Radio discovery of a young supernova

Details Radio discovery of a young supernova Radio discovery of a young supernova

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.306..566v&link_type=abstract

Nature (ISSN 0028-0836), vol. 306, Dec. 8, 1983, p. 566-568.

Astronomy and Astrophysics

Astronomy

22

Radio Emission, Radio Sources (Astronomy), Spiral Galaxies, Supernovae, Galactic Evolution, Light Curve, Radio Astronomy, Visible Spectrum

Scientific paper

The observations of a radio source in the northern inner spiral arm of NGC 4258 is reported, noting that the object has been identified as a visual supernova event. The data were gathered at Westerbork and with the VLA. The radio emissions occurred between May 1981 and January 1982, and featured an optically thin, nonthermal spectrum. Flux density data are provided for the 20-21 cm wavelength, demonstrating a steady decline in flux density. Optical data have indicated the source reached a maximum intensity in August 1981, at 13th magnitude. Classification of the supernova as type I or type II has not been accomplished.

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