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<H2 STYLE="color:darkgoldenrod">
Structure and evolution of active region</H2>
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<UL>
<LI><A HREF="Research_QCAR.html" TARGET=_blank>
Quantitative characterization of active-region magnetic structure based on geometric
property of force-free α</A>
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<LI><A HREF="Research_AEFT.html" TARGET=_blank>
Merging and Fragmentation in the Solar Active Region 10930 Caused by Emerging Magnetic Flux Tube with Asymmetric Field-Line Twist Distribution along Its Axis</A>
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<LI><A HREF="Research_DST.html" TARGET=_blank>
MHD Simulation for Investigating the Dynamic State Transition Responsible
for Solar Eruption in Active Region 12158</A>
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<LI><A HREF="Research_FCS.html" TARGET=_blank>
Structural properties of the solar flare-producing coronal current system developed in
emerging magnetic flux tube</A>
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<LI><A HREF="Research_doublepowerlaw.html" TARGET=_blank>
Distribution characteristics of coronal current density as indicator
for the occurrence of solar flare</A>
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<LI><A HREF="Research_evolution-path.html" TARGET=_blank>
MHD simulation for investigating the evolutionary path of solar magnetic field that emerges, structures itself, erupts, and produces flare</A>
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<LI><A HREF="Research_virial.html" TARGET=_blank>
Investigation of force-freeness of emerging magnetic fields via application of virial theorem to MHD simulations</A>
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<LI><A HREF="Research_scaling-law.html" TARGET=_blank>
Scaling laws for magnetic flux, free magnetic energy, and relative magnetic helicity in emerging flux region</A>
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<LI><A HREF="Research_SPevo.html" TARGET=_blank>
Characteristic development of magnetic shear in flare-producing sunspot</A>
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<LI><A HREF="Research_topo.html" TARGET=_blank>
Dynamic and topological features of emerging magnetic
fields</A>
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<LI><A HREF="Research_ARevo.html" TARGET=_blank>
Flare-producing active region's evolution characterized by magnetic helicity</A>
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<LI><A HREF="Research_SEC.html" TARGET=_blank>
Evaluation of force-free approximation of coronal magnetic field</A>
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<LI><A HREF="Research_3DCS.html" TARGET=_blank>
Comparison of MCC model of coronal magnetic field to MHD simulation</A>
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<LI><A HREF="Research_sig.html" TARGET=_blank>
Sigmoid structure of emerging flux tube</A>
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