxiv.org/abs/2008.08077
Publikováno v:
Eur. Phys. J. C (2020) 80:1166
We explore some implications of our previous proposal, motivated in part by the Generalised Uncertainty Principle (GUP) and the possibility that black holes have quantum mechanical hair that the ADM mass of a system has the form $M + \beta M_\mathrm{
Externí odkaz:
http://arxiv.org/abs/2006.04892
Autor:
Carr, Bernard, Kuhnel, Florian
Although the dark matter is usually assumed to be some form of elementary particle, primordial black holes (PBHs) could also provide some of it. However, various constraints restrict the possible mass windows to $10^{16}$ - $10^{17}\,$g, $10^{20}$ -
Externí odkaz:
http://arxiv.org/abs/2006.02838