Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Uniyal, Rashmi"'
Publikováno v:
International Journal of Modern Physics A (2020) 2050155
We present a detailed analysis of a rotating black hole surrounded by "quintessence". This solution represents a fluid with a constant equation of state, $w$, which can for example describe an effective warm dark matter fluid around a black hole. We
Externí odkaz:
http://arxiv.org/abs/1911.00372
Publikováno v:
Phys.Lett. B782 (2018) 185-192
We study the gravitational lensing by a Kerr-Sen Black Hole arising in heterotic string theory. A closed form expression for the bending angle of light in equatorial plane of Kerr-Sen Black Hole is derived as a function of impact parameter, spin and
Externí odkaz:
http://arxiv.org/abs/1803.04268
We study the motion of massless test particles in a five dimensional (5D) Myers-Perry black hole spacetime with two spin parameters. The behaviour of the effective potential in view of different values of black hole parameters is discussed in the equ
Externí odkaz:
http://arxiv.org/abs/1705.09232
We investigate the geodesic motion of massless test particles in the background of a noncommutative geometry inspired Schwarzschild black hole. The behaviour of effective potential is analysed in the equatorial plane and the possible motions of massl
Externí odkaz:
http://arxiv.org/abs/1703.07921
Publikováno v:
Class.Quant.Grav. 35 (2018) no.2, 025003
We investigate the geodesic motion in the background of Kerr-Sen Black Hole arising in the heterotic string theory. The nature of effective potential is discussed in radial as well as latitudinal direction. A special class of spherical photon orbits
Externí odkaz:
http://arxiv.org/abs/1703.07510
Autor:
Nandan, Hemwati, Uniyal, Rashmi
Publikováno v:
Eur.Phys.J. C77 (2017) no.8, 552
We investigate the evolution of timelike geodesic congruences, in the background of a charged black hole spacetime surrounded with quintessence. The Raychaudhuri equations for three kinematical quantities namely the expansion scalar, shear and rotati
Externí odkaz:
http://arxiv.org/abs/1612.07455
We study the geodesic motion of massless test particles in the background of a magnetic charged black hole spacetime in four dimensions in dilaton-Maxwell gravity. The behaviour of effective potential in view of the different values of black hole par
Externí odkaz:
http://arxiv.org/abs/1509.05131
Publikováno v:
Phys. Rev. D 92, 084023 (2015)
We study the geodesic motion of massive and massless test particles in the background of a particular class of multiple charge black holes in gauged supergravity theories in D = 4. We have analysed the horizon structure along with the nature of the e
Externí odkaz:
http://arxiv.org/abs/1509.05110
Publikováno v:
Astrophys. Space Sci. 357 (2015) 1, 92
We study the evolution of timelike geodesics for two dimensional black hole spacetimes arising in string theory and general theory of relativity by solving the Raychaudhuri equation for expansion scalar as an initial value problem. The possibility of
Externí odkaz:
http://arxiv.org/abs/1505.00103
We study the time-like geodesic congruences, in the space-time geometry of a Schwarzschild black hole surrounded by quintessence. The nature of effective potential along with the structure of the possible orbits for test particles in view of the diff
Externí odkaz:
http://arxiv.org/abs/1406.3931