Blandford-Znajek Effect and Neutrino Pair Annihilation as the Central Engines of Gamma Ray Bursts and Blazars

Abstract

The central engine of gamma-ray burst is considered. Blandford-Znajek (BZ) process is reconsidered under the asymtotic magnetic condition $\mathbf{B}=B_0\hat{z}$ (rotation axis) at $r\gg r_H$. Another scenario of $\nu \overline{\nu }\to e^{+}{e}^{-}$ driven jet are combined to BZ process to compliment it.

9pages, 1 figure