HARM: A numerical scheme for general relativistic magnetohydrodynamics

Charles F. Gammie, Jonathan C. MCKinney, Gábor Tóth

Research output: Contribution to journalArticlepeer-review

Abstract

We describe a conservative, shock-capturing scheme for evolving the equations of general relativistic magnetohydrodynamics. The fluxes are calculated using the Harten, Lax, & van Leer scheme. A variant of constrained transport, proposed earlier by Tóth, is used to maintain a divergence-free magnetic field. Only the covariant form of the metric in a coordinate basis is required to specify the geometry. We describe code performance on a full suite of test problems in both special and general relativity. On smooth flows we show that it converges at second order. We conclude by showing some results from the evolution of a magnetized torus near a rotating black hole.

Original languageEnglish (US)
Pages (from-to)444-457
Number of pages14
JournalAstrophysical Journal
Volume589
Issue number1 I
DOIs
StatePublished - May 20 2003

Keywords

  • Accretion, accretion disks
  • Black hole physics
  • MHD
  • Methods: numerical

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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