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The Role of the ergosphere in the Blandford-Znajek process
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The Role of the ergosphere in the Blandford-Znajek process
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| Ruiz Meneses, Milton Javier; Palenzuela, Carlos; Galeazzi, Filippo; Bona, Carles | |||
| Aquest document és un/a article, creat/da en: 2012 | |||
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| 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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