Results 51 to 60 of about 176,413 (293)

ALP dark matter in a primordial black hole dominated universe [PDF]

open access: yesPhysical Review D, 2021
We investigate the phenomenological consequences of axion-like particle (ALP) dark matter with an early matter domination triggered by primordial black holes (PBHs).
N. Bernal   +3 more
semanticscholar   +1 more source

Towards a reliable reconstruction of the power spectrum of primordial curvature perturbation on small scales from GWTC-3

open access: yesPhysics Letters B, 2023
Primordial black holes (PBHs) can be both candidates of dark matter and progenitors of binary black holes (BBHs) detected by the LIGO-Virgo-KAGRA collaboration.
Li-Ming Zheng   +4 more
doaj   +1 more source

Primordial Kerr Black Holes [PDF]

open access: yesProceedings of 40th International Conference on High Energy physics — PoS(ICHEP2020), 2021
Primordial Black Holes (PBHs) are appealing candidates for dark matter in the universe but are severely constrained by theoretical and observational constraints. We will focus on the Hawking evaporation limits extended to Kerr black holes. In particular, we will discuss the possibility to distinguish between black holes of primordial and of stellar ...
Arbey, Alexandre   +2 more
openaire   +2 more sources

Probing modified Hawking evaporation with gravitational waves from the primordial black hole dominated universe [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics
It has been recently proposed that Hawking evaporation might slow down after a black hole has lost about half of its mass. Such an effect, called “memory burden”, is parameterized as a suppression in the mass loss rate by negative powers n of the black ...
Shyam Balaji   +4 more
semanticscholar   +1 more source

Detailed calculation of primordial black hole formation during first-order cosmological phase transitions [PDF]

open access: yesPhysical Review D, 2021
Primordial black holes could potentially form during a first-order cosmological phase transition due to a buildup of particles which are predominantly reflected from the advancing bubble walls.
M. Baker   +3 more
semanticscholar   +1 more source

One-loop power spectrum in ultra slow-roll inflation and implications for primordial black hole dark matter [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics
We apply the in-in formalism to address the question of whether the size of the one-loop spectrum of curvature fluctuations in ultra-slow-roll inflation models designed for producing a large population of primordial black holes implies a breakdown of ...
Guillermo Ballesteros   +1 more
semanticscholar   +1 more source

Star Clusters with Primordial Binaries: III. Dynamical Interaction between Binaries and an Intermediate Mass Black Hole [PDF]

open access: yes, 2006
We present the first study of the dynamical evolution of an isolated star cluster that combines a significant population of primordial binaries with the presence of a central black hole.
Ardi, E.   +3 more
core   +2 more sources

Reconstruction of primordial power spectrum of curvature perturbation from the merger rate of primordial black hole binaries [PDF]

open access: yes, 2021
The properties of primordial curvature perturbations on small scales are still unknown while those on large scales have been well probed by the observations of the cosmic microwave background anisotropies and the large scale structure.
Rampei Kimura   +3 more
semanticscholar   +1 more source

Primordial black hole production during first-order phase transitions [PDF]

open access: yesPhysical Review D, 2021
Jing Liu1,2,∗ Ligong Bian3,4,† Rong-Gen Cai5,2,1,‡ Zong-Kuan Guo5,2,1,§ and Shao-Jiang Wang5¶ School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024 ...
Jing Liu   +4 more
semanticscholar   +1 more source

Primordial black holes [PDF]

open access: yesResearch in Astronomy and Astrophysics, 2010
Invited contribution to Recent Advances on the Physics of Compact Objects and Grvitational Waves, 2007, Ed.
openaire   +3 more sources

Home - About - Disclaimer - Privacy