1. RHESSI Observations of the 29-Oct-2003 Flare

2. 29-Oct-2003 General Info 29-OCT-03 GOES Start: 20:37, Peak: 20:49, End 21:01 Size X10 Position S19W09 (AR486)

3. 29-Oct-2003 (cont.)

7. 29-Oct-2003 RHESSI Images (S. Krucker See: http://sprg.ssl.berkeley.edu/~krucker/hessi/oct29.html) http://sprg.ssl.berkeley.edu/~krucker/hessi/oct29.html Red contours 15 – 20 keV, blue 30 – 50, 50 – 100 keV TRACE 195 and 1600 A images.

8. 29-Oct-2003 (cont.) Early phase: only low- energy emission

9. 29-Oct-2003 (cont.) Low energy source (thermal? looptop?) in between HXR footpoints.

10. 29-Oct-2003 (cont.) Note that the footpoints have moved. The loop arcade is visible in 195A which has some high T response.

11. 29-Oct-2003 (cont.) This plot tracks the footpoint motion. They start close together and move apart, as in the standard 2-ribbon case.

12. 29-Oct-2003 RHESSI Movie (S.Krucker) http://sprg.ssl.berkeley.edu/~krucker/hessi/movie_oct29/trace_hsi_oct29.ht mlhttp://sprg.ssl.berkeley.edu/~krucker/hessi/movie_oct29/trace_hsi_oct29.ht ml Red contours 15 – 20 keV, blue 30 – 50, 50 – 100 keV TRACE 195 and 1600 A images.

13. 29-Oct-2003 Conclusions: Big flare, some problems with particles, pointing, but images are possible Outward movement of loop arcade footpoints is clearly visible in HXR images.