711 citations · 3.1k across the 32 of their papers we have counts for
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Caustics of binary gravitational lenses: from galactic haloes to exotic matter
V. Bozza, C. Melchiorre
We investigate the caustic topologies for binary gravitational lenses made up of two objects whose gravitational potential declines as . With this corresponds to power…
Alternatives to Schwarzschild in the weak field limit of General Relativity
V. Bozza, A. Postiglione
The metric outside an isolated object made up of ordinary matter is bound to be the classical Schwarzschild vacuum solution of General Relativity. Nevertheless, some solutions are…
Gravitational Lensing by Black Holes
V. Bozza
We review the theoretical aspects of gravitational lensing by black holes, and discuss the perspectives for realistic observations. We will first treat lensing by spherically symme…
Extreme gravitational lensing by supermassive black holes
V. Bozza
Extreme gravitational lensing refers to the bending of photon trajectories that pass very close to supermassive black holes and that cannot be described in the conventional weak de…
Strong deflection limit of black hole gravitational lensing with arbitrary source distances
V. Bozza, G. Scarpetta
The gravitational field of supermassive black holes is able to strongly bend light rays emitted by nearby sources. When the deflection angle exceeds , gravitational lensing can…
Kerr black hole lensing for generic observers in the strong deflection limit
V. Bozza, F. De Luca, G. Scarpetta
We generalize our previous work on gravitational lensing by a Kerr black hole in the strong deflection limit, removing the restriction to observers on the equatorial plane. Startin…
The weakly perturbed Schwarzschild lens in the strong deflection limit
V. Bozza, M. Sereno
We investigate the strong deflection limit of gravitational lensing by a Schwarzschild black hole embedded in an external gravitational field. The study of this model, analogous to…
Regular two-component bouncing cosmologies and perturbations therein
V. Bozza, G. Veneziano
We present a full investigation of scalar perturbations in a rather generic model for a regular bouncing universe, where the bounce is triggered by an effective perfect fluid with…
Time Delay in Black Hole Gravitational Lensing as a Distance Estimator
V. Bozza, L. Mancini
We calculate the time delay between different relativistic images formed by black hole gravitational lensing in the strong field limit. For spherically symmetric black holes, it tu…
Gravitational lensing in the strong field limit
V. Bozza
We provide an analytic method to discriminate among different types of black holes on the ground of their strong field gravitational lensing properties. We expand the deflection an…
Strong field limit of black hole gravitational lensing
V. Bozza, S. Capozziello, G. Iovane +1
We give the formulation of the gravitational lensing theory in the strong field limit for a Schwarzschild black hole as a counterpart to the weak field approach. It is possible to…