Stellar mass primordial black holes as cold dark matter

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Sobrinho, JLG (Author) Other; Augusto, P (Author) FMUP

Journal

Title: Monthly Notices of the Royal Astronomical Society

Vol. 496

Pages: 60-66

ISSN: 0035-8711

Publisher: Oxford University Press

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-00S-H27

DOI: 10.1093/mnras/staa1437

Abstract (EN): Primordial black holes (PBHs) might have formed in the early Universe due to the collapse of density fluctuations. PBHs may act as the sources for some of the gravitational waves recently observed. We explored the formation scenarios of PBHs of stellar mass, taking into account the possible influence of the QCD phase transition, for which we considered three different models: crossover model, bag model, and lattice fit model. For the fluctuations, we considered a running-tilt power-law spectrum; when these cross the similar to 10(-9)-10(-1)- s Universe horizon they originate 0.05-500 M-circle dot PBHs that could (i) provide a population of stellar mass PBHs similar to the ones present on the binaries associated with all-known gravitational wave sources and (ii) constitute a broad-mass spectrum accounting for similar to 76 per cent of all cold dark matter in the Universe.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7