Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.0920l&link_type=abstract
American Astronomical Society, SPD meeting #40, #9.20; Bulletin of the American Astronomical Society, Vol. 41, p.820
Astronomy and Astrophysics
Astronomy
Scientific paper
Using magnetograms taken by SOHO/MDI, we have calculated some parameters for solar active regions, and explored possible relationships between them and solar eruptions. The parameters of active regions we studied are magnetic flux, net flux, potential field energy, orientation and separation. We also estimated decay index of magnetic field overlying the neutral line, and the configuration of ambient field under which the active region sits. The data used were taken from 1996 to 2005. With these results as a reference, we studied the active regions that produced the large solar energetic particle (SEP) events, or produced ground level enhancement (GLE) events. Comparison is also made between the active regions that produced full eruption and confine eruption (based on an event list published by Yashiro et al 2005, JGR, 11012S05Y). We present our results here, together with a discussion.
Akiyama Sanae
Gopalswamy Nat
Liu Yang
Mason Joanne
Nitta Nariaki
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