Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Black hole mass and accretion rate of active galactic nuclei with
  double-peaked broad emission lines   (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.

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The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol