Evidence for Rapidly Spinning Black Holes in Quasars

Details Evidence for Rapidly Spinning Black Holes in Quasars Evidence for Rapidly Spinning Black Holes in Quasars

2006-03-30

arxiv.org/abs/astro-ph/0603813v1

Astrophys.J.642:L111-L114,2006

Astronomy and Astrophysics

Astrophysics

4 page in emulate5.sty, 3 figures. accepted by ApJL

Scientific paper

10.1086/504842

It has long been believed that accretion onto supermassive black holes powers quasars, but there has been relatively few observational constraints on the spins of the black holes. We address this problem by estimating the average radiative efficiencies of a large sample of quasars selected from the Sloan Digital Sky Survey, by combining their luminosity function and their black hole mass function. Over the redshift interval $0.4

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