A Powerful Local Shear Instability in Weakly Magnetized Disks. I. Linear Analysis by Steven A. Balbus and John F. Hawley 2026-11-05
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The Astrophysical Journal 376, pp.214–222. Sections2.1–2.3 give the local linear dispersion and stability criterion; section2.5 explains the magnetic-tension mechanism. The hosted PDF also includes the companion nonlinear-evolution paper after the first article.
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