Baryon-poor outflows from rotating black holes
Abstract
Description
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 $P=Ω_T(Ω_H-2Ω_T)A_ϕ^2$, where $2πA_ϕ$ denotes the flux in the open tube, for angular velocities $Ω_H$ and $Ω_T$ 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.
Subm PRL (revised and updated according to Phys. Rep. 345, 1 (2001))
Subm PRL (revised and updated according to Phys. Rep. 345, 1 (2001))