A solar type II radio burst from CME-coronal ray interaction:
simultaneous radio and EUV imaging
release_ev3k5tu26zh4fmh7lbcz777q5a
by
Yao Chen, Guohui Du, Li Feng, Shiwei Feng, Xiangliang Kong, Fan Guo,
Bing Wang, Gang Li
2014
Abstract
Simultaneous radio and extreme ultraviolet (EUV)/white-light imaging data are
examined for a solar type II radio burst occurring on 2010 March 18 to deduce
its source location. Using a bow-shock model, we reconstruct the 3-dimensional
EUV wave front (presumably the type-II emitting shock) based on the imaging
data of the two STEREO spacecraft. It is then combined with the Nançay
radio imaging data to infer the 3-dimensional position of the type II source.
It is found that the type II source coincides with the interface between the
CME EUV wave front and a nearby coronal ray structure, providing evidence that
the type II emission is physically related to the CME-ray interaction. This
result, consistent with those of previous studies, is based on simultaneous
radio and EUV imaging data for the first time.
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