Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh13b1941b&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH13B-1941
Astronomy and Astrophysics
Astrophysics
[7519] Solar Physics, Astrophysics, And Astronomy / Flares, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields
Scientific paper
We compare abrupt permanent changes of the LOS magnetic field during strong flares observed by GONG instruments with location of the flares footpoints obtained from RHESSI hard X-ray (HXR) observations. The hard X-ray high-energy emission in solar flares generally comes from the footpoints of magnetic loops in the chromosphere. The high spatial resolution of RHESSI allows us to locate HXR sources with high accuracy. To minimize projection errors due to the difference in GONG and RHESSI observational heights as well as uncertainties in magnetic field tilt angle, we concentrate on the flares occurred near the solar disk center. We present the analysis and results of this comparison.
Burtseva Olga
Martinez Oliveros J.
Petrie G. J.
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