Determinations of the cosmological deceleration parameter based on various quasar subsets

Details Determinations of the cosmological deceleration parameter based on various quasar subsets Determinations of the cosmological deceleration parameter based on various quasar subsets

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982cha%26a...6...48c&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 6, Issue 1, p. 48-53.

Astronomy and Astrophysics

Astrophysics

Scientific paper

Published determinations of the deceleration parameter qo based on various selected subsets are reviewed and a uniform re-determination is made according to a procedure given in /1/.
The resulting q0-values from 8 largely independant samples of radio quasars all fall within the 4σ range obtained in /1/, namely, 1.0 <= q0 <= 3.5. The most important assumption made is that the characteristic luminosity of radio quasars is independant of the cosmic epoch. Thus, unless radio quasars at earlier times were much more luminous than the later ones, the universe is probably closed.

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