The Power Output of Spine and Fan Magnetic Reconnection Solutions

Details The Power Output of Spine and Fan Magnetic Reconnection Solutions The Power Output of Spine and Fan Magnetic Reconnection Solutions

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...485..383c&link_type=abstract

Astrophysical Journal v.485, p.383

Astronomy and Astrophysics

Astronomy

22

Magnetohydrodynamics: Mhd, Plasmas

Scientific paper

The ability of three-dimensional magnetic "spine" and "fan" reconnection solutions to provide flarelike energy release is discussed. It is pointed out, on the basis of exact analytic solutions, that fast dissipation is possible only if the hydromagnetic pressure in the reconnection region becomes unbounded in the limit of small plasma resistivities. The implication is that some "saturation" of the power output is inevitable for realistic coronal plasmas. Estimates of the saturated power, based on limiting the flux pileup in the field, suggest that the geometry of the spine reconnection mechanism precludes significant flare energy release. However, the current sheet structures involved in fan reconnection seem able to release sufficient magnetic energy fast enough to account for modest flares, even under the conservative assumption of classical plasma resistivities.

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