27 Citations
Strong field gravitational lensing by a stringy charged black hole
- Physics
- 2017
In this paper, we study gravitational lensing of magnetically charged black hole of string theory as a strong field approximation for the supermassive black hole at the center of NGC4486B. We…
Equatorial gravitational lensing by accelerating and rotating black hole with NUT parameter
- Physics
- 2015
This paper is devoted to study equatorial gravitational lensing in accelerating and rotating black hole with a NUT parameter in the strong field limit. For this purpose, we first calculate null…
Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole
- Physics
- 2015
We study two interesting features of a black hole with an ordinary as well as phantom global monopole. Firstly, we investigate null geodesics which imply unstable orbital motion of particles for both…
Gravitational energy of a magnetized Schwarzschild black hole: a teleparallel approach
- Physics
- 2012
We investigate the distribution of gravitational energy in the spacetime of a Schwarzschild black hole immersed in a cosmic magnetic field. This is done in the context of the teleparallel equivalent…
Null Geodesics and Strong Field Gravitational Lensing in a String Cloud Background
- Physics
- 2015
This paper is devoted to studying two interesting issues of a black
hole with string cloud background. Firstly, we investigate null
geodesics and find unstable orbital motion of particles.…
Gravitational lensing by black holes
- Physics
- 2009
We review the theoretical aspects of gravitational lensing by black holes, and discuss the perspectives for realistic observations. We will first treat lensing by spherically symmetric black holes,…
Relativistic images of Schwarzschild black hole lensing
- Physics
- 2009
We model massive dark objects at centers of many galaxies as Schwarzschild black hole lenses and study gravitational lensing by them in detail. We show that the ratio of mass of a Schwarzschild lens…
Electromagnetic fields of slowly rotating compact magnetized stars in braneworld
- Physics
- 2011
We study the structure of electromagnetic field of slowly rotating magnetized star in a Randall-Sundrum II type braneworld. The star is modeled as a sphere consisting of perfect highly magnetized…
References
SHOWING 1-10 OF 22 REFERENCES
GRAVITATIONAL LENSING IN THE WEAK FIELD LIMIT BY A BRANEWORLD BLACK HOLE
- Physics
- 2005
The existence of braneworld black holes may be of primordial origin, or may even be produced in high energy particle collisions in the laboratory and in cosmic ray showers as well. These black holes…
Reissner-Nordstrom black hole lensing
- Physics
- 2002
In this paper we study the strong gravitational lensing scenario where the lens is a Reissner-Nordstr\"om black hole. We obtain the basic equations and show that, as in the case of a Schwarzschild…
Gravitational lensing by a charged black hole of string theory
- Physics
- 2003
We study gravitational lensing by the Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) charged black hole of heterotic string theory and obtain the angular position and magnification of the…
Weak field limit of Reissner-Nordstrom black hole lensing
- Physics
- 2004
We study gravitational lensing by a Reissner-Nordstrom (RN) black hole in the weak field limit. We obtain the basic equations for the deflection angle and time delay and find analytical expressions…
Analytic Kerr black hole lensing for equatorial observers in the strong deflection limit
- Physics
- 2005
In this paper we present an analytical treatment of gravitational lensing by Kerr black holes in the limit of very large deflection angles, restricting to observers in the equatorial plane. We…
Particle motion and gravitational lensing in the metric of a dilaton black hole in a de Sitter universe
- Physics
- 2007
We consider the metric exterior to a charged dilaton black hole in a de Sitter universe. We study the motion of a test particle in this metric. Conserved quantities are identified and the…
On black holes in magnetic universes
- Physics
- 1981
The magnetized black hole solutions discovered by Ernst are studied. It is shown that no static magnetic‐universe Kerr–Newman black holes exist if either a, the Kerr angular momentum parameter, or e,…
Black holes in a magnetic universe
- Physics
- 1976
We present a general procedure for transforming asymptotically flat axially symmetric solutions of the Einstein–Maxwell equations into solutions resembling Melvin’s magnetic universe. Specific…
Higher dimensional black holes in external magnetic fields
- Physics
- 2005
We apply a Harrison transformation to higher dimensional asymptotically flat black hole solutions, which puts them into an external magnetic field. First, we magnetize the Schwarzschild-Tangherlini…
Magnetized Black Holes
- Physics
- 1989
Physical aspects of the theory of black holes in an external electromagnetic field are reviewed. The "magnetized" black hole model is currently widely discussed in astrophysics because it provides a…