Variations of the magnetic fields in large solar flares

Details Variations of the magnetic fields in large solar flares Variations of the magnetic fields in large solar flares

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ssrv..107...99s&link_type=abstract

Space Science Reviews, v. 107, Issue 1, p. 99-102 (2003).

Computer Science

Magnetic Fields, Solar Flares, Sun

Scientific paper

We present preliminary results from high resolution observations obtained with the Michelson Doppler Imager (MDI) instrument on the SOHO of two large solar flares of 14 July 2000 and 24 November 2000. We show that rapid variations of the line-of-sight magnetic field occured on a time scale of a few minutes during the flare explosions. The reversibility/irreversibility of the magnetic field of both active regions is a very good tool for understanding how the magnetic energy is released in these flares. The observed sharp increase of the magnetic energy density at the time of maximum of the solar flare could involve an unknown component which deposited supplementary energy into the system.

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