Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Astorino, Marco"'
We investigate a complete family of spacetimes which represent black holes with rotation, NUT twist, acceleration, electric and magnetic charges. These are exact solutions of the Einstein-Maxwell equations with any cosmological constant, such that th
Externí odkaz:
http://arxiv.org/abs/2409.02308
Autor:
Astorino, Marco
The Plebanski-Demianski metric is commonly thought to describe the most general Type D black hole in general relativity (possibly coupled with Maxwell electromagnetism), but it fails to describe the elusive accelerating spacetimes with gravitomagneti
Externí odkaz:
http://arxiv.org/abs/2404.06551
Autor:
Astorino, Marco
Publikováno v:
Phys.Rev.D 109 (2024) 8, 084038
The Einstein equivalence principle in general relativity allows us to interpret accelerating black holes as a black hole immersed into the gravitational field of a larger companion black hole. Indeed it is demonstrated that C-metrics can be obtained
Externí odkaz:
http://arxiv.org/abs/2312.00865
Autor:
Astorino, Marco
Publikováno v:
Phys. Rev. D 108, 124025 (2023)
A new, exact and analytical class of accelerating and charged black holes is built, in the Einstein-Maxwell theory, thanks to the Harrison transformation. The diagonal metric does not belong to the Petrov type D classification, therefore it is not pa
Externí odkaz:
http://arxiv.org/abs/2307.10534
Autor:
Astorino, Marco, Boldi, Giovanni
Publikováno v:
JHEP 08 (2023) 085
We present a general procedure, based on the Ehlers transformation of the Ernst equations, to add the gravitomagnetic mass to the whole Plebanski-Demianski family of solutions. We can efficiently generate a large class of accelerating black holes, su
Externí odkaz:
http://arxiv.org/abs/2305.03744
Autor:
Astorino, Marco
Publikováno v:
JHEP 10 (2022) 074
We show how to remove from the rotating C-metric spacetime, which describes accelerating Kerr black holes, both conical singularities. This can be done by embedding the metric into a swirling gravitational universe, through a proper Ehlers transforma
Externí odkaz:
http://arxiv.org/abs/2207.14305
Publikováno v:
Phys. Rev. D 106, 064014 (2022)
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 means of the last unexplored Lie point symmetry of the Ernst equations
Externí odkaz:
http://arxiv.org/abs/2205.13548
Publikováno v:
JHEP07(2022)007
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 narrowly enclosed by the horizons. The bubble is a minimal cycle that link
Externí odkaz:
http://arxiv.org/abs/2204.09690
Autor:
Astorino, Marco, Viganò, Adriano
Publikováno v:
Eur.Phys.J.C 81 (2021) 10, 891
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 solution can be completely regularised from any conical singularity,
Externí odkaz:
http://arxiv.org/abs/2106.02058
Autor:
Astorino, Marco, Viganò, Adriano
Publikováno v:
Eur.Phys.J.C 82 (2022) 9, 829
We construct analytical and regular solutions in four-dimensional General Relativity which represent multi-black hole systems immersed in external gravitational field configurations. The external field background is composed by an infinite multipolar
Externí odkaz:
http://arxiv.org/abs/2105.02894