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Baryon-poor outflows from rotating black holes

Maurice H. P. M. van Putten

astro-pharXiv:astro-ph/0011067

Abstract

Cosmological gamma-ray bursts are probably powered by systems harboring a rotating black hole. We show that frame-dragging creates baryon-poor outflows in a differentially rotating gap along an open magnetic flux-tube with dissipation P=ΩT(ΩH-2ΩT)Aϕ2, where 2πAϕ denotes the flux in the open tube, for angular velocities ΩH and ΩT of the black hole and the torus, respectively. The output in photon-pair outflow will be reprocessed in an intervening hypernova progenitor wind or the ISM.

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