Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13.1027s&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, Dec. 1987, p. 1027-1041. In Russian. In Russian. In Russian.
Astronomy and Astrophysics
Astronomy
12
Emission Spectra, Spaceborne Astronomy, Stellar Spectrophotometry, Supernovae, X Ray Sources, Gas Heating, Radiant Flux Density, Shock Waves, Spectral Bands, Stellar Models
Scientific paper
1987 August 10, hard X-ray emission from the region of supernova 1987A was detected. A set of observations up to September 15 allowed to localize a hard X-ray source (its position coincides with the supernova's with accuracy 10 arcmin) and to determine its spectrum in the 20 - 300 keV band. Upper flux limits in the 3 - 20 keV and 300 - 1000 keV spectral bands were obtained. Upper limits are set on the emission measure of hot gas, heated by the shock wave, on the density of the gas before the front of the shock wave and the mass loss rate several tenth of years before the star explosion. The theoretical models are in good agreement with the observational data.
Al-Emam O.
Bezler M.
Boyarskiy M.
Brinkman Albert C.
Chulkov I.
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