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Fig. 4.

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Shock wave fitting was done using multi-viewpoint observations from STEREO B/COR2 (top panel) and SOHO/LASCO C2 (bottom panel) at 00:24 UT. This is the time of observation of the highest triangulated frequency pair of the LF-type II burst. The red spherical mesh represents the fit to the white light shock. The regions indicated as under-fitted are the regions that are not accounted for in the shock wave modelling. The red and the fuchsia points are the centroids of the highest frequency LF-type II sources and the dark-shaded region is the full source region obtained from radio triangulation.

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