Effects of non-linear electrodynamics on radiation propagation around charged compact object
Charged black holes; Non-linear electrodynamics
: In this thesis, the propagation of non-linear electromagnetic waves is careful analyzed on a curved spacetime created by spherically symmetric mass and charge distribution. Using certain approximations we verified the existence of electromagnetic self-interaction between the background electrostatic field and the radiation that propagating in it, and we adopted for this analysis an approach known as effective metric. We observe that the effective metric does not generate effective events horizons, but the non linearities changes the event horizons usual positions of Reissner-Nordström black holes. In linear approximation, we compute how the self-interaction affects the geodesic deviation and the redshift of photons propagating near this massive charged object. Using the Euler-Heisenberg effective Lagrangian, we estimate the contribution of these self-interactions in the geometrical reshift near extremal compact objects.