Hard X-rays from supernova 1987A - Results of Mir-Kvant and Granat in 1987-1990 and expectations

Details Hard X-rays from supernova 1987A - Results of Mir-Kvant and Granat in 1987-1990 and expectations Hard X-rays from supernova 1987A - Results of Mir-Kvant and Granat in 1987-1990 and expectations

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..232..211s&link_type=abstract

IN: Gamma-ray line astrophysics; Proceedings of the International Symposium, Paris, France, Dec. 10-13, 1990 (A92-43619 18-90).

Astronomy and Astrophysics

Astronomy

2

Spaceborne Astronomy, Supernova 1987A, X Ray Sources, Cobalt Isotopes, Mir Space Station, Sodium 22, Stellar Envelopes, Titanium Isotopes

Scientific paper

Results of the supernova 1987A hard X-ray observations in 1987-1990 with Mir-Kvant and Granat are presented. They make it possible to estimate the degree of Co-56 mixing over the envelope and set hard restrictions on abundances of radioactive Co-57, Ti-44, and Na-22 produced during the outburst. The upper limit at three standard deviation level on the Co-57/Co-56 ratio inside the envelope is equal to 1.5 of the earth's Fe-57/Fe-56 ratio. Future evolution of the SN1987A hard X-ray luminosity connected mainly with central source is discussed.

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