The late behavior of supernova 1987A. I - The light curve. II - Gamma-ray transparency of the ejecta

  title={The late behavior of supernova 1987A. I - The light curve. II - Gamma-ray transparency of the ejecta},
  author={W. David Arnett and Albert Fu},
  journal={The Astrophysical Journal},
Observations of the late (t = 20-1500 days) bolometric light curve and the gamma-lines and X-rays from supernova 1987A are compared to theoretical models. It is found that 0.073 + or - 0.015 solar masses of freshly synthesized Ni-56 must be present to fit the bolometric light curve. The results place limits on the luminosity and presumed period of the newly formed pulsar/neutron star. In the second half of the paper, the problem of computing the luminosities in gamma-ray lines and in X-rays… 
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