The Pressure Limitations on Flux Pile-Up Magnetic Reconnection

Details The Pressure Limitations on Flux Pile-Up Magnetic Reconnection The Pressure Limitations on Flux Pile-Up Magnetic Reconnection

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.3105l&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #31.05; Bulletin of the American Astronomical Society, Vol. 31, p.869

Astronomy and Astrophysics

Astronomy

Scientific paper

Flux pile-up magnetic reconnection was thought to be able to provide fast energy dissipation a strongly magnetized plasma, for example, in solar flares. We examine the problem of the plasma pressure limitations on the rapidity of flux pile-up reconnection. It is shown that for a two-dimensional stagnation point flow with nonzero vorticity the magnetic merging rate cannot exceed the Sweet-Parker scaling in a low-beta plasma, which is too slow to explain flares. Moreover, the solution has some undesireable properties such as a diffusion layer at the external boundary and the massively increasing inflow speed. The pressure limitation appears to be somewhat less restrictive for three-dimensional flux pile-up. This work was supported by NSF grant ATM-9813933.

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