Where is the electric current driven in the Blandford-Znajek process?

Kenji Toma, Fumio Takahara

Research output: Contribution to journalArticlepeer-review

Abstract

The Blandford-Znajek process, the steady electromagnetic energy extraction from a rotating black hole, is widely believed to work for driving relativistic jets, although it is still under debate where the electric current is driven. We address this issue analytically by investigating the time-dependent state in the Boyer-Lindquist and Kerr-Schild coordinate systems. This analysis suggests that a non-ideal magnetohydrodynamic region is required in the time-dependent state, while not in the steady state.

Original languageEnglish
Pages (from-to)19-22
Number of pages4
JournalProceedings of the International Astronomical Union
Volume12
Issue numberS324
DOIs
Publication statusPublished - 2016 Jan 1

Keywords

  • MHD
  • black hole physics
  • galaxies: jets
  • gamma rays: bursts
  • plasmas

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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