Magnetic Twist of EUV Coronal Loops Observed by TRACE

Details Magnetic Twist of EUV Coronal Loops Observed by TRACE Magnetic Twist of EUV Coronal Loops Observed by TRACE

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..369..299k&link_type=abstract

New Solar Physics with Solar-B Mission ASP Conference Series, Vol. 369, proceedings of the conference held 8-11 November, 2005 a

Physics

Scientific paper

The constriction of plasma into a loop without dispersion may be explained if the magnetic field of the loop is twisted. Based on this idea, Chae and Moon (2005) developed a method of determining magnetic twist of coronal loops by analyzing coronal images and photospheric magnetograms together. We attempt to determine the number distribution of magnetic twist of coronal loops, by expanding their method to more number of EUV loops observed by TRACE 171 Å. Preliminary results we have obtained from three loops indicate that these loops have twist values from 1.5π to 2.5π, which suggests that the winding number of EUV coronal loop may be around one.

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