All Figures

Figure 1: Observations of a M1.2 flare on 2002 April 15. a), b) Line-integrated intensity time series at a fixed slit position. The labels A and B mark strips with equal widths of 6 pixels along the slit. c), d) EIT 195 Å  images. The times at which they were recorded are marked by arrows at the top of  a) and  b). The SUMER slit is indicated as two vertical lines, and positions of two cuts (denoted A and B in a) and  b)) are marked. In  d) a candidate of the oscillating loop (outlined with diamonds) is fitted with a circular model (dark curve). The apex position of the modelled loop is marked by a triangle.

Open with DEXTER


In the text

Figure 2: a) Doppler shift time series at a fixed slit position. The redshift is represented with the bright color, and the blueshift with the dark color. The labels A and B mark strips with widths of 6 pixels along the slit. b) Line-integrated intensity time series with a removal of the background trend, which is taken as a temporal smoothing with a window of  pixels (17 min). c) Time profiles of the Fe XIX line-integrated intensity for cut B, averaged along the slit within the two horizontal lines.

Open with DEXTER


In the text

Figure 3: a) Evolution of Doppler shift and  b) of line-integrated intensity in the Fe XIX line for cut B. The thick solid curves are the best fits with a damped sine function. For the curves in  a) and  b), the background shift (V0 in Eq. (1)) and the background intensity have been removed, respectively. The error bars represent the standard deviation of shifts or intensities along the slit for cut B. c) Evolution of continuum intensity (thin solid curves), obtained by integration at the line wings of both S III and Ca X for cut B, and background removal similar as in  b). The thick solid curve is the 3-pixel smoothing of the thin one. As a comparison, the intensity curve of Fe XIX shown in b) is also plotted (dotted line).

Open with DEXTER


In the text