The 10 year radio light curves for SN 1979C

Details The 10 year radio light curves for SN 1979C The 10 year radio light curves for SN 1979C

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...380..161w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 380, Oct. 10, 1991, p. 161-166.

Astronomy and Astrophysics

Astrophysics

80

Light Curve, Radio Emission, Stellar Winds, Supernova Remnants, Brightness Temperature, Stellar Mass, Very Large Array (Vla)

Scientific paper

New observations are presented of the radio supernova SN 1979 C made with the VLA at wavelengths of 20, 6, and 2 cm from March 1985 through December 1990, augmenting previous observations which began only 8 days after optical maximum in April 1979 and exended through November, 1984. It is found that the 'mini-shell' model of Chevalier (1984) still provides the best representation of these more complete light curves at all three wavelengths. Shorter period fluctuations in the observations are real and are probably due to emission efficiency variations caused by structure in the presupernova stellar wind density. Evidence is also found for more than 1 solar mass lost from the progenitor star in the presupernova stellar wind. This suggests that the star's mass was originally not less than 13 solar masses. These observations represent the longest and most complete data set available for the emission from any supernova in any wavelength band.

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