Indications for black hole formation from neutrino observations in SN 1987a

Details Indications for black hole formation from neutrino observations in SN 1987a Indications for black hole formation from neutrino observations in SN 1987a

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...180l..20h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 180, no. 1-2, June 1987, p. L20-L22.

Astronomy and Astrophysics

Astronomy

23

Black Holes (Astronomy), Cosmology, Neutrinos, Supernova 1987A, Neutron Stars, Star Formation

Scientific paper

Neutrinos detected by both the KAMIOKA and IMB experiments, five hours after the neutrino pulse seen in the Mont Blanc experiment, indicate that the neutron star formed in the supernova SN 1987A in the LMC may have collapsed further to a black hole. Since this should have happened within less than a second, the KAMIOKA-data suggest the arrival of two distinct groups of neutrinos with different rest masses. The six events arriving during the first second can be fitted by a rest mass of 7.6(+4, -3) eV/c2, which would be still consistent with the previous estimate from the Mont Blanc data (Hillebrandt et al. 1987A). The second group requires a larger rest mass of 69(+24, -45) eV/c2.

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