Search

Your search keyword '"Rahaman, Mosiur"' showing total 2 results
Start Over Author "Rahaman, Mosiur" Topic einstein field equations
2 results on '"Rahaman, Mosiur"'

1. Fluid sphere: Stability problem and dimensional constraint.

Author

Rahaman, Farook, Pradhan, Anirudh, Ahmed, Nasr, Ray, Saibal, Saha, Bijan, and Rahaman, Mosiur

Subjects
STABILITY theory, PROBLEM solving, EINSTEIN field equations, GRAVITATIONAL mass, NONCOMMUTATIVE algebras
Abstract

We study different dimensional fluids inspired by noncommutative geometry which admit conformal Killing vector (CKV). The solutions of the Einstein field equations were examined specifically for five different set of spacetime. We calculate the active gravitational mass and impose stability conditions of the fluid sphere. The analysis thus carried out immediately indicates that at four dimension only one can get a stable configuration for any spherically symmetric stellar system and any other dimension, lower or higher, becomes untenable as far as the stability of a system is concerned. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

2. BTZ black holes inspired by noncommutative geometry.

Author

Rahaman, Farook, Kuhfittig, P. K. F., Bhui, B. C., Rahaman, Mosiur, Ray, Saibal, and Mondal, U. F.

Subjects
*BLACK holes, *EINSTEIN field equations, *SPACETIME, *PARTICLES (Nuclear physics), *THERMODYNAMICS, *TEMPERATURE effect
Abstract

In this paper, a Banados-Teitelboim-Zanelli (BTZ) black hole [Phys. Rev. Lett. 69, 1849 (1992)] is constructed from an exact solution of the Einstein field equations in a (2 + 1)--dimensional anti--de Sitter spacetime in the context of noncommutative geometry. The BTZ black hole turns out to have either two horizons, no horizon, or a single horizon corresponding to a minimal mass. Certain thermodynamical properties are investigated, including Hawking temperature, entropy, and heat capacity. Also discussed is the geodesic structure of BTZ black holes for both massless and massive particles. In particular, it is shown that bound orbits for test particles are possible. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results