Circumstellar matter of SN1987A and soft X-ray emission

Details Circumstellar matter of SN1987A and soft X-ray emission Circumstellar matter of SN1987A and soft X-ray emission

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.335..804m&link_type=abstract

Nature (ISSN 0028-0836), vol. 335, Oct. 27, 1988, p. 804-806.

Physics

21

Cosmic X Rays, Emission Spectra, Stellar Envelopes, Supernova 1987A, Absorption Spectra, Density Distribution, Light Curve, Shock Waves, Stellar Evolution, Thermal Emission

Scientific paper

X-ray emission from supernova 1987A has been observed continually by the Ginga satellite since July 1987. In January 1988, X-ray emission in the range 6 - 16 keV flared up, on a timescale of a few weeks, to about three times the level of the previous three months. The authors interpret the flaring as the result of interaction of the supernova ejecta with pre-existing circumstellar matter, whose density distribution was peaked because material blown off from the progenitor star ran into slower-moving material ejected during an earlier stage of the star's life.

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