Circumstellar absorption of UV and radio emission from supernovae

Details Circumstellar absorption of UV and radio emission from supernovae Circumstellar absorption of UV and radio emission from supernovae

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...192..221l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 192, no. 1-2, March 1988, p. 221-233. Research supported by the Naturvetenskap

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76

Interstellar Extinction, Radio Emission, Stellar Envelopes, Stellar Models, Supernovae, Ultraviolet Absorption, Absorption Spectra, Compton Effect, Computational Astrophysics, Photoionization, Stellar Mass Ejection, Stellar Winds

Scientific paper

A time-dependent photoionization code was used to study the temperature and ionization structure of the circumstellar gas around supernovae. It demonstrated that the ionizing flux from the supernova photosphere and shock wave can have important consequences for the observed UV spectra and radio flux of the supernova. High column densities of the most important ions in the UV are expected, leading to strong absorption lines. In addition, it is shown that the free-free absorption of radio emission is substantially decreased by gas heating and recombination. The results obtained are applied to radio observations of SN1979c and SN1980k.

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