Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21640209d&link_type=abstract
American Astronomical Society, AAS Meeting #216, #402.09; Bulletin of the American Astronomical Society, Vol. 41, p.874
Astronomy and Astrophysics
Astronomy
Scientific paper
We present an emerging-flux detection method and code that are being incorporated into the early warning pipeline for the Solar Dynamics Observatory. SWAMIS is a magnetic feature tracking code that has been used primarily to probe the small scale solar dynamo; we have adapted it to find large scale bipolar emergences of new flux in time series of HMI full-disk line of sight magnetograms. The new code, SWAMIS-EF, performs feature identification and tracking on multiple spatial scales to identify large flux emergence events that, at full instrument resolution, segment into large clusters of small feature motions. SWAMIS-EF generates flux-emergence event records that highlight all large scale flux emergences (>10 EMx of magnetic flux) in the favorable portion of the solar disk (nominally, within 0.86 Rs of disk center). A variant on the code, "SWAMIS-S", will describe the motion and interactions of every single resolvable magnetic feature on the Sun, and is anticipated by the end of Mission Year 1. The SWAMIS-EF event stream will enable both improved space weather prediction and retrospective "data mining" studies of the solar dynamo and the effect of flux emergence on the chromosphere and corona.
DeForest Craig
Peterson Jeffrey
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