Signatures of black hole spin in galaxy evolution

Details Signatures of black hole spin in galaxy evolution Signatures of black hole spin in galaxy evolution

2009-05-29

arxiv.org/abs/0905.4782v1

Astrophys.J.699:L52-L54,2009

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

ApJL accepted

Scientific paper

10.1088/0004-637X/699/1/L52

We explore the connection between black hole spin and AGN power by addressing the consequences underlying the assumption in the recent literature that the gap region between accretion disks and black holes is fundamental in producing strong, spin-dependent, horizon-threading magnetic fields. Under the additional assumption that jets and outflows in AGN are produced by the Blandford-Znajek and Blandford-Payne mechanisms, we show that maximum jet/outflow power is achieved for accretion onto black holes having highly retrograde spin parameter, an energetically excited yet unstable gravitomagnetic configuration.

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