Variations in emission spectrum over southern radio sources of large angular extent

Details Variations in emission spectrum over southern radio sources of large angular extent Variations in emission spectrum over southern radio sources of large angular extent

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..593w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Nov. 1979, p. 593-600.

Astronomy and Astrophysics

Astronomy

12

Emission Spectra, Extragalactic Radio Sources, Radio Astronomy, Spectrum Analysis, Variability, Galactic Structure, Radiant Flux Density

Scientific paper

Sixteen extragalactic sources of large angular extent have been observed at 5000 MHz with the Parkes 64-m telescope (FWHP 4 arcmin). The structures are compared with those determined at 408 MHz from the Molonglo Cross telescope (FWHP 3 arcmin), and in several cases spectral variations over the sources are apparent. The comparison is extended to other sources for which similar observations are available. It is shown that spectral variations occur more frequently (but not exclusively) in the sources with lower luminosity and that the nature of the variation depends on luminosity.

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