File:Nugget f1.png

Figure 1: Centroid positions of the radio pulsations measured at several frequencies by the Nançay Radioheliograph and the simultaneous RHESSI Clean images in the 18-25 keV band (50%, 70%, and 90% contours) in the 5 December 2006 flare 11:16 UT. Time bins of 0.15 seconds having a radio flux above the average are shown as black dots for the four frequencies in which pulsations were present. Note the different size of the 236 MHz picture. An X-ray footpoint was observed at higher energies (see Fig. 2).