Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...198l...5g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 198, no. 1-2, June 1988, p. L5-L8.
Astronomy and Astrophysics
Astrophysics
Binary Stars, Neutrinos, Neutron Stars, Particle Emission, Supernova 1987A, Gravitational Waves, Stellar Models
Scientific paper
An eccentric neutron-star binary, formed in a fast rotating supernova collapse, whose orbit decays due to emission of gravitational radiation, is studied. Consideration is given to the conditions for an enhanced neutrino emission at periastron passages that could result in a detectable modulation of the neutrino light curve with the orbital period. The observable signatures of such a scenario could also include a gap in the neutrino emission and an additional modulation due to the general relativistic periastron rotation. These signatures could be reliably tested in future Galactic supernovae. The model is applied to SN 1987A, and it is found that it can account consistently for the gap in the neutrino data, as well as for the apparent 200-msec periodicity. However, due to the small number of events, the significance of these features is not high.
Goldman Itzhak
Kovner Israel
Mazeh Tsevi
Nussinov Shmuel
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