XRT Picture of the Week (XPOW)

XRT Picture of the Week (XPOW)

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2013 October 31

Click for QuickTime movies with better time resolution. Also available on YouTube.

More Flares from AR 11882!

Active Region 11882 continued to be quite productive after the two events covered in our previous entry from two days ago. Here we have two more M-flares that were observed on October 28th, separated by about 3.5 hours. Above the movies is an observation taken by the Helioseismic and Magnetic Imager (HMI) aboard the SDO satellite, which shows us the magnetic field configuration on the Sun's surface (white is positive polarity and black is negative). This region produced so many flares largely because of its complex magnetic structure, which dictates the structure of the loops seen in the XRT movies. After these events, AR 11882 quieted down considerably as the positive and negative polarities drifted apart and the region became less complex overall. Mouse over of the HMI image to see what it looks like today. This reduction in complexity means it's much less likely that we'll be seeing anymore large flares from AR 11882.

Keywords: Flare, Loop Expansion, Magnetogram
Filters: Be_thin

(Prepared by Patrick McCauley)

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