Evidence for Early or Efficient Black-Hole Growth

Details Evidence for Early or Efficient Black-Hole Growth Evidence for Early or Efficient Black-Hole Growth

2004-01-21

arxiv.org/abs/astro-ph/0401430v1

Astronomy and Astrophysics

Astrophysics

4 pages, 4 eps figures. Contribution to the proceedings of `AGN Physics with the Sloan Digital Sky Survey' conference (July 20

Scientific paper

Mass estimates, based on scaling relationships, are presented of central
black holes in luminous quasars at a range of redshifts (z < 0.5, 1.2 ~< z ~<
6.3). The data show that very massive (about 10^9 solar masses or larger) black
holes appear already at z ~ 6, indicating that they form very early or very
fast.

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