On the masses of black-holes in radio-loud quasars

Abstract

The central black-hole masses of a sample of radio-loud quasars are estimated by using the data of $H_{\beta }$ line-width and the optical continuum luminosity. The vast majority of the quasars in this sample have black-hole masses larger than $10^8{M}_{\odot }$, while a few quasars may contain relatively smaller black-holes. We found a significant anti-correlation between the radio-loudness and the central black-hole mass. It might imply that the jet formation is governed by the black-hole mass.

5 pages, two figures are added, accepted by MNRAS Letters

References in corpus (1)

• The radio-luminosity - black hole mass correlation for quasars from the FIRST Bright Quasar Survey, and a ``unification scheme'' for radio-loud and radio-quiet quasars

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