G33.2-0.6, an old supernova remnant with a spectral break

Details G33.2-0.6, an old supernova remnant with a spectral break G33.2-0.6, an old supernova remnant with a spectral break

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...106..314r&link_type=abstract

Astronomy and Astrophysics, vol. 106, no. 2, Feb. 1982, p. 314-316.

Astronomy and Astrophysics

Astronomy

9

Astronomical Spectroscopy, Interstellar Matter, Radio Astronomy, Stellar Envelopes, Stellar Evolution, Supernova Remnants, Angular Resolution, Astronomical Maps, Stellar Spectra, Stellar Spectrophotometry, Telescopes

Scientific paper

Sensitive 2.7 GHz and 4.75 GHz observations with the Effelsberg 100-m telescope have resulted in the detection of the weak shell-type source G33.2-0.6. Its nonthermal spectral index of alpha equals 0.7 + or - 0.2 (S approximately equal to nu to the -alpha power) classifies it as a supernova remnant (SNR). The source is at the limits of published low frequency surveys, suggesting a spectral break as seen in a few other old supernova remnants. This type of source is of special interest as an aid to understanding the evolution of SNR and their interaction with the interstellar medium.

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