Effects of Modified Theories of Gravity on Neutrino Pair Annihilation Energy Deposition near Neutron Stars
Gaetano Lambiase, Leonardo Mastrototaro
Abstract
Abstract We study the neutrino pair annihilation into electron–positron pairs ( ) near the surface of a neutron star. The analysis is performed in the framework of extended theories of gravity. The latter induce a modification of the minimum photon sphere radius ( R ph ) and the maximum energy deposition rate near R ph , as compared to those of general relativity. These results might lead to an efficient mechanism for generating GRBs.
Topics & Concepts
PhysicsNeutron starAnnihilationNeutrinoNuclear physicsRADIUSNeutronGeneral relativityElectronBar (unit)Particle physicsAstrophysicsTheoretical physicsComputer securityComputer scienceMeteorologyCosmology and Gravitation TheoriesAstrophysics and Cosmic PhenomenaGamma-ray bursts and supernovae