Zobrazeno 1 - 10
of 1 520
pro vyhledávání: '"Gullstrand, P."'
We report a family of self-similar exact solutions in General Relativity. The solutions are found in a Painleve-Gullstrand coordinate system but can also be transformed smoothly into a diagonal form. The solutions represent a gravitational collapse l
Externí odkaz:
http://arxiv.org/abs/2404.18431
Publikováno v:
Phys. Rev. D 108, 044009 (2023)
A metric that describes a collapsing star and the surrounding black hole geometry accounting for quantum gravity effects has been derived independently by different research groups. There is consensus regarding this metric up until the star reaches i
Externí odkaz:
http://arxiv.org/abs/2307.07797
Autor:
Visser, Matt, Liberati, Stefano
We discuss the tension between the possible existence of Painleve-Gullstrand coordinate systems versus the explicit geometrical features of the Kerr spacetime; a subject of interest to Professor Thanu Padmanabhan in the weeks immediately preceding hi
Externí odkaz:
http://arxiv.org/abs/2210.11057
Autor:
Soumya Chakrabarti, Chiranjeeb Singha
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 6, Pp 1-10 (2024)
Abstract We report a family of self-similar exact solutions in General Relativity. The solutions are found in a Painleve-Gullstrand coordinate system but can also be transformed smoothly into a diagonal form. The solutions represent a gravitational c
Externí odkaz:
https://doaj.org/article/9cce1304e6774ffc89e8adf7d545f243
Autor:
Volovik, G. E.
The Painleve-Gullstrand coordinates are extended to describe the black hole in the cosmological environment: the Schwarzschild-de-Sitter black hole, which has two horizons. The extension is made using the Arnowitt-Deser-Misner formalism. In this exte
Externí odkaz:
http://arxiv.org/abs/2209.02698
Autor:
Gaur, Rudeep, Visser, Matt
Cosmology is most typically analyzed using standard co-moving coordinates, in which the galaxies are (on average, up to presumably small peculiar velocities) "at rest", while "space" is expanding. But this is merely a specific coordinate choice; and
Externí odkaz:
http://arxiv.org/abs/2207.08375
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Herein we explore the non-equatorial constant-$r$ ("quasi-circular") geodesics (both timelike and null) in the Painleve-Gullstrand variant of the Lense-Thirring spacetime recently introduced by the current authors. Even though the spacetime is not sp
Externí odkaz:
http://arxiv.org/abs/2202.09010
Recently, the current authors have formulated and extensively explored a rather novel Painleve-Gullstrand variant of the slow-rotation Lense-Thirring spacetime, a variant which has particularly elegant features -- including unit lapse, intrinsically
Externí odkaz:
http://arxiv.org/abs/2112.05228
Publikováno v:
Universe 7 (2021) 473
Recently, the authors have formulated and explored a novel Painleve-Gullstrand variant of the Lense-Thirring spacetime, which has some particularly elegant features -- including unit-lapse, intrinsically flat spatial 3-slices, and some particularly s
Externí odkaz:
http://arxiv.org/abs/2110.01814