Magnetic reconnection mechanism for Type II white-light flares.

Details Magnetic reconnection mechanism for Type II white-light flares. Magnetic reconnection mechanism for Type II white-light flares.

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...320..300l&link_type=abstract

Astronomy and Astrophysics, v.320, p.300-304

Astronomy and Astrophysics

Astrophysics

16

Magnetohydrodynamics (Mhd), Plasmas, Sun: Photosphere, Flares

Scientific paper

Based on the concept that the heating source for Type II white-light flares (WLFs) may be located in the photosphere, we suggest that Type II WLF is reduced by magnetic reconnection in a weakly ionized plasma. A plasmoid may rise by magnetic buoyancy from the subphotosphere into a sunspot region and then expand to form a current sheet in which a type of resistive instability takes place. The effect of neutral atoms on the resistive instability is estimated and found to produce a growth time of typically ten minutes that agrees well with observations.

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