Interaction of two loops in NOAA 7773.

Details Interaction of two loops in NOAA 7773. Interaction of two loops in NOAA 7773.

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999arbei..33...81y&link_type=abstract

Astrophysics Reports, Publications of the Beijing Astronomical Observatory, No. 33, p. 81 - 88

Astronomy and Astrophysics

Astrophysics

Solar Active Regions: Solar Flares, Loops: Solar Flares

Scientific paper

A flare, occurred at 05:32 UT on 5 September 1994 in the active region NOAA 7773, is analyzed. The authors found that this flare was triggered by the interaction of a small loop and a large loop. The small loop connected a decaying of magnetic flux, not an emergence of magnetic flux as usually shown. The two loops were precisely extrapolated by the Boundary Element Method with assumption of force-free field and the observed photospheric vector magnetic field. This finding extends Hanaoka result, the small loop connecting the emerging flux region, to the decaying of magnetic flux, showing somewhat common behavior both in the emerging flux region and decaying flux region.

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