The role of the ergosphere in the Blandford-Znajek process

Autor:	Ruiz, Milton, Palenzuela, Carlos, Galeazzi, Filippo, Bona, Carles
Rok vydání:	2012
Předmět:	General Relativity and Quantum Cosmology
Zdroj:	Mon. Not. R. Aston. Soc. 423 (2012) 1300-1308
Druh dokumentu:	Working Paper
DOI:	10.1111/j.1365-2966.2012.20950.x
Popis:	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. Comment: 10 pages, 11 figures. Accepted for publication in MNRAS
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1203.4125 Zobrazit plný text záznamu View this record from Arxiv