A new look at the instability of a stratified horizontal magnetic field

D. W. Hughes Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, Colorado, 80309, U.S.A.; Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge, CB3 9EW, UK

F. Cattaneo Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, Colorado, 80309, U.S.A.

Abstract

Although the undular instabilities of a stratified horizontal magnetic field have been studied in a number of contexts we believe that the physical mechanism responsible for the instability has not been fully explained. In this paper we present a new explanation of why these instabilities occur, considering in detail the differing cases of two-dimensional and three-dimensional motions.

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A new look at the instability of a stratified horizontal magnetic field

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A new look at the instability of a stratified horizontal magnetic field

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