SN 1988A in M58 - Departure from Co-56 decay 700 days after explosion

Details SN 1988A in M58 - Departure from Co-56 decay 700 days after explosion SN 1988A in M58 - Departure from Co-56 decay 700 days after explosion

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...378l..41r&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 378, Sept. 10, 1991, p. L41-L44.

Other

5

Cobalt Isotopes, Neutron Stars, Stellar Envelopes, Stellar Mass Accretion, Supernovae, Light Curve, Radioactive Decay, Radioactive Isotopes, Stellar Winds

Scientific paper

Observations of SN 1988A in M58 are presented which show a remarkable departure from Co-56 decay in the optical light curve starting about 700 days since explosion. It is shown that the departure cannot be explained by the contribution from other radioactive isotopes to the late luminosity, and fluorescence in nearby clouds can be excluded as the cause of the emission. Likely causes are a fast pulsar or interaction with circumstellar wind. Mass accretion by a neutron star appears to be a less likely explanation.

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