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pro vyhledávání: '"Nedkova, Petya G."'
Autor:
Gyulchev, Galin N., Roy, Ayush, Collodel, Lucas G., Nedkova, Petya G., Yazadjiev, Stoytcho S., Doneva, Daniela D.
We study the shadows cast by rotating hairy black holes with two non-trivial time-periodic scalar fields having a non-flat Gaussian curvature of the target space spanned by the scalar fields. Such black holes are a viable alternative to the Kerr blac
Externí odkaz:
http://arxiv.org/abs/2402.08469
Autor:
Doneva, Daniela D., Kiorpelidi, Stella, Nedkova, Petya G., Papantonopoulos, Eleftherios, Yazadjiev, Stoytcho S.
Publikováno v:
Phys. Rev. D 98, 104056 (2018)
Recently new scalarized black hole solutions were constructed in the extended scalar-tensor-Gauss-Bonnet gravity, where the scalar field is sourced by the curvature of the spacetime via the Gauss-Bonnet invariant. A natural extension of these results
Externí odkaz:
http://arxiv.org/abs/1809.00844
Akademický článek
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We explore the shadow of certain class of rotating traversable wormholes within classical general relativity. The images depend on the angular momentum of the wormhole, and the inclination angle of the observer. We compare the results with the case o
Externí odkaz:
http://arxiv.org/abs/1307.7647
We construct exact solutions of the Einstein-Maxwell-Dilaton field equations in five dimensions, which describe general configurations of charged and static black holes sitting on a Kaluza-Klein bubble. More specifically we discuss the configurations
Externí odkaz:
http://arxiv.org/abs/1304.7020
We construct a new exact solution in the 5D Einstein-Maxwell-dilaton gravity describing a magnetized squashed black hole. We calculate its physical characteristics, and derive the Smarr-like relations. The Hawking radiation of the solution is also in
Externí odkaz:
http://arxiv.org/abs/1211.5249
We present an exact solution to the 5D Einstein-Maxwell-dilaton equations describing a static black hole on Taub-Nut instanton. By construction the solution does not possess a charge, but is magnetized along the compact dimension. As a limit we obtai
Externí odkaz:
http://arxiv.org/abs/1112.3326
Publikováno v:
Phys.Rev.D82:044010,2010
We construct a new exact solution to the 5D Einstein equations describing rotating black ring with a single angular momentum surrounded by two Kaluza-Klein bubbles. The solution is generated by 2-soliton B\"{a}cklund transformation. Its physical prop
Externí odkaz:
http://arxiv.org/abs/1005.5051
Autor:
NEDKOVA, PETYA G.1 pnedkova@phys.uni-sofia.bg, YAZADJIEV, STOYTCHO S.1 yazad@phys.uni-sofia.bg
Publikováno v:
Thirteenth Marcel Grossmann Meeting, The: on Recent Developments in Theoretical & Experimental General Relativity, Astrophysics & Relativistic Field Theories - Proceedings of the Mg13 Meeting on General Relativity (In 3 Volumes). 2015, p1330-1332. 3p.
Autor:
YAZADJIEV, STOYTCHO S.1 yazad@phys.uni-sofia.bg, NEDKOVA, PETYA G.1 pnedkova@phys.uni-sofia.bg
Publikováno v:
Twelfth Marcel Grossmann Meeting, The: on Recent Developments in Theoretical & Experimental General Relativity, Astrophysics & Relativistic Field Theories (In 3 Volumes) - Proceedings of the Mg12 Meeting on General Relativity. 2012, p1084-1086. 3p.