Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...201l..19m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 201, no. 1, July 1988, p. L19-L22. DFG-supported research.
Astronomy and Astrophysics
Astronomy
5
Neutron Stars, Pulsars, Stellar Spectra, Supernova 1987A, X Ray Astronomy, Astronomical Models, Monte Carlo Method, Stellar Envelopes
Scientific paper
Monte Carlo calculations of the emergence of X-rays and gamma rays from the envelope of SN 1987 A are reported. Assuming that there exists an X-ray emitting pulsar at the center, it is found that, if the pulsar is about as luminous as the present-day Crab, it may be possible to detect the breakout at about 20 months. The pulsar should emerge first in the 6-16-keV band covered by Ginga. About 6 months later it would appear in the 20-45-keV band of MIR-HEXE. Because the optical depth of the envelope at breakout is still substantial (about 4), pulses may not be detected straightaway. These conclusions are based on a simple homogeneous model for the envelope and do not depend on whether or not Co-56 is mixed into the outer layers.
Kirk John G.
Mastichiadis Apostolos
Oegelman Hakki
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