2015/03/17 by Zhen Pan, Cong Yu · 24 citations
Physics and Astronomy · #Angular momentum #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Magnetic field #Magnetic monopole #Perturbation (astronomy) #Physics #Plasma #Pulsars and Gravitational Waves Research #Quantum electrodynamics #Quantum mechanics #Rotating black hole #Toroid #astro-ph.HE #gr-qc
paper · pdf · doi:10.1103/physrevd.91.064067
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 91(6) (American Physical Society) · 1 fig; PRD in press
arxiv created 2015/03/17 · openalex publication_date 2015/03/30 · arxiv updated 2015/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The Blandford-Znajek (BZ) mechanism describes a physical process for the energy extraction from a spinning black hole (BH), which is believed to power a great variety of astrophysical sources, such as active galactic nuclei and gamma ray bursts. The only known analytic solution to the BZ mechanism is a split monopole perturbation solution up to O(a2), where a is the spin parameter of a Kerr black hole. In this paper, we extend the monopole solution to higher order \ensuremath∼O(a4). We carefully investigate the structure of the BH magnetosphere, including the angular velocity of magnetic field lines \mathrm\ensuremathΩ, the toroidal magnetic field B^\ensuremathφ, as well as the poloidal electric current I. In addition, the relevant energy extraction rate \stackrel\ifmmode \else \textperiodcentered \fiE and the stability of this high-order monopole perturbation solution are also examined.