info:eu-repo/semantics/article
Weak lensing in a plasma medium and gravitational deflection of massive particles using the Gauss-Bonnet theorem: A unified treatment
Fecha
2018-06-08Registro en:
Crisnejo, Gabriel Sebastian; Gallo, Emanuel; Weak lensing in a plasma medium and gravitational deflection of massive particles using the Gauss-Bonnet theorem: A unified treatment; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 97; 12; 8-6-2018; 1-18
1550-7998
2470-0029
CONICET Digital
CONICET
Autor
Crisnejo, Gabriel Sebastian
Gallo, Emanuel
Resumen
We apply the Gauss-Bonnet theorem to the study of light rays in a plasma medium in a static and spherically symmetric gravitational field and also to the study of timelike geodesics followed for test massive particles in a spacetime with the same symmetries. The possibility of using the theorem follows from a correspondence between timelike curves followed by light rays in a plasma medium and spatial geodesics in an associated Riemannian optical metric. A similar correspondence follows for massive particles. For some examples and applications, we compute the deflection angle in weak gravitational fields for different plasma density profiles and gravitational fields.