The freeze-out phase of SN 1987A - Implications for the light curve

Details The freeze-out phase of SN 1987A - Implications for the light curve The freeze-out phase of SN 1987A - Implications for the light curve

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...408l..25f&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 408, no. 1, p. L25-L28.

Astronomy and Astrophysics

Astrophysics

54

Light Curve, Nuclear Fusion, Supernova 1987A, Abundance, Bolometers, Emission Spectra, Neutron Stars

Scientific paper

After about 800 days, time-dependent effects due to long recombination and cooling times lead to a frozen-in structure of the ejecta of SN 1987A. The result is a higher bolometric luminosity, compared to models where the emitted luminosity is equal to the instantaneous energy input. Good agreement with the observed light curve of SN 1987A is obtained with an initial (Ni-57)/(Ni-56) ratio 2 times the solar (Fe-57)/(Fe-56) ratio, while steady state models require a factor of 2 more. Consistency with both the Co-57 mass from IR line observations, X-ray, and gamma-ray observations, and from models of the nucleosynthesis can thus be obtained.

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