Abstract We study the linear stability of a planar interface separating two fluids in relative motion, focusing on symmetric configuration where have same properties (density, temperature, magnetic field strength, and direction). consider most general case with arbitrary sound speed cs, Alfvén vA, orientation. For instability associated fast mode, we find that lower bound unstable shear velocit...

We consider model selection for non-linear dynamic equations with more candidate variables than observations, based on a general class of non-linear-in-the-variables functions, addressing possible location shifts by impulse-indicator saturation. After an automatic search delivers a simplified congruent terminal model, an encompassing test can be implemented against an investigator’s preferred n...