Collisionless drift-tearing modes in the magnetopause

Details Collisionless drift-tearing modes in the magnetopause Collisionless drift-tearing modes in the magnetopause

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9520889g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Dec. 1, 1990, p. 20889-20902.

Physics

9

Collisionless Plasmas, Flux Transfer Events, Magnetopause, Plasma Drift, Tearing Modes (Plasmas), Interplanetary Magnetic Fields, Magnetohydrodynamics, Riccati Equation

Scientific paper

The linear stability properties of collisionless drift-tearing modes are analyzed in a modified Harris equilibrium model of the magnetopause. Particular attention is paid to the relevance of the parametric behavior of growth rates to the 'magnetic percolation' theory of flux transfer event formation (Galeev et al., 1986). Numerical methods are used to solve the drift-tearing eigenmode equations and the results are compared with those previously obtained by analytical methods. The analytical results are found to correctly model important parametric dependencies but to typically overestimate the rate of growth. The eigenmode equations are numerically difficult, and an integration scheme utilizing Ricatti transforms is developed to affect their solution.

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