Indications for black hole formation from neutrino observations in SN1987a.
Abstract
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.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- June 1987
- Bibcode:
- 1987A&A...180L..20H
- Keywords:
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- Black Holes (Astronomy);
- Cosmology;
- Neutrinos;
- Supernova 1987a;
- Neutron Stars;
- Star Formation;
- Astrophysics