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The Influence of Black Hole Mass and Accretion Rate on the FRI/FRII Radio Galaxy Dichotomy

Wold, M. and Lacy, M. and Armus, L. (2005) The Influence of Black Hole Mass and Accretion Rate on the FRI/FRII Radio Galaxy Dichotomy. In: Growing Black Holes: Accretion in a Cosmological Context. ESO Astrophysics Symposia. Springer , Berlin, pp. 401-404. ISBN 978-3-540-25275-7.

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We use medium resolution optical spectra of 3CR radio galaxies to estimate their black hole masses and accretion rates. Black hole masses are found from central stellar velocity dispersions, and accretion rates are derived from narrow emission-line luminosities. The sample covers both Fanaroff-Riley (FR) classes; the more powerful FRIIs and the less powerful FRIs. We find that FRIs and FRIIs separate in diagrams of radio luminosity and narrow-line luminosity versus black hole mass. This suggests that, at a given black hole mass, the FRIIs accrete more efficiently, or accrete more matter, than FRIs.

Item Type:Book Section
Related URLs:
URLURL TypeDescription ReadCube access
Lacy, M.0000-0002-3032-1783
Armus, L.0000-0003-3498-2973
Additional Information:© 2005 Springer-Verlag Berlin Heidelberg. First Online: 22 December 2005.
Series Name:ESO Astrophysics Symposia
Record Number:CaltechAUTHORS:20190607-161224850
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96220
Deposited By: Tony Diaz
Deposited On:08 Jun 2019 17:42
Last Modified:16 Nov 2021 17:19

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