English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Conditions of Velikhov-Chandrasekhar magneto-rotational instability in idealand non-ideal plasmas are examined. Linear WKB analysis of hydromagneticaxially symmetric flows shows that in the Rayleigh-unstable hydrodynamic casewhere the angular momentum decreases with radius, the MRI branch becomesstable, and the magnetic field suppresses the Rayleigh instability at smallwavelengths. We investigate the limiting transition from hydromagnetic flows tohydrodynamic flows. The Rayleigh mode smoothly transits to the hydrodynamiccase, while the Velikhov-Chandrasekhar MRI mode completely disappears withoutthe magnetic field. The effects of viscosity and magnetic diffusivity in plasmaon the MRI conditions in thin accretion discs are studied. We find the limitson the mean free-path of ions allowing MRI to operate in such discs.

On properties of Velikhov-Chandrasekhar MRI in ideal and non-ideal plasma