Some evidence supporting the cosmological evolution of flat-spectrum quasars

Details Some evidence supporting the cosmological evolution of flat-spectrum quasars Some evidence supporting the cosmological evolution of flat-spectrum quasars

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.183p..21b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 183, May 1978, p. 21P-27P.

Astronomy and Astrophysics

Astronomy

3

Microwave Emission, Quasars, Radio Astronomy, Stellar Evolution, Stellar Spectra, Cosmology, Red Shift, Stellar Luminosity

Scientific paper

Application of the luminosity-volume test to a complete sample of quasi-stellar radio sources selected at 1400 MHz gives mean V/Vm values of about 0.70 + or - 0.05 for both the steep-(spectral index greater than 0.5) and flat-(spectral index less than 0.5) spectrum sources. In view of this finding, it may be premature to conclude that flat-spectrum quasars do not take part in the cosmological evolution of powerful radio sources.

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