Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pazh...16...61l&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 16, Jan. 1990, p. 61-77. In Russian. In Russian. In Russian.
Astronomy and Astrophysics
Astronomy
3
Hydrodynamic Equations, Shock Wave Propagation, Stellar Envelopes, Stellar Structure, Gas Expansion, Propagation Velocity, Roots Of Equations, Supernova 1987A
Scientific paper
Consideration is given to the self-similar solution to the hydrodynamic equations for the case when the outermost stellar layers are expanding after the emergence of a shock wave at the stellar surface. The conditions for validity of the self-similar solution are specified and calculations are performed for adiabatic indices gamma between 4/3 and 5/3 and for peripheral polytropic indices n between 1 and 15. It is shown that the self-similar solution describes the first three minutes of the SN 1987A outburst, when a soft X-ray pulse was generated. The increase in velocity of the outermost layer of SN 1987A during the expansion of matter in a vacuum after the emergence of a shock wave is estimated.
Litvinova Yu. I.
Nadyozhin D. K.
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