Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Demetrios B."'
Publikováno v:
Astronomy, Vol 2, Iss 2, Pp 105-127 (2023)
The general-relativistic (GR) magnetohydrodynamic (MHD) equations for a conductive plasma fluid are derived and discussed in the curved spacetime described by Thorne’s metric tensor, i.e., a family of cosmological models with inherent anisotropy du
Externí odkaz:
https://doaj.org/article/cd24c07d7ce3426f982325159ace94f2
We investigate the generation of gravitational waves from the rotation of an orthogonal pulsar magnetosphere in flat space time. We calculate the first order metric perturbation due to the rotation of the non-axisymmetric distribution of electromagne
Externí odkaz:
http://arxiv.org/abs/2312.11586
Publikováno v:
Astronomy 2, 105-127 (2023)
The general-relativistic (GR) magnetohydrodynamic (MHD) equations for a conductive plasma fluid are derived and discussed in the curved spacetime described by Thorne's metric tensor, i.e., a family of cosmological models with inherent anisotropy due
Externí odkaz:
http://arxiv.org/abs/2306.08298
We obtain an approximate solution for the motion of a charged particle around a Schwarzschild black hole immersed in a weak dipolar magnetic field. We focus on eccentric bound orbits in the equatorial plane of the Schwarzschild black hole and derive
Externí odkaz:
http://arxiv.org/abs/1503.04621
Publikováno v:
Phys. Rev. D. 87, 064019 (2013)
We consider the linearized semiclassical Einstein equations for small deviations around de Sitter spacetime including the vacuum polarization effects of conformal fields. Employing the method of order reduction, we find the exact solutions for genera
Externí odkaz:
http://arxiv.org/abs/1301.5261
We revisit the Blandford & Znajek (1977) process and solve the fundamental equation that governs the structure of the steady-state force-free magnetosphere around a Kerr black hole. The solution depends on the distributions of the magnetic field angu
Externí odkaz:
http://arxiv.org/abs/1212.0320
The Poynting-Robertson Cosmic Battery proposes that the innermost part of the accretion disk around a black hole is threaded by a large scale dipolar magnetic field generated in situ, and that the return part of the field diffuses outward through the
Externí odkaz:
http://arxiv.org/abs/1205.6597
In a previous paper [1] we considered the possibility that (within the early-radiation epoch) there has been (also) a short period of a significant presence of cosmic strings. During this radiation-plus-strings stage the Universe matter-energy conten
Externí odkaz:
http://arxiv.org/abs/1112.2077
Publikováno v:
Int.J.Mod.Phys.A23:4467-4484,2008
Gravitational instabilities in a magnetized Friedman - Robertson - Walker (FRW) Universe, in which the magnetic field was assumed to be too weak to destroy the isotropy of the model, are known and have been studied in the past. Accordingly, it became
Externí odkaz:
http://arxiv.org/abs/0806.4362
Autor:
Papadopoulos, Demetrios B.
Publikováno v:
Astron.Astrophys.396:1045,2002
The equations which determine the response of a charged particle moving in a magnetic field to an incident gravitational wave(GW) are derived in the linearized approximation to general relativity. We briefly discuss several astrophysical applications
Externí odkaz:
http://arxiv.org/abs/gr-qc/0209033