a) Space-time plots along slices S1, S2, S3, and S4 using the AIA 131, 94, 335, and 171 Å images. b) Top: height-time profile of the flux rope and GOES soft X-ray flux (red) in the 1−8 Å channel. Middle: speed profile derived from the height-time measurements of the flux rope. Bottom: acceleration profile of the flux rope plotted with RHESSI hard X-ray flux (blue) in the 12−25 keV energy channel. The two vertical dotted lines indicate the timing of the 171 Å brightenings and hard X-ray bursts.