Evolution of AGN Broad Line Emission

Moshe Elitzur (Berkeley) - September 22, 2014 at 12:10 pm

Apart from viewing-dependent obscuration, intrinsic broad-line emission from active galactic nuclei (AGN) follows an evolutionary sequence as the accretion rate onto the central black hole is decreasing. Outstanding properties of this evolution are: (1) The fraction of the AGN bolometric luminosity L converted to broad line emission (the broad lines "covering factor") is decreasing with L. (2) Double-peaked profiles emerge along the sequence. (3) The evolution is controlled, at least in part, by the parameter L/M^{2/3}, where M is the black hole mass. I will show that the simultaneous emergence of such three disparate properties arises naturally in the disk-wind scenario for the AGN broad-line region.

The seminar will be held in B-1 Hearst Field Annex.


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