Oblique magnetic fields and the role of frame dragging near rotating black hole
arXiv:1408.2452 · doi:10.14311/AP.2014.54.0398
Abstract
Magnetic null points can develop near the ergosphere boundary of a rotating black hole by the combined effects of strong gravitational field and the frame-dragging mechanism. The induced electric component does not vanish an efficient process of particle acceleration can occur. Furthermore, the effect of imposed (weak) magnetic field can trigger an onset of chaos. The model set-up appears to be relevant for low-accretion-rate nuclei of some galaxies which exhibit episodic accretion events (such as the Milky Way's supermassive black hole) embedded in a large-scale magnetic field of external origin. We review our recent results and we give additional context for future work with the focus on the role of gravito-magnetic effects caused by rotation of the black hole. While the test motion is strictly regular in the classical black hole space-time, with and without effects of rotation or electric charge, gravitational perturbations and imposed external electromagnetic fields may lead to chaos.
write-up of a talk at 11th INTEGRAL/BART Workshop in Karlovy Vary (Czech Republic, 22-25 April 2014); 13 pages, 11 figures (resolution downgraded to reduce the file size; for full resolution see the journal paper)
References in corpus (15)
- Recurrence Plots for the Analysis of Complex Systems
- Magnetized Tori around Kerr Black Holes: Analytic Solutions with a Toroidal Magnetic Field
- Transition from Regular to Chaotic Circulation in Magnetized Coronae near Compact Objects
- Off-equatorial orbits in strong gravitational fields near compact objects -- II: halo motion around magnetic compact stars and magnetized black holes
- Electrically charged matter in rigid rotation around magnetized black hole
- Off-equatorial orbits in strong gravitational fields near compact objects
- Free motion around black holes with discs or rings: between integrability and chaos - II
- Free motion around black holes with discs or rings: between integrability and chaos - I
- Chaos from the ring string in Gauss-Bonnet black hole in space
- The Black Hole Meissner Effect and Blandford-Znajek Jets
- Chaos in Geodesic Motion around a Black Ring
- Magnetic layers and neutral points near rotating black hole
- Accreting Black Holes
- Black holes and magnetic fields
- Black hole Meissner effect and entanglement
Cited by in corpus (5)
- Near-horizon structure of escape zones of electrically charged particles around weakly magnetized rotating black hole
- Dragged surfaces. On the accretion tori in the ergoregion
- Oblique magnetic fields and the role of frame dragging
- Emergence of magnetic null points in electro-vacuum magnetospheres of compact objects: The case of a plunging neutron star
- On the accreting tori sequences in Ringed Accretion Disks models. Polytropic equations of state and toroidal magnetic fields