6533b830fe1ef96bd1297cb5
RESEARCH PRODUCT
Neutrino pair annihilation ( $$\nu {\bar{\nu }}\rightarrow e^-e^+$$ ν ν ¯ → e - e + ) in the presence of quintessence surrounding a black hole
L. MastrototaroL. MastrototaroGaetano LambiaseGaetano Lambiasesubject
High Energy Physics - TheoryPhysicsParticle physicsAnnihilationPhysics and Astronomy (miscellaneous)General relativityAstrophysics::High Energy Astrophysical PhenomenaRadiusQC770-798AstrophysicsGeneral Relativity and Quantum CosmologyBlack holeQB460-466Neutron starGeneral Relativity and Quantum CosmologyNuclear and particle physics. Atomic energy. RadioactivityNeutrinoAstrophysics - High Energy Astrophysical PhenomenaEngineering (miscellaneous)Schwarzschild radiusQuintessencedescription
Quintessence fields, introduced to explain the speed-up of the Universe, might affect the geometry of spacetime surrounding black holes, as compared to the standard Schwarzschild and Kerr geometries. In this framework, we study the neutrino pairs annihilation into electron-positron pairs ($\nu{\bar \nu}\to e^-e^+$) near the surface of a neutron star, focusing, in particular, on the Schwarzschild-like geometry in presence of quintessence fields. The effect of the latter is to increase the minimum photon-sphere radius ($R_{ph}$), increasing in such a way the maximum energy deposition rate near to $R_{ph}$. The rate turns out to be several orders of magnitude greater than the rate computed in the framework of General Relativity. These results might provide an efficient mechanism for the generation of GRBs and lead to constraints on the parameters of the quintessence model.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-10-01 | European Physical Journal C: Particles and Fields |