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arXiv · 1203.4125

The role of the ergosphere in the Blandford-Znajek process

Milton Ruiz·Carlos Palenzuela·Filippo Galeazzi·Carles Bona
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Abstract

The Blandford-Znajek process, one of the most promising model for powering the relativistic jets from black holes, was initially introduced as a mechanism in which the magnetic fields extract energy from a rotating black hole. We study the evolution of force-free electromagnetic fields on regular spacetimes with an ergosphere, which are generated by rapidly rotating stars. Our conclusive results confirm previous works, claiming that the Blandford-Znajek mechanism is not directly related to the horizon of the black hole. We also show that the radiated energy depends exponentially on the compactness of the star.

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Milton Ruiz, Carlos Palenzuela, Filippo Galeazzi, Carles Bona. 2012-03-19. The role of the ergosphere in the Blandford-Znajek process. https://doi.org/10.1111/j.1365-2966.2012.20950.x

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