36 citations · 217 across the 17 of their papers we have counts for
18 papers
Black objects in a five-dimensional swirling spacetime
Adriano Viganò
We construct a five-dimensional generalization of the swirling universe and embed in it the Myers-Perry black hole and the rotating black ring. We prove that both solutions are fre…
Supersymmetry of the static Reissner-Nordström black hole in Bertotti-Robinson ()
Andrea Di Pinto, Adriano Viganò
We examine supersymmetry of charged and accelerating black holes embedded in a Bertotti-Robinson universe, in the context of , supergravity. After a review of the soluti…
Kerr-Newman black hole in a Melvin-swirling universe
Andrea Di Pinto, Silke Klemm, Adriano Viganò
We present a new exact solution of Einstein-Maxwell field equations which represents a rotating black hole with both electric and magnetic charges immersed in a universe which itse…
Exact rotating wormholes via Ehlers transformations
Adolfo Cisterna, Keanu Müller, Konstantinos Pallikaris +1
In this paper, we construct exact rotating wormholes using Ehlers solution-generating technique. This is based on the Ernst description of four-dimensional, stationary, and axially…
Black holes and solution generating techniques
Adriano Viganò
Multi-black hole solutions play a relevant role both from the theoretical and the phenomenological point of view. In this Thesis, we construct some regular multi-black hole spaceti…
Black holes in a swirling universe
Marco Astorino, Riccardo Martelli, Adriano Viganò
We present a new solution in Einstein's General Relativity representing a Schwarzschild black hole immersed in a rotating universe. Such a solution is constructed analytically by m…
Bubbles of nothing in binary black holes and black rings, and viceversa
Marco Astorino, Roberto Emparan, Adriano Viganò
We argue that expanding bubbles of nothing are a widespread feature of systems of black holes with multiple or non-spherical horizons, appearing as a limit of regions that are narr…
AdS-Taub-NUT spacetimes and exact black bounces with scalar hair
José Barrientos, Adolfo Cisterna, Nicolás Mora +1
We present a new family of exact four-dimensional Taub-NUT spacetimes in Einstein- theory supplemented with a conformally coupled scalar field exhibiting a power-counting super-…
Many accelerating distorted black holes
Marco Astorino, Adriano Viganò
An analytical metric of four-dimensional General Relativity, representing an array of collinear and accelerating black holes, is constructed with the inverse scattering method. The…
Supersymmetric black holes with spiky horizons
Federico Faedo, Silke Klemm, Adriano Viganò
We use the recipe of arXiv:1003.2974 to find half-BPS near-horizon geometries in the t model of , gauged supergravity, and explicitely construct some new examples. A…
Charged and rotating multi-black holes in an external gravitational field
Marco Astorino, Adriano Viganò
We construct analytical and regular solutions in four-dimensional General Relativity which represent multi-black hole systems immersed in external gravitational field configuration…
Binary black hole system at equilibrium
Marco Astorino, Adriano Viganò
An exact and analytical solution of four dimensional vacuum General Relativity representing a system of two static black holes at equilibrium is presented. The metric is completely…
Quantization and soliton-like solutions for the -model in a optic fiber
Francesco Belgiorno, Sergio Luigi Cacciatori, Simone Trevisan +1
In the framework of a mesoscopical model for dielectric media we provide an analytical description for the electromagnetic field confined in a cylindrical cavity containing a finit…
Analogue Hawking Effect: BEC and Surface Waves
F. Belgiorno, S. L. Cacciatori, A. Farahat +1
We take into account two further physical models which play an utmost importance in the framework of Analogue Gravity. We first consider Bose--Einstein condensates (BEC) and then s…
Analogue Hawking Effect: a master equation
F. Belgiorno, S. L. Cacciatori, A. Viganò
We consider further on the problem of the analogue Hawking radiation. We propose a fourth order ordinary differential equation, which allows to discuss the problem of Hawking radia…
On spinorial representations of involutory subalgebras of Kac-Moody algebras
Axel Kleinschmidt, Hermann Nicolai, Adriano Viganò
The representation theory of involutory (or 'maximal compact') subalgebras of infinite-dimensional Kac-Moody algebras is largely terra incognita, especially with regard to fermioni…
Electromagnetic self-force in curved spacetime: New insights from the Janis-Newman algorithm
Matteo Broccoli, Adriano Viganò
We present an original approach to compute the electromagnetic self-force acting on a static charge in Kerr spacetime. Our approach is based on an improved version of the Janis-New…
Spectral boundary conditions and solitonic solutions in a classical Sellmeier dielectric
F. Belgiorno, S. L. Cacciatori, A. Viganò
Electromagnetic field interactions in a dielectric medium represent a longstanding field of investigation, both at the classical level and at the quantum one. We propose a 1+1 dime…