Results 51 to 60 of about 38,917 (207)

Astrophysical constraints on primordial black holes in Brans-Dicke theory

, 2010
We consider cosmological evolution in Brans-Dicke theory with a population of primordial black holes. Hawking radiation from the primordial black holes impacts various astrophysical processes during the evolution of the Universe.
A.S Majumdar, A.W. Strong, B Nayak, B. Nayak, B.J. Carr, B.V. Vainer, B.V. Vainer, C. Mathiazhagan, D. Lindley, D.J. Fixsen ., E.W. Kolb, I. Hawke, I. Musco, I.D. Novikov, J. Yokoyama, L.P Singh, P.D. Nasel'skii, R.A. Sunyaev, S.G. Rubin, S.W. Hawking, Ya.B. Zel'dovich, Ya.B. Zel'dovich, Ya.B. Zel'dovich, Ya.B. Zel'dovich   +23 more
core   +1 more source

Disentangling the potential dark matter origin of LIGO's black holes

, 2017
The nature of dark matter remains one of the biggest open questions in physics. Intriguingly, it has been suggested that dark matter may be explained by another recently observed phenomenon: the detection of gravitational waves by LIGO.
Hanna, Chad, Magee, Ryan
core   +1 more source

Primordial black holes from cosmic necklaces [PDF]

, 2005
Cosmic necklaces are hybrid topological defects consisting of monopoles and strings. We argue that primordial black holes(PBHs) may have formed from loops of the necklaces, if there exist stable winding states, such as coils and cycloops.
A. Avgoustidis, A. Vilenkin, C. Herdeiro, E.J. Copeland, G. Dvali, G. Dvali, J. Garcia-Bellido, K. Hashimoto, M. Gomez-Reino, M.Yu. Khlopov, M.Yu. Khlopov, N. Barnaby, N.T. Jones, T. Matsuda, T. Matsuda, T. Matsuda, T. Matsuda, T. Matsuda, T. Matsuda, T. Matsuda, T. Matsuda, T. Matsuda, T. Matsuda, T. Matsuda, Tomohiro Matsuda   +24 more
core   +5 more sources

DiskScissors: Cutting Arbitrary‐Topology Solids for Bijective Mapping

Computer Graphics Forum, EarlyView.
Abstract An algorithm for cutting solid objects in a topology‐controlled manner is presented. Concretely, given a loop on the object boundary, a disk‐topology cut surface bounded by the loop is constructed in the interior. In contrast to various previous approaches, both disk topology and conformance to the prescribed loop are ensured by construction ...
S. Hinderink, M. Campen
wiley   +1 more source

CLASSICALITY OF PRIMORDIAL FLUCTUATIONS AND PRIMORDIAL BLACK HOLES

International Journal of Modern Physics D, 2001
The production of Primordial Black Holes (PBH) from inflationary perturbations provides a physical process where the effective classicality of the fluctuations does not hold for certain scales. For adiabatic perturbations produced during inflation, this range of scales corresponds to PBH with masses M≪1015 g.
openaire   +2 more sources

Primordial black holes as dark matter [PDF]

Physical Review D, 2016
32 pages, 6 figures, 1 table, 288 references; updated version matching the published version; v4: minor typo ...
Carr, Bernard, Kuhnel, Florian, Sandstad, Marit   +2 more
openaire   +2 more sources

Production of high stellar-mass primordial black holes in trapped inflation

, 2017
Trapped inflation has been proposed to provide a successful inflation with a steep potential. We discuss the formation of primordial black holes in the trapped inflationary scenario.
Cheng, Shu-Lin, Lee, Wolung, Ng, Kin-Wang   +2 more
core   +1 more source

Constraints on Cosmic Strings due to Black Holes Formed from Collapsed Cosmic String Loops [PDF]

, 1993
The cosmological features of primordial black holes formed from collapsed cosmic string loops are studied. Observational restrictions on a population of primordial black holes are used to restrict $f$, the fraction of cosmic string loops which collapse ...
A. Albrecht, Alexander Polnarev, Alexander Vilenkin, B. Allen, B. Allen, B. Allen, B. Allen, B. J. Carr, B. J. Carr, B. J. Carr, Bernard J. Carr, C. Barrabes, C. E. Fichtel, David Bennett, Don N. Page, Don N. Page, Evalyn Gates, F. Halzen, J. H. MacGibbon, J. M. Quashnock, J. Quashnock, Jane H. MacGibbon, Jaume Garriga, Jaume Garriga, John D. Barrow, M. A. Markov, Mark Hindmarsh, R. J. Scherrer, R. R. Caldwell, R. R. Caldwell, S. W. Hawking, S. W. Hawking, T. W. B. Kibble   +32 more
core   +3 more sources

Establishing Shape Correspondences: A Survey

Computer Graphics Forum, EarlyView.
Abstract Shape correspondence between surfaces in 3D is a central problem in geometry processing, concerned with establishing meaningful relations between surfaces. While all correspondence problems share this goal, specific formulations can differ significantly: Downstream applications require certain properties that correspondences must satisfy ...
A. Heuschling, H. Meinhold, L. Kobbelt
wiley   +1 more source

Spinning primordial black holes from first order phase transition

Journal of High Energy Physics
We conduct a novel study to obtain the initial spin of the primordial black holes created during a first-order phase transition due to delayed false vacuum decay.
Indra Kumar Banerjee, Ujjal Kumar Dey
doaj   +1 more source