Asymptotically uniform magnetic field near a Kerr black hole

1989 ◽  
Vol 40 (6) ◽  
pp. 2121-2123 ◽  
Author(s):  
Vladimír Karas
Keyword(s):  
Magnetic Field ◽  
Black Hole ◽  
Uniform Magnetic Field ◽  
Kerr Black Hole

A charged black hole in a uniform magnetic field

1983 ◽  
Vol 61 (8) ◽  
pp. 1192-1197 ◽  
Author(s):  
K. D. Krori ◽  
Sumita Chaudhury ◽  
S. Dowerah
Keyword(s):  
Magnetic Field ◽  
Black Hole ◽  
Event Horizon ◽  
Gaussian Curvature ◽  
Uniform Magnetic Field ◽  
Kerr Black Hole ◽  
Charged Black Hole ◽  
Bonnet Theorem

We present here an investigation of the event horizon of a charged black hole embedded in a uniform magnetic field by studying the Gaussian curvature. It is shown that the Gauss–Bonnet theorem holds for this magnetized black hole and also for a magnetized Kerr black hole.

scholarly journals Magnetized Particle Motion in γ-Spacetime in a Magnetic Field

Galaxies ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 76
Author(s):  
Ahmadjon Abdujabbarov ◽  
Javlon Rayimbaev ◽  
Farruh Atamurotov ◽  
Bobomurat Ahmedov
Keyword(s):  
Magnetic Field ◽  
Black Hole ◽  
Center Of Mass ◽  
Kerr Black Hole ◽  
Compact Object ◽  
Magnetic Interaction ◽  
Mass Energy ◽  
Circular Orbits ◽  
Center Of Mass Energy ◽  
Astrophysical Scenario

In the present work we explored the dynamics of magnetized particles around the compact object in γ-spacetime in the presence of an external asymptotically-uniform magnetic field. The analysis of the circular orbits of magnetized particles around the compact object in the spacetime of a γ-object immersed in the external magnetic field has shown that the area of stable circular orbits of magnetized particles increases with the increase of γ-parameter. We have also investigated the acceleration of the magnetized particles near the γ-object and shown that the center-of-mass energy of colliding magnetized particles increases with the increase of γ-parameter. Finally, we have applied the obtained results to the astrophysical scenario and shown that the values of γ-parameter in the range of γ∈(0.5,1) can mimic the spin of Kerr black hole up to a≃0.85, while the magnetic interaction can mimic the γ-parameter at γ∈(0.8,1) and spin of a Kerr black hole up to a≃0.3.

scholarly journals ENERGY ASSOCIATED WITH SCHWARZSCHILD BLACK HOLE IN A MAGNETIC UNIVERSE

2000 ◽  
Vol 15 (19) ◽  
pp. 2979-2986 ◽  
Author(s):  
S. S. XULU
Keyword(s):  
Magnetic Field ◽  
Black Hole ◽  
Uniform Magnetic Field ◽  
Relativistic Effect ◽  
Rest Mass ◽  
Mass Energy ◽  
Schwarzschild Black Hole ◽  
General Relativistic ◽  
The Magnetic Field ◽  
General Relativistic Effect

In this paper we obtain the energy distribution associated with the Ernst space–time (geometry describing Schwarzschild black hole in Melvin's magnetic universe) in Einstein's prescription. The first term is the rest-mass energy of the Schwarzschild black hole, the second term is the classical value for the energy of the uniform magnetic field and the remaining terms in the expression are due to the general relativistic effect. The presence of the magnetic field is found to increase the energy of the system.

scholarly journals MAGNETIZED PARTICLE MOTION AROUND BLACK HOLE IN BRANEWORLD

2011 ◽  
Vol 26 (06) ◽  
pp. 399-408 ◽  
Author(s):  
O. G. RAHIMOV
Keyword(s):  
Magnetic Field ◽  
Black Hole ◽  
Effective Potential ◽  
Particle Motion ◽  
Uniform Magnetic Field ◽  
Radial Motion ◽  
Circular Orbits ◽  
Spinning Particle ◽  
Jacobi Formalism

We investigate the motion of a magnetized particle orbiting around a black hole in braneworld immersed in asymptotically uniform magnetic field. The influence of brane parameter on effective potential of the radial motion of magnetized spinning particle around the braneworld black hole using Hamilton–Jacobi formalism is studied. It is found that circular orbits for photons and slowly moving particles may become stable near r = 3M. It was argued that the radii of the innermost stable circular orbits are sensitive on the change of brane parameter. Similar discussion without Weil parameter has been considered by de Felice et al. in Refs. 1 and 2.

Accretion onto a Kerr black hole in the presence of a dipole magnetic field

Pramana ◽  
1985 ◽  
Vol 25 (2) ◽  
pp. 135-148 ◽  
Author(s):  
B R Iyer ◽  
C V Vishveshwara ◽  
P J Wiita ◽  
J J Goldstein
Keyword(s):  
Magnetic Field ◽  
Black Hole ◽  
Kerr Black Hole ◽  
Dipole Magnetic Field
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