Evidence for the cosmological evolution of active galaxies

Details Evidence for the cosmological evolution of active galaxies Evidence for the cosmological evolution of active galaxies

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980rspta.296..367w&link_type=abstract

(Royal Society, Discussion on the Origin and Early Evolution of the Galaxies, London, England, Feb. 14, 15, 1979.) Royal Society

Astronomy and Astrophysics

Astronomy

21

Active Galaxies, Astronomical Models, Big Bang Cosmology, Galactic Evolution, Luminous Intensity, Radial Distribution, Radio Sources (Astronomy), Red Shift

Scientific paper

Investigations of the radial distribution of quasars and radio galaxies attest to a period of relatively violent activity at earlier epochs of the Universe. The evidence is from applications of the luminosity-volume test, and from interpretations of source counts at both radio and optical wavelengths. Here these techniques are discussed in the light of modern data. In addition to confirming the existence of powerful cosmic evolution, these data allow some detail of the evolution to be delineated, and indicated marked differences among the evolutionary behaviors of different populations of active galaxies. Some physical considerations are briefly described.

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