Moving away from the Near-Horizon Attractor of the Extreme Kerr Force-Free Magnetosphere
arXiv:2007.15665 · doi:10.1088/1475-7516/2020/10/048
Abstract
We consider force-free magnetospheres around the extreme Kerr black hole. In this case there is no known exact analytic solution to force free electrodynamics which is stationary, axisymmetric and magnetically-dominated. However, any stationary, axisymmetric and regular force-free magnetosphere in extreme Kerr black hole approaches the same attractor solution in the near-horizon extreme Kerr (NHEK) limit with null electromagnetic field. We show that by moving away from the attractor solution in the NHEK region, one finds magnetically-dominated solutions in the extreme Kerr black hole with finite angular momentum outflow. This result is achieved using a perturbative analysis up to the second order.
33 pages, 2 figures; v2: matches published version in JCAP
References in corpus (9)
- Near-horizon symmetries of extremal black holes
- Disk-Jet Coupling in Black Hole Accretion Systems I: General Relativistic Magnetohydrodynamical Models
- Cargese Lectures on the Kerr/CFT Correspondence
- Black Hole Magnetospheres
- Higher Order Terms of Kerr Parameter for Blandford-Znajek Monopole Solution
- Electromagnetic power of merging and collapsing compact objects
- Force-Free Electrodynamics around Extreme Kerr Black Holes
- Fourth-order split monopole perturbation solutions to the Blandford-Znajek mechanism
- Consistent Blandford-Znajek Expansion
Cited by in corpus (6)
- Blandford--Znajek monopole expansion revisited: novel non-analytic contributions to the power emission
- Blandford-Znajek jets in MOdified Gravity
- Force-free magnetosphere attractors for near-horizon extreme and near-extreme limits of Kerr black hole
- The Non-Null and Force-Free Electromagnetic Field
- Universality of the Blandford-Znajek emission in stationary and axisymmetric spacetimes
- Kerr black hole in presence of force-free magnetic field