10 citations · 10 across the 4 of their papers we have counts for
4 papers
Hamiltonian structure of single-helicity, incompressible magnetohydrodynamics and application to magnetorotational instability
M. Furukawa, M. Hirota
A four-field reduced model of single helicity, incompressible MHD is derived in cylindrical geometry. An appropriate set of noncanonical variables is found, and the Hamiltonian, th…
Applicability criteria of proper charge neutrality and special relativistic MHD models extended by two-fluid effects
Shuntaro Yoshino, Makoto Hirota, Yuji Hattori
The applicability of relativistic magnetohydrodynamics (RMHD) and its generalization to two-fluid models (including the Hall and inertial effects) is systematically investigated by…
A sufficient condition for inviscid shear instability: Hurdle theorem and its application to alternating jets
Kengo Deguchi, Makoto Hirota, Timothy Dowling
We propose a simple method to identify unstable parameter regions in general inviscid unidirectional shear flow stability problems. The theory is applicable to a wide range of basi…
Variational Necessary and Sufficient Stability Conditions for Inviscid Shear Flow
Makoto Hirota, Philip J. Morrison, Yuji Hattori
A necessary and sufficient condition for linear stability of inviscid parallel shear flow is formulated by developing a novel variational principle, where the velocity profile is a…