CONICET | Buscador de Institutos y Recursos Humanos

Gravastar models have recently been proposed as an alternative to black holes, mainly to avoidthe problematic issues associated with event horizons and singularities. Recently in [1], a regularvariety of gravastar models within the context of Einstein-Born-Infeld (EBI) nonlinear electrodynamics were builded. These original models are truly regular in the sense that both the metricand its derivatives are continuous throughout space-time, contrary to other cases in the literaturewhere matching conditions are necessary in the interior and exterior regions of the event horizon.In this work, in the same theoretical context from[1], we study some optical phenomena, such asthe weak gravitational lens for the case of the mangnetized plasma and the ináuence of working with a non-linear Öeld of BI in observables such as the Einstein ring or the total delay time.These important issues allow us to compare the results obtained in the context of these new staticBorn-Infeld gravastars with the standard linear ones (e.g. Reissner-Nordstr?m).