Magnetic Merging in Colliding Flux Tubes

Details Magnetic Merging in Colliding Flux Tubes Magnetic Merging in Colliding Flux Tubes

1994-08-14

arxiv.org/abs/astro-ph/9408041v1

Astronomy and Astrophysics

Astrophysics

uuencoded-compressed-tarred PostScript (un-tars to 2 postscript files), 15pp text + 3 figures. Accepted for publication in The

Scientific paper

10.1086/175282

We develop an analytical theory of reconnection between colliding, twisted magnetic flux tubes. Our analysis is restricted to direct collisions between parallel tubes and is based on the collision dynamics worked out by Bogdan (1984). We show that there is a range of collision velocities for which neutral point reconnection of the Parker-Sweet type can occur, and a smaller range for which reconnection leads to coalescence. Mean velocities within the solar convection zone are probably significantly greater than the upper limit for coalescence. This suggests that the majority of flux tube collisions do not result in merging, unless the frictional coupling of the tubes to the background flow is extremely strong.

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