Results 61 to 70 of about 176,413 (293)
Turning in the landscape: A new mechanism for generating primordial black holes
Physics Letters B, 2023 We propose a new model-independent mechanism for producing primordial black holes from a period of multi-field inflation. This requires an enhancement of primordial fluctuations at short scales compared to their value at CMB scales.
Jacopo Fumagalli +3 more
doaj +1 more source
Clusters of Primordial Black Holes [PDF]
The European Physical Journal C, 2019 v2: both the text and bibliography are essentially extended, coincides with EPJC ...
Belotsky K. +9 more
openaire +4 more sources
Hawking-Moss transition with a black hole seed
Journal of High Energy Physics, 2020 We extend the concept of Hawking-Moss, or up-tunnelling, transitions in the early universe to include black hole seeds. The black hole greatly enhances the decay amplitude, however, order to have physically consistent results, we need to impose a new ...
Ruth Gregory +3 more
doaj +1 more source
Quantum aspects of black holes [PDF]
, 2002 This is a brief introduction to quantum aspects of black holes, addressed at an astrophysics-oriented audience. The topics are: The laws of black-hole mechanics, Hawking radiation, interpretation of entropy, and primordial black holes.Comment: 20 pages ...
Kiefer, Claus
core +2 more sources
Did NANOGrav See a Signal from Primordial Black Hole Formation? [PDF]
Physical Review Letters, 2020 We show that the recent NANOGrav result can be interpreted as a stochastic gravitational wave signal associated to formation of primordial black holes from high-amplitude curvature perturbations.
V. Vaskonen, H. Veermäe
semanticscholar +1 more source
Dynamics of Primordial Black Hole Formation [PDF]
, 1999 We present a numerical investigation of the gravitational collapse of horizon-size density fluctuations to primordial black holes (PBHs) during the radiation-dominated phase of the Early Universe.
Jedamzik, K. (Chicago Univ., IL (United States). Dept. of Astronomy and Astrophysics) +2 more
core +2 more sources
Primordial black hole evolution in two-fluid cosmology [PDF]
, 2020 Several processes in the early universe might lead to the formation of primordial black holes with different masses. These black holes would interact with the cosmic plasma through accretion and emission processes.
Gutiérrez, Eduardo M. +2 more
core +2 more sources
Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914. [PDF]
Physical Review Letters, 2016 We point out that the gravitational-wave event GW150914 observed by the LIGO detectors can be explained by the coalescence of primordial black holes (PBHs).
M. Sasaki +3 more
semanticscholar +1 more source
Prospects for probing gravitational waves from primordial black hole binaries [PDF]
Physical Review D, 2021 We study the prospects of future gravitational wave (GW) detectors in probing primordial black hole (PBH) binaries. We show that across a broad mass range from $10^{-5}M_\odot$ to $10^7M_\odot$, future GW interferometers provide a potential probe of the ...
O. Pujolàs, V. Vaskonen, H. Veermäe
semanticscholar +1 more source
Dark fluxes from accreting black holes through several mechanisms
European Physical Journal C: Particles and Fields, 2022 We discuss the possibility that accreting black hole systems can be sources for dark matter flux through several different mechanisms. We firstly discuss two types of systems‘: coronal thermal plasmas around supermassive black holes in active galactic ...
Rong-Gen Cai +3 more
doaj +1 more source