Fields and Flares: Understanding the Complex Magnetic Topologies of Solar Active Regions

摘要: Sunspots are regions of decreased brightness on the visible surface Sun (photosphere) that associated with strong magnetic fields. They have been found to be locations solar flares, which occur when energy stored in sunspot fields is suddenly released. The processes involved flaring and link between flares still not fully understood, this thesis aims gain a better understanding these topics. field evolution number examined using high spatial resolution data from Hinode spacecraft. research presented gives insight into both photospheric coronal regions. Significant increases vertical strength, current density, inclination angle towards observed photosphere just hours before flare occurs, much shorter timescales than previously studied. First observations changes across neutral line (generally believed typical source region flares) also discovered. 3D extrapolation methods used study field, as boundary condition. Magnetic free increase significantly few flare, decrease afterwards, similar trend parameter observed. Evidence partial Taylor relaxation detected after predicted by several previous studies. results outlined show particular vital furthering our nature sunspots its processes.