Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..945g&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, Nov. 1987, p. 945-963. In Russian. In Russian.
Astronomy and Astrophysics
Astronomy
12
Astronomical Spectroscopy, Monte Carlo Method, Radiation Sources, Supernova 1987A, Supernovae, X Ray Astronomy, Cobalt Isotopes, Energy Spectra, Flux Quantization, Pulsars, Radioactive Isotopes, Stellar Envelopes
Scientific paper
X-ray spectra of radiation escaping the supernova envelope are computed using the Monte-Carlo techniques. Two types of hard photon sources are considered: (a) the gamma-rays of 0.1 M_sun; radioactive 56Co decay and (b) the young energetic pulsar. Dominant elementary processes leading to the formation of the spectra are Comptonization and photoabsorption of the electrons of the K-shells of heavy elements. The evolution of X-ray spectra with time is presented. The models with strongly perturbed density distribution (the rarefied phase with dense plasma clouds imbedded), with strong stratification of heavy elements' abundance, with toroidal geometry of the expanding envelope were computed.
Grebenev Sergei A.
Sunyaev Rashid A.
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