Black-hole mass and the formation of radio jets in quasars

M J Kukula, J S Dunlop, R J McLure

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

We summarise the results of a major Hubble Space Telescope imaging study of the host galaxies of radio-loud and radio-quiet quasars. We find that for absolute magnitudes M-R < -24 the hosts of both types of quasar are massive elliptical galaxies. By applying the relation between galaxy spheroid mass and black-hole mass derived for nearby inactive galaxies we estimate the masses of the central black holes in the quasars and find the first signs of a difference between radio-loud and radio-quiet objects. The black-hole masses of the radio-loud quasars (RLQs) are systematically larger than those of radio-quiet quasars (RQQs) of similar optical luminosity. The implications of this result for the origins of radio loudness are discussed.

Original languageEnglish
Title of host publicationMASS OUTFLOW IN ACTIVE GALACTIC NUCLEI: NEW PERSPECTIVES
EditorsDM Crenshaw, SB Karemer, IM George
Place of PublicationSAN FRANCISCO
PublisherASTRONOMICAL SOC PACIFIC
Pages245-250
Number of pages6
ISBN (Print)1-58381-095-1
Publication statusPublished - 2002
EventWorkshop on Mass Outflow in Active Galactic Nuclei: New Perspectives - WASHINGTON
Duration: 8 Mar 200110 Mar 2001

Conference

ConferenceWorkshop on Mass Outflow in Active Galactic Nuclei: New Perspectives
CityWASHINGTON
Period8/03/0110/03/01

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