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Lucas Tarrgraduate student
Office: EPS 216 |
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If you try back in a bit, and this page may advance past 1997. Maybe get a little CSS going on, some nice looking headers, colors pleasing to the eye...mood lighting. But I won't lie. Probably not.
I use the Minimum Current Corona (MCC) to model the evolution of photospheric magnetic fields, which are themselves modeled at each time as a Magnetic Charge Topology (MCT). My major contribution has been to allow for regions with variable amounts of flux, the point of which is to study regions with emerging and/or "submerging" flux. I use quotes for the latter, while active-region scale emergence does seem to fit the cartoon of a large, inverted-U-shaped fluxtube crossing photospheric boundary, active-region scale submergence often does not. Instead, each concentrated footpoint appears to separately diffuse and break up into smaller, lower strength chunks by reconnection with the surrounding quiet Sun field.
I have currently applied this framework to a couple regions:
AR11112:
Here's an HMI magnetogram movie of NOAA Active Region 11112, which had a GOES M3.0 flare on October 16th, 2010.
And here's the same region, only now looking at 171 Angstrom data from AIA, rather than a magnetogram from HMI. Just for perspective, the tick marks in those movies are each about the size of Earth. These systems are big!
Test of java script movie of the same thing.
AR11158:
My recent work is a case study focusing on NOAA AR 11158.
List of observed supposed magnetic null points:
See here.
Last Updated: June 21, 2011