Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21344605r&link_type=abstract
American Astronomical Society, AAS Meeting #213, #446.05; Bulletin of the American Astronomical Society, Vol. 41, p.331
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of our recent paper on the question as to whether the distribution of radio-loudness in active galactic nuclei is actually bimodal. There have been claims that radio-loudness depends on black hole mass and Eddington ratio. We investigate these claims using the low redshift broad line AGN sample of Greene & Ho (2007), which consists of 8434 objects at z 10) and radio-quiet (R < 10) objects, but instead fill in a more radio-intermediate population in a continuous fashion. We find that 4.7% of the AGN in the flux-limited subsample are RL based on core radio emission alone. We calculate the radio-loud fraction (RLF) as both a function of black hole mass and Eddington ratio. The RLF decreases (from 13% to 2%) as Eddington ratio increases over 2.5 order of magnitude. The RLF is nearly constant ( 5%) over 4 decades in black hole mass, except for an increase at masses greater than 10^8 solar masses. We find for the FIRST detected subsample that 367 of the RL AGN have black hole masses less than 10^8 solar masses, a large enough number to indicate that RL AGN are not a product of only the most massive black holes in the local universe.
Crenshaw D.
Rafter Stephen E.
Wiita Paul J.
No associations
LandOfFree
Radio Properties of Low Redshift BL AGN does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Radio Properties of Low Redshift BL AGN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio Properties of Low Redshift BL AGN will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1704366