Current-driven instabilities in weakly ionized disks

E. Liverts, M. Mond, V. Urpin

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Cool weakly ionized gaseous rotating disk form the basis for many models in astrophysics objects. Instabilities against perturbations in such disks play an important role in the theory of the formation of stars and planets. Traditionally, axisymmetric magnetohydrodynamic (MHD) and recently Hall-MHD instabilities have been thoroughly studied as providers of an efficient mechanism for radial transfer of angular momentum, and of density radial stratification. In the current work, the Hall instability against axisymmetric perturbations in incompressible rotating fluid in external poloidal and toroidal magnetic field is considered.

Original languageEnglish
Pages (from-to)849-854
Number of pages6
JournalAstronomische Nachrichten
Volume329
Issue number8
DOIs
StatePublished - 1 Oct 2008

Keywords

  • Accretion, accretion disks
  • Instabilities
  • Magnetohydrodynamics (MHD)

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