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| Paper: |
Appearance of Chromospheric Magnetic Fields above Sunspots |
| Volume: |
118, First Advances in Solar Physics Euroconference: Advances in the Physics of Sunspots |
| Page: |
116 |
| Authors: |
Wang, J.; Shi, Z.; Yang, X.; Zirin, H. |
| Abstract: |
It has been revealed by high resolution BBSO Hα magnetograms that the chromospheric magnetic fields are highly filamentary in nature. The superpenumbrae of sunspots, arch filament systems, surges and spicules are all tracing the chromospheric magnetic fibrils. Instead of an uniform canopy above a sunspot, there is a `fountain' of magnetic fibrils. The apparent localized polarity reversal, revealed from Huairou Hβ magnetograms was also identified in Hα magnetograms, and found to occur in three categories: footpoints of emerging flux regions, preflare sites, and sites of discontinuous field azimuth within a mature sunspot. |
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