Radio quiet quasar main sequence - a hidden parameter behind it
| Main Authors: | Czerny, B., Du, P., Wang, J.-M., Wildy, C. |
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| Format: | info Proceeding Journal |
| Terbitan: |
, 2016
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/60463 |
Daftar Isi:
- The existence of the hidden parameter behind the properties of the radio-quiet type 1 AGN is known since the work by Boroson & Green. The concept gains importance with an increase in the number of sources in catalogs. It has been recently argued that a single observational parameter R_Fe actually catches the most important AGN properties. However, it still leaves an open issue what this parameter is in the context of basic theoretical parameters of AGN: black hole mass, Eddington ratio, spin and the inclination. We propose that the hidden parameter is the position of the maximum of the AGN broad band band spectrum. This, in the case of the simplest Shakura-Sunyaev disk is equivalent to the maximum temperature of the accretion disk, and is fully determined by the ratio of the Eddington ratio to the mass. This qualitatively explains a decrease of R_Fe with mass and an increase with L/L_Edd. Using the recent values of the black hole masses from Lijiang monitoring of high L/L_Edd objects and the quasars from SDSS catalog we try to produce a conversion between R_Fe and the basic accretion disk parameters.