Supernova 1987 A - Envelope metallicity and the nature of the soft X-ray component

Details Supernova 1987 A - Envelope metallicity and the nature of the soft X-ray component Supernova 1987 A - Envelope metallicity and the nature of the soft X-ray component

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208l..11m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. L11-L14.

Astronomy and Astrophysics

Astrophysics

1

Metallicity, Stellar Envelopes, Supernova 1987A, X Ray Sources, Cobalt Isotopes, Monte Carlo Method, Neutron Stars, X Ray Spectra

Scientific paper

Observed X-ray spectra contain information on the metallicity of the expanding envelope of SN 1987A. Using a Monte Carlo code to simulate the Compton degradation of the Co-56-produced gamma-rays, the emerging X-ray spectrum for various metallicities is constructed. The observed spectra are compatible with a low metal abundance, while an additional soft component, independent of the Co-56 source is probably required in order to account for the data. The evolution of the spectral hardness is used as a sensitive indicator of the nature of the soft component, and of the possible contribution of an imbedded pulsar to the X-ray spectrum.

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