Neutrino-antineutrino annihilation around a collapsar

Details Neutrino-antineutrino annihilation around a collapsar Neutrino-antineutrino annihilation around a collapsar

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...175..309b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 175, no. 1-2, March 1987, p. 309-311.

Astronomy and Astrophysics

Astronomy

19

Annihilation Reactions, Black Holes (Astronomy), Gamma Ray Bursts, Gravitational Collapse, Neutrinos, X Rays, Electrons, Gravitational Effects, Positrons, Stellar Magnetic Fields

Scientific paper

Stellar collapse is accompanied by the emission of Eν ≡ 10 MeV neutrinos and antineutrinos with an energy output Wν ≡ 6×1053erg. Annihilation of these particles (ν+ν → e++e-) in the vicinity of a collapsing object (collapsar) results in the production of an X-ray or γ-ray burst. The fraction of neutrino energy output transferred to the X-ray burst can reach α ≡ 6×10-6, with the energy output in the X-ray burst thus being Wx ≡ 3×1048erg. Searching for such bursts could be an efficient means of observing stellar collapses not accompanied by shell ejection.

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