Can We Recover 3D Magnetic Topology in Sunspots Directly from Observation?

Poster presented by Summer Undergraduate Research Experience (SURE) student Samuel Badman (Oxford) at the Irish National Astronomy Meeting in TCD (www.inam2014.com). 

Abstract: We use Hα 656.28nm data of the upper chromosphere from the CRISP spectropolarimeter at the SST of Active Region 11856. For the sunspot, we produce:

• Dominant Period maps at unprecedented resolution from iterative polynomial fitting of pixel time-series power spectra.

• Resultant B-field inclination maps. (See Background)

• Magnetograms of the lower solar photospheric surface show compelling similarity.