Static charged fluid around a massive magnetic dipole

Dipole - Dipole Interactions of Charged - Magnetic Grains

Exact Relativistic Static Charged Perfect Fluid Disks

Using the well-known “displace, cut and reflect” method used to generate disks from given solutions of Einstein field equations, we construct static charged disks made of perfect fluid based on the Reissner-Nordström solution in isotropic coordinates. We also derive a simple stability condition for charged and non charged perfect fluid disks. As expected, we find that the presence of charge inc...

Tolman-Bayin type static charged fluid spheres in general relativity

In a static spherically symmetric Einstein-Maxwell spacetime the class of astrophysical solution found out by Ray and Das (2002) and Pant and Sah (1979) are revisited here in connection to the phenomenological relationship between the gravitational and electromagnetic fields. It is qualitatively shown that the charged relativistic stars of Tolman (1939) and Bayin (1978) type are of purely elect...

Static charged perfect fluid with Weyl-Majumdar relation

In Newtonian theory, there are static equilibrium configurations of charged particles in which the gravitational attractions and the electric repulsions among the particles exactly balance. In general relativity, it is well known that the Einstein equation has such a static solution corresponding to these Newtonian situations, namely there is the Majumdar-Papapetrou solution [2,3] describing an...

Magnetic-dipole transitions in highly charged ions as a basis of ultraprecise optical clocks.

We evaluate the feasibility of using magnetic-dipole (M1) transitions in highly charged ions as a basis of an optical atomic clockwork of exceptional accuracy. We consider a range of possibilities, including M1 transitions between clock levels of the same fine-structure and hyperfine-structure manifolds. In highly charged ions these transitions lie in the optical part of the spectra and can be ...