The radio-luminosity -- black hole mass correlation for quasars from the FIRST Bright Quasar Survey, and a proposed ``Unification Scheme" for radio-loud and radio-quiet quasars

Details The radio-luminosity -- black hole mass correlation for quasars from the FIRST Bright Quasar Survey, and a proposed ``Unification Scheme" for radio-loud and radio-quiet quasars The radio-luminosity -- black hole mass correlation for quasars from the FIRST Bright Quasar Survey, and a proposed ``Unification Scheme" for radio-loud and radio-quiet quasars

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.7406l&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #74.06; Bulletin of the American Astronomical Society, Vol. 32, p.1520

Astronomy and Astrophysics

Astronomy

Scientific paper

Several independent lines of evidence now point to a correlation between black hole mass, Mh, and radio-luminosity. In this paper we discuss the correlation for quasars from the FIRST Bright Quasar Survey. These quasars fill in the gap between the radio-loud and radio-quiet quasars in the radio-luminosity -- optical-luminosity plane. We find that the corresponding gap in the Mh -- radio luminosity correlation is filled by the FIRST quasars. There is thus a continuous variation of radio luminosity with Mh, and no need for a ``switch'' at some set of critical parameter values to turn on powerful radio jets. The range of black hole masses associated with the most radio-luminous quasars is small, and therefore the radio-optical correlation for radio-bright quasars is essentially a correlation of accretion rate relative to the Eddington limit, λ , and radio-luminosity. We therefore suggest a new scheme to ``unify'' radio-loud and radio-quiet objects in which radio luminosity Mh{1.8 +/- 0.2}λ 0.3-1.0.

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