Magnetic Annihilation and Reconnection in Two Dimensions

Details Magnetic Annihilation and Reconnection in Two Dimensions Magnetic Annihilation and Reconnection in Two Dimensions

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...505..363w&link_type=abstract

The Astrophysical Journal, Volume 505, Issue 1, pp. 363-368.

Astronomy and Astrophysics

Astronomy

7

Magnetohydrodynamics: Mhd, Plasmas

Scientific paper

The problems of incompressible, planar, magnetic annihilation and reconnection are discussed. We first emphasize that steady-state reconnection solutions can be constructed from annihilation models involving harmonic velocity fields. We show, however, that the only harmonic velocity profile capable of supporting inviscid magnetic annihilation is the traditional stagnation point flow phi = -alphaxy. The implication is that further steady-state planar reconnection models derived from annihilation solutions are impossible. We go on to show that certain classes of nonharmonic stream functions allow reconnection solutions to be developed, once the constraint of time independence is relaxed. In particular, we construct an exact reconnection model based on cellular inflows into a periodic assemblage of magnetic X-points.

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