6533b83afe1ef96bd12a7a6b

RESEARCH PRODUCT

The role of the ergosphere in the Blandford-Znajek process

Milton Javier Ruiz MenesesCarlos PalenzuelaFilippo GaleazziCarles Bona

subject

General Relativity and Quantum CosmologyAstrophysics::High Energy Astrophysical PhenomenaAstronomiaFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)General Relativity and Quantum Cosmology

description

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.

yearjournalcountryeditionlanguage
2012-03-19
10.1111/j.1365-2966.2012.20950.xhttp://arxiv.org/abs/1203.4125