Are broad optical balmer lines from central accretion disk in PG 1613+658?

Abstract

In this letter, we report positive correlations between broad line width and broad line flux for the broad balmer lines of the long-term observed AGN PG 1613+658. Rather than the expected negative correlations under the widely accepted virialization assumption for AGN BLRs, the positive correlations indicate much different BLR structures of PG 1613+658 from the commonly considered BLR structures which are dominated by the equilibrium between radiation pressure and gas pressure. Therefore, accretion disk origin is preferred for the observed broad single-peaked optical balmer lines of PG 1613+658, because of the mainly gravity dominated disk-like BLRs with radial structures having few effects from radiation pressure.

5 pages, one table and 4 figures. Accepted and to be published in MNRAS Letter

References in corpus (4)

• The Black Hole Mass Scale of Classical and Pseudo Bulges in Active Galaxies
• The flux ratio of the [OIII] 5007,4959 lines in AGN: Comparison with theoretical calculations
• Virial Masses of Black Holes from Single Epoch Spectra of AGN
• Further Evidence for the Accretion Disk Origination of the Double-Peaked Broad H$\alpha$ of 3C390.3

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