Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh11a1616z&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SH11A-1616
Astronomy and Astrophysics
Astrophysics
[7509] Solar Physics, Astrophysics, And Astronomy / Corona, [7511] Solar Physics, Astrophysics, And Astronomy / Coronal Holes, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields
Scientific paper
A large coronal hole occurs in the northern hemisphere since July 2, 2010, and lasts more than three solar rotations. The different shapes of the coronal hole shown in the images simultaneously observed by SDO/AIA, Stereo A and B EUVI provide the opportunity to figure out the geometric effects included in the coronal hole shape. Modeling the significant time variation of the coronal hole shape is a challenge. We use HMI synchronic frames at the times of 2010.07.02, 2010.07.29, and 2010.08.25 and the potential field source surface model to reproduce the time variation of observed coronal hole. The study will show ways to identify the boundary of coronal holes, and to improve the method of modeling coronal holes.
Hoeksema Jon Todd
Liu Ya-Ying
Zhao Xiaopeng
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