Quasar evolution: black hole mass and accretion rate determination

Details Quasar evolution: black hole mass and accretion rate determination Quasar evolution: black hole mass and accretion rate determination

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..238...83d&link_type=abstract

Black Holes from Stars to Galaxies -- Across the Range of Masses. Edited by V. Karas and G. Matt. Proceedings of IAU Symposium #

Physics

Scientific paper

Accurate measurements of line properties are crucial to understand the physics of the BLR (Broad Line Region) in quasars. This region consists of clouds that are the closest to the central engine and cannot possibly be spatialy resolved (they are at distances of only a few light days). The only way to study them is with high S/N spectra. We present here a compilation of our optical and IR data for a large sample of quasars, and their analysis within the framework of the E1 parameter space, which could be viewed as a surrogate H-R diagram for quasars. The physical parameters underlying evolution most likely involved are: Black Hole mass and accretion rate (which we determine from line and continuum measurements). We briefly discuss the caveats of these determinations.

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