Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-06-18
Astrophys.J. 614 (2004) 91-100
Astronomy and Astrophysics
Astrophysics
24 pages, 6 figures, accepted by ApJ
Scientific paper
10.1086/423446
(Abridged) Using an empirical relation between the broad line region size and optical continuum luminosity, we estimated the black hole mass and accretion rate for 135 AGNs with double-peaked broad emission lines in two samples. With black hole masses from $3\times 10^7M_\odot$ to $5\times 10^9M_\odot$, these AGNs have the dimensionless accretion rates (Eddington ratios) between 0.001 and 0.1, and the bolometric luminosity between $10^{43}erg/s$ and $10^{46}erg/s$, both being significantly larger than those of several previously known low-luminosity double-peaked AGNs. The optical-X-ray spectra indices, $\alpha_{OX}$, of these high-luminosity double-peaked AGNs is between 1 and 1.9. Modest correlations of the $\alpha_{OX}$ value with the Eddington ratio and bolometric luminosity indicate that double-peaked AGNs with higher Eddington ratio or higher luminosity tend to have larger $\alpha_{OX}$ value. Therefore we suggested that the accretion process in some high-luminosity double-peaked AGNs is probably different from that of low-luminosity objects where an ADAF-like accretion flow was thought to exist. This is also supported by the presence of possible big blue bumps in the spectra of some double-peaked AGNs with higher Eddington ratios. We noticed that the prototype double-peaked emission line AGN, Arp 102B, may be an ``intermediate'' object between the high and low luminosity double-peaked AGNs. In addition, we found an apparent strong anti-correlation between the peak separation of double-peaked profile and Eddington ratio. If it is real, it may provide us a clue to understand why double-peaked broad emission lines were hardly found in luminous AGNs with Eddington ratio larger than 0.1.
Liu Keh-Fei
Wu Xue-Bing
No associations
LandOfFree
Black hole mass and accretion rate of active galactic nuclei with double-peaked broad emission lines 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 Black hole mass and accretion rate of active galactic nuclei with double-peaked broad emission lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Black hole mass and accretion rate of active galactic nuclei with double-peaked broad emission lines will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-203311