Quasars with a Kick -- Black Hole Recoil in Quasars

Details Quasars with a Kick -- Black Hole Recoil in Quasars Quasars with a Kick -- Black Hole Recoil in Quasars

2007-07-24

arxiv.org/abs/0707.3625v1

Astronomy and Astrophysics

Astrophysics

5 pages, to appear in "Black Holes. Poster Papers from the Space Telescope Science Institute Symposium, April 2007," Mario Liv

Scientific paper

Mergers of spinning black holes can give recoil velocities from gravitational radiation up to several thousand km/s. A recoiling supermassive black hole in an AGN can retain the inner part of its accretion disk, providing fuel for continuing AGN activity. Using AGN in the Sloan Digital Sky Survey (SDSS) that show velocity shifts of the broad emission lines relative to the narrow lines, we place upper limits on the incidence of high velocity recoils in AGN. Brief but powerful flares in soft X-rays may occur when bound material falls back into the moving accretion disk.

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