Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-11-16
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
10 pages, submitted to MNRAS
Scientific paper
We use 62,185 quasars from the Sloan Digital Sky Survey DR5 sample and standard virial mass scaling laws based on the widths of H beta, Mg II, and C IV lines and adjacent continuum luminosities to explore the maximum mass of quasars as a function of redshift, which we find to be sharp and evolving. This evolution is in the sense that high-mass black holes cease their luminous accretion at higher redshift than lower-mass black holes. Further, turnoff for quasars at any given mass is more highly synchronized than would be expected given the dynamics of their host galaxies. We investigate potential signatures of the quasar turnoff mechanism, including a dearth of high-mass quasars at low Eddington ratio. These new results allow a closer examination of several common assumptions used in modeling quasar accretion and turnoff.
Elvis Martin
Steinhardt Charles L.
No associations
LandOfFree
The Quasar Mass-Luminosity Plane II: High Mass Turnoff Evolution and a Synchronization Puzzle does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Quasar Mass-Luminosity Plane II: High Mass Turnoff Evolution and a Synchronization Puzzle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Quasar Mass-Luminosity Plane II: High Mass Turnoff Evolution and a Synchronization Puzzle will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-649372