INVESTIGADORES
GALLO Emanuel
congresos y reuniones científicas
Título:
Optical scalar in gravitational lensing at second order
Autor/es:
GABRIEL CRISNEJO; EMANUEL GALLO
Lugar:
La Falda
Reunión:
Conferencia; GRAV17; 2017
Institución organizadora:
conicet- FaMAF
Resumen:
In this work we analyze the theory of gravitational weak lenses on a flat background. We obtain explicit expressions for the optical scalars at the second order in the flat metric perturbation in a general way in the sense that we do not mention neither the extension of the lens nor the shape thereof. We explicitly calculate the optical scalars in the generalized Poisson gauge. Finally, considering axially symmetrical lenses in the approximation of thin lens obtain an expression for the deflection angle at the second order in the flat metric perturbation.
