Journal ArticleDOI
Black hole in a uniform magnetic field
Reads0
Chats0
TLDR
In this paper, the authors derived the solution for the electromagnetic field occurring when a stationary, axisymmetric black hole is placed in an originally uniform magnetic field aligned along the symmetry axis of the black hole.Abstract:
Using the fact that a Killing vector in a vacuum spacetime serves as a vector potential for a Maxwell test field, we derive the solution for the electromagnetic field occurring when a stationary, axisymmetric black hole is placed in an originally uniform magnetic field aligned along the symmetry axis of the black hole. It is shown that a black hole in a magnetic field will selectively accrete charges until its charge becomes $Q=2{\mathrm{Bb}}_{0}J$, where ${B}_{0}$ is the strength of the magnetic field and $J$ is the angular momentum of the black hole. As a by-product of the analysis given here, we prove that the gyromagnetic ratio of a slightly charged, stationary, axisymmetric black hole (not assumed to be Kerr) must have the value $g=2$.read more
Citations
More filters
Journal ArticleDOI
Trips in Kerr-NUT spacetime
TL;DR: In this article, the authors question the correctness of the method employed and the physical consistency of the claimed results of Abdujabbarov et al. in Gen Relativ Gravit 40:2515-2532, 2008.
Astrophysical black holes embedded in organized magnetic fields: Case of a nonvanishing electric charge
TL;DR: In this article , a mathematical frame-work to describe magnetized black holes within General Relativity was presented and several examples how these can be employed in the astrophysical con-text.
Journal ArticleDOI
Fluxbranes Delaying Brane-Antibrane Annihilation
TL;DR: In this paper, the authors considered the possibility of stabilizing the brane-antibrane systems by intersecting the RR charged D_p - bar{D}_p pair with the RR F7-brane and showed the behavior of the corresponding supergravity solutions.
Journal ArticleDOI
Particle creation near a rotating black hole immersed in magnetic fields
TL;DR: In this paper, a rotating black hole is immersed in a magnetic field generated by accretion disk, and the transmission coefficient through the barrier separating the positive from the negative energy states increases according to the strength of the external magnetic field.
Journal ArticleDOI
Geodesic dynamics in Chazy-Curzon spacetimes
F. L. Dubeibe,J. E. Alfonso +1 more
TL;DR: In this article, the authors conduct a thorough numerical analysis of the dynamical behavior of geodesics around Chazy-Curzon metrics and find only regular motions for the geodesic in all cases, which suggest the existence of the so-called Carter's constant in this kind of exact solutions.
Related Papers (5)
Rotating Black Holes: Locally Nonrotating Frames, Energy Extraction, and Scalar Synchrotron Radiation
Motion of charged particles near a weakly magnetized Schwarzschild black hole
Valeri P. Frolov,Andrey A. Shoom +1 more