Screw instability of the magnetic field connecting a rotating black hole with its surrounding disk
arXiv:astro-ph/0309754 · doi:10.1086/380782
Abstract
Screw instability of the magnetic field connecting a rotating black hole (BH) with its surrounding disk is discussed based on the model of the coexistence of the Blandford-Znajek (BZ) process and the magnetic coupling (MC) process (CEBZMC). A criterion for the screw instability with the state of CEBZMC is derived based on the calculations of the poloidal and toroidal components of the magnetic field on the disk. It is shown by the criterion that the screw instability will occur, if the BH spin and the power-law index for the variation of the magnetic field on the disk are greater than some critical values. It turns out that the instability occurs outside some critical radii on the disk. It is argued that the state of CEBZMC always accompanies the screw instability. In addtition, we show that the screw instability contributes only a small fraction of magnetic extraction of energy from a rotating BH.
arXiv comment18 pages, 13 figures; Accepted by ApJ
References in corpus (8)
- XMM-EPIC observation of MCG-6-30-15: Direct evidence for the extraction of energy from aspinning black hole?
- Evolution characteristics of central black hole of magnetized accretion disc
- Accretion Disk Torqued by a Black Hole
- Extracting Energy from a Black Hole through Its Disk
- Screw instability in black hole magnetospheres and a stabilizing effect of field-line rotation
- Magnetic coupling of a rotating black hole with its surrounding accretion disk
- Observational Signatures of the Magnetic Connection between a Black Hole and a Disk
- Screw Instability and Blandford-Znajek Mechanism
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