Generation and evolution of magnetic fields in the gravitomagnetic field of a Kerr Black Hole
| dc.creator | Khanna, Ramon | |
| dc.date | 1999-03-05 | |
| dc.date.accessioned | 2026-07-07T02:30:42Z | |
| dc.date.available | 2026-07-07T02:30:42Z | |
| dc.description | I study the generation and evolution of magnetic fields in the plasma surrounding a rotating black hole. Attention is focused on effects of the gravitomagnetic potential. The gravitomagnetic force appears as battery term in the generalized Ohm's law. The generated magnetic field should be stronger than fields generated by the classical Biermann battery. The coupling of the gravitomagnetic potential with electric fields appears as gravitomagnetic current in Maxwell's equations. In the magnetohydrodynamic induction equation, this current re-appears as source term for the poloidal magnetic field, which can produce closed magnetic structures around an accreting black hole. In principle, even self-excited axisymmetric dynamo action is possible, which means that Cowling's anti dynamo theorem does not hold in the Kerr metric. Finally, the structure of a black hole driven current is studied. | |
| dc.description | 8 pages, 2 figures, latex uses sprocl.sty, to appear in the Proceedings of The Third William Fairbank Meeting on "The Lense-Thirring Effect", June 1998, R. Ruffini et al. (Eds.), World Scientific, reviews astro-ph/9803088 and astro-ph/9803240 and contains new results, see also http://www.lsw.uni-heidelberg.de/~rkhanna/ | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9903091 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9903091 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/13902 | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Generation and evolution of magnetic fields in the gravitomagnetic field of a Kerr Black Hole | |
| dc.type | text |