your ID: 0281 
First Name: Wei-Min 
Last Name: Gu 
Affiliation: Xiamen University 

Title: Neutrino-Dominated Accretion Models for Gamma-Ray Bursts 
Authors: Wei-Min Gu, Tong Liu, and Ju-Fu Lu 
Topic: 2 
Session: oral 

Abstract: 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.