Estimates of the physical parameters of supernova remnants /SNR/

Details Estimates of the physical parameters of supernova remnants /SNR/ Estimates of the physical parameters of supernova remnants /SNR/

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..45..133g&link_type=abstract

Astrophysics and Space Science, vol. 45, Nov. 1976, p. 133-141. Research supported by the Science Research Council.

Astronomy and Astrophysics

Astrophysics

4

Astrometry, Microwave Emission, Radio Spectra, Supernova Remnants, Astrophysics, Graphs (Charts), Radiant Flux Density

Scientific paper

The recalibrated relation of radio surface brightness and linear diameter of a supernova remnant are used to compile graphs from which the physical parameters of a supernova remnant can easily be found. The physical parameters involved are the distance, the linear diameter, the monochromatic power emitted at 1 GHz, and the total power. All of these parameters can be immediately worked out from the derived graphs, given the mean angular diameter of the SNR, the integrated flux density at 1 GHz and its spectral index. Three well known supernova remnants are used to illustrate the method: W28A1, Monoceros Nebula, and W49B. Some possibilities of absorption by the interstellar medium are discussed for W49B, which shows a curved radio spectrum.

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