IFEG   20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Geometrical models for spheroidal cosmological voids
Autor/es:
OSVALDO M. MORESCHI; EZEQUIEL BOERO
Lugar:
Córdoba
Reunión:
Congreso; CosmoSur III; 2015
Institución organizadora:
FaMAF - OAC
Resumen:
We propose a complete geometrical model for voids in Robertson-Walker cosmologies.The model provides with the metric with spheroidal symmetry which outside the voidregion is an exact homogeneous and isotropic Robertson-Walker spacetime. In theinterior of the void one can adjust for the mass distribution and peculiar spacelikecomponents of the energy momentum tensor that we have discussed elsewhere. Themodels are designed for the calculations of gravitational lens effects.