Gamma-rays, the H-beta line, and models for SN 1987A

Details Gamma-rays, the H-beta line, and models for SN 1987A Gamma-rays, the H-beta line, and models for SN 1987A

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pazh...14.1079c&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 14, Dec. 1988, p. 1079-1085. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

Gamma Ray Astronomy, H Beta Line, Hydrogen, Supernova 1987A, Gas Density, Gas Ionization, Kinetic Energy, Radial Velocity, Stellar Mass Ejection

Scientific paper

A method for determining the concentration and distribution of hydrogen in the outer layers of SN 1987A is proposed. The method uses data on the H-beta profile and on the flux of hard X-rays and gamma-rays at a late stage of evolution (t greater than about 200 days). Estimates of the hydrogen concentration and gradient at a level corresponding to an expansion velocity of 5000 km/s are obtained. These values are in agreement with predicted gasdynamic models of SN 1987A with an envelope mass of 11-15 solar masses and a kinetic energy of 1.3 x 10 to the 51 erg.

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