Journal
ASTROPHYSICAL JOURNAL
Volume 643, Issue 2, Pages L87-L90Publisher
IOP PUBLISHING LTD
DOI: 10.1086/505140
Keywords
accretion, accretion disks; black hole physics; gamma rays : bursts; neutrinos
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We first refine the fixed concept in the literature that the usage of the Newtonian potential in studies of black hole accretion is invalid and the general relativistic effect must be considered. As our main results, we then show that the energy released by neutrino annihilation in neutrino-dominated accretion flows is sufficient for gamma-ray bursts when the contribution from the optically thick region of the flow is included, and that in the optically thick region advection does not necessarily dominate over neutrino cooling because the advection factor is relevant to the geometrical depth rather than the optical depth of the flow.
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