The cosmic MeV neutrino background as a laboratory for black hole formation

Autor: Hasan Yüksel, Matthew D. Kistler
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Physics Letters B, Vol 751, Iss C, Pp 413-417 (2015)
Druh dokumentu: article
ISSN: 0370-2693
1873-2445
DOI: 10.1016/j.physletb.2015.10.055
Popis: Calculations of the cosmic rate of core collapses, and the associated neutrino flux, commonly assume that a fixed fraction of massive stars collapse to black holes. We argue that recent results suggest that this fraction instead increases with redshift. With relatively more stars vanishing as “unnovae” in the distant universe, the detectability of the cosmic MeV neutrino background is improved due to their hotter neutrino spectrum, and expectations for supernova surveys are reduced. We conclude that neutrino detectors, after the flux from normal SNe is isolated via either improved modeling or the next Galactic SN, can probe the conditions and history of black hole formation.
Databáze: Directory of Open Access Journals
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