Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..415...15f&link_type=abstract
The Second Hinode Science Meeting: Beyond Discovery-Toward Understanding ASP Conference Series, Vol. 415, proceedings of a meeti
Astronomy and Astrophysics
Astronomy
Scientific paper
We investigate the effect of the local magnetic field on the evolution and heating of coronal bright points (BPs) by examining a BP in a coronal hole and a BP in the nearby quiet sun. We attempt to discriminate the heating source of BPs by correlating fluctuations in emission in TRACE 171 Å images, to changes in the unsigned magnetic flux of the associated bipolar region using GONG magnetograms, and potential field extrapolations. We confirm that changes in emission of the larger, quiet-sun bright point can be correlated to fluctuations in the total unsigned magnetic flux as predicted by previous studies. The quiet sun BP also appears to have a potential magnetic configuration over the observation period. However changes in emission in the smaller, coronal hole bright point appears to be less correlated to changes in the bipolar region. We also could not reproduce a potential-like extrapolation at any time during the observation period, possibly indicating the CH bright point may be non-potential.
DeLuca Edward E.
Farid Samaiyah
Govindan Ramesh
Saar Steve
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