Supernova Neutrinos: The Accretion Disk Scenario

Details Supernova Neutrinos: The Accretion Disk Scenario Supernova Neutrinos: The Accretion Disk Scenario

2006-05-11

arxiv.org/abs/astro-ph/0605281v2

Phys.Rev.D75:023005,2007

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1103/PhysRevD.75.023005

Neutrinos from core collapse supernovae can be emitted from a rapidly accreting disk surrounding a black hole, instead of the canonical proto-neutron star. For Galactic events, detector count rates are considerable and in fact can be in the thousands for Super-Kamiokande. The rate of occurrence of these accreting disks in the Galaxy is predicted to be on the order of 10^-5 yr^-1, yet there is little observational evidence to provide an upper limit on their formation rate. It would therefore be useful to discriminate between neutrinos which have been produced in a proto-neutron star and those which have been produced accretion disks. In order to distinguish between the two scenarios, either the time profile of the neutrino luminosity or the relative fluxes of different neutrino flavors may be considered. There are some signals that would clearly point to one scenario or the other.

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