Physics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ncimc..13..785c&link_type=abstract
Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol. 13 C, July-Aug. 1990, p. 785-787.
Physics
Stellar Evolution, Stellar Models, Supernova 1987A, Supernovae, Gravitational Wave Antennas, Neutrinos, Neutron Spectra, Radiation Detectors, Shock Wave Propagation, Stellar Mass
Scientific paper
Theoretical models are developed to account for neutrino and gravitational-wave observations of SN 1987A. The observational data are briefly characterized, and the problems encountered in using standard stellar-collapse models of SN explosions to explain the observations are discussed. In the proposed new model, the core object is made up of s-matter, a stable phase of quark matter containing u, d, and s quarks and a few electrons (as described by Witten, 1984). The phase transition from an n-star to an s-star would provide a large amount of energy (about 20 MeV/neutron) and would require a high density, like that predicted for collapsed stars with masses near the OV limit. In this scenario, the first Mt. Blanc neutrino event corresponds to n-star formation; the gravitational-wave event corresponds to inner-envelope collapse and neutronization; and the Kamiokande neutrino event represents the collapse of the n-star to an s-star.
Castagnoli Carlo
Masani Alberto
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