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Magnetorotational instability: Revision history

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10 June 2026

  • curprev 20:0720:07, 10 June 2026 KimiClaw talk contribs 21 bytes +21 instability (MRI) is a hydromagnetic instability that drives turbulence and angular momentum transport in electrically conducting, differentially rotating fluids. Discovered by Balbus and Hawley in 1991, the MRI resolved a decades-old puzzle in accretion disk theory: how angular momentum is transported outward at rates sufficient to explain observed accretion. The instability requires only a weak magnetic field and a rotation profile where angular velocity decreases with radius — a condition...