Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190..903l&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 190, Mar. 1980, p. 903-924. Research supported by the Science Research
Astronomy and Astrophysics
Astronomy
171
Extragalactic Radio Sources, Luminosity, Radio Astronomy, Radio Spectra, Flux Density, Red Shift
Scientific paper
The paper investigates the relation between radio spectrum and radio luminosity for samples of extragalactic radio sources selected at 178 and 2700 MHz. Spectra were derived for the extended regions of emission in these sources, which we have also classified by morphological types. At low frequencies the degree of spectral curvature is found to be correlated with luminosity for sources with hot-spots. At high frequencies, the correlation between spectral index and luminosity is confirmed and is shown to extend throughout the luminosity range considered. This relation is due mainly to sources with hot-spots and implies an even stronger relation for the hot-spots themselves.
Laing Robert A.
Peacock John A.
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