# BLACK HOLE MAGNETOSPHERES

@article{Nathanail2014BLACKHM, title={BLACK HOLE MAGNETOSPHERES}, author={Antonios Nathanail and Ioannis Contopoulos}, journal={The Astrophysical Journal}, year={2014}, volume={788} }

We investigate the structure of the steady-state force-free magnetosphere around a Kerr black hole in various astrophysical settings. The solution Ψ(r, θ) depends on the distributions of the magnetic field line angular velocity ω(Ψ) and the poloidal electric current I(Ψ). These are obtained self-consistently as eigenfunctions that allow the solution to smoothly cross the two singular surfaces of the problem, the inner light surface inside the ergosphere, and the outer light surface, which is…

## 38 Citations

Black hole magnetospheres in the Born–Infeld theory

- PhysicsInternational Journal of Modern Physics D
- 2020

We study the force-free electrodynamics on rotating black holes in the Born–Infeld (BI) effective theory. The stream equation describing a steady and axisymmetric magnetosphere is derived. From its…

The structure of magnetically dominated energy-extracting black hole magnetospheres: Dependencies on field line angular velocity

- PhysicsProgress of Theoretical and Experimental Physics
- 2019

If a magnetically dominated magnetosphere is to extract a black hole’s rotational energy and transmit it to distant regions, then the inner light surface of that magnetosphere must lie within the…

Analytic Properties of Force-free Jets in the Kerr Spacetime. III. Uniform Field Solution

- Physics
- 2015

The structure of the steady axisymmetric force-free magnetosphere of a Kerr black hole (BH) is governed by a second-order partial differential equation of Aϕ depending on two “free” functions and ,…

Magnetosphere structure of a Kerr black hole: Marginally force-free equatorial boundary condition

- PhysicsPhysical Review D
- 2018

The role of equatorial boundary condition in the structure of a force-free black hole magnetosphere was rarely discussed, since previous studies have been focused on the field lines entering the…

Force-free electrodynamics near rotation axis of a Kerr black hole

- PhysicsClassical and Quantum Gravity
- 2020

Despite their potential importance for understanding astrophysical jets, physically realistic exact solutions for magnetospheres around Kerr black holes have not been found, even in the force-free…

Magnetosphere of a spinning black hole and the role of the current sheet

- PhysicsPhysical Review D
- 2018

We revisit the problem of a spinning black hole immersed in a uniformly magnetized plasma within the context of force-free electrodynamics. Such configurations have been found to relax to stationary…

Spacetime approach to force-free magnetospheres

- Physics
- 2014

Force-Free Electrodynamics (FFE) describes magnetically dominated relativistic plasma via non-linear equations for the electromagnetic field alone. Such plasma is thought to play a key role in the…

Stationary electro-vacuum fields around black holes

- Physics
- 2014

This is the second lecture of `RAGtime' series on electrodynamical effects near black holes. We will summarize the basic equations of relativistic electrodynamics in terms of spin-coefficient…

Black hole magnetosphere with small-scale flux tubes

- PhysicsMonthly Notices of the Royal Astronomical Society
- 2019

There is observational evidence that the X-ray continuum source that creates the broad fluorescent emission lines in some Seyfert Galaxies may be compact and located at a few gravitational radii…

Properties of Trans-fast Magnetosonic Jets in Black Hole Magnetospheres

- PhysicsThe Astrophysical Journal
- 2020

Traveling across several orders of magnitude in distance, relativistic jets from strong gravity regions to asymptotic flat spacetime regions are believed to consist of several general relativistic…

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