An interpretation of rapid changes in the magnetic field associated with solar flares

Details An interpretation of rapid changes in the magnetic field associated with solar flares An interpretation of rapid changes in the magnetic field associated with solar flares

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008an....329..786o&link_type=abstract

Astronomische Nachrichten, Vol.329, Issue 8, p.786

Mathematics

Logic

1

Sun: Flares, Sun: Magnetic Fields, Sun: Photosphere

Scientific paper

The energy source of a flare is the magnetic field in the corona. A topological model of the magnetic field is used here for interpreting the recently discovered drastic changes in magnetic field associated with solar flares. The following observational results are self-consistently explained: (1) the transverse field strength decreases at outer part of active regions and increases significantly in their centers; (2) the center-of-mass positions of opposite magnetic polarities converge towards the magnetic neutral line just after flares onset; (3) the magnetic flux of active regions decreases steadily during the course of flares. For X-class flares, almost 50% events show such changes.

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