Zobrazeno 1 - 10
of 179
pro vyhledávání: '"Hansraj, Sudan"'
In the standard approach to studying wormhole geometry, the presence of dark energy is unavoidable to ensure traversability. The dark energy provides the negative gravity effect to keep the throat open. The question we analyse is whether the same can
Externí odkaz:
http://arxiv.org/abs/2402.11348
Autor:
Hansraj, Sudan, Hansraj, Chevarra, Mkhize, Njabulo, Errehymy, Abdelghani, Boehmer, Christian G.
Publikováno v:
Physics of the Dark Universe 44 (2024) 101443
The trace-free Einstein equations contain one equation less than the complete field equations. In a static and spherically symmetric spacetime, the number of field equations is thus reduced to two. The equation of pressure isotropy of general relativ
Externí odkaz:
http://arxiv.org/abs/2402.07620
Quark stars are terrestrial laboratories to study fundamental physics at ultrahigh densities and temperatures. In this work, we investigate the internal structure and the physical properties of quark stars (QSs) in the Rastall gravity. Rastall gravit
Externí odkaz:
http://arxiv.org/abs/2210.01372
Publikováno v:
Ann. Phys. (Berlin) 2022, 534, 2100596
We construct an exact anisotropic star model with a linear barotropic equation of state and with Finch-Skea potential within the framework of pure Lovelock gravity. A comparison with the corresponding Einstein model in a suitable limit is easily dedu
Externí odkaz:
http://arxiv.org/abs/2207.02130
Autor:
Hansraj, Sudan, Errehymy, Abdelghani
Publikováno v:
In Physics of the Dark Universe December 2024 46
Autor:
Errehymy, Abdelghani, Maurya, S.K., Hansraj, Sudan, Mahmoud, Mona, Nisar, Kottakkaran Sooppy, Abdel-Aty, Abdel-Haleem
Publikováno v:
In Chinese Journal of Physics June 2024 89:56-68
Publikováno v:
In Journal of High Energy Astrophysics June 2024 42:1-11
The recent theoretical advance known as the Minimal Geometric Deformation (MGD) method has initiated a renewed interest in investigating higher curvature gravitational effects in relativistic astrophysics. In this work, we model a strange star within
Externí odkaz:
http://arxiv.org/abs/2109.00358
It is known that the standard Schwarzschild interior metric is conformally flat and generates a constant density sphere in any spacetime dimension in Einstein and Einstein--Gauss--Bonnet gravity. This motivates the questions: In EGB does the conforma
Externí odkaz:
http://arxiv.org/abs/2102.06041
Recently it has been proposed that the Gauss-Bonnet coupling parameter of Lovelock gravity may suitably be rescaled in order to admit physically viable models of celestial phenomena such that higher curvature effects are active in standard four dimen
Externí odkaz:
http://arxiv.org/abs/2011.08701