D. Garofalo 2009 ApJ 699 L52 doi:10.1088/0004-637X/699/1/L52
D. Garofalo
Show affiliationsWe explore the connection between black hole spin and active galactic nucleus (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 AGNs 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 parameters, an energetically excited yet unstable gravitomagnetic configuration.
98.62.Js Galactic nuclei (including black holes), circumnuclear matter, and bulges
98.62.En Electric and magnetic fields
98.62.Nx Jets and bursts; galactic winds and fountains
98.62.Ai Origin, formation, evolution, age, and star formation
Issue 1 (2009 July 1)
Received 2009 May 4, accepted for publication 2009 May 28
Published 2009 June 15
D. Garofalo 2009 ApJ 699 L52
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