The sequence W,R,L,R,L,R,L,R,L,R,L is repeated approx. 47 times, where W refers to the whole spectral window (1098-1138 Å, format 2), while L and R refer to the left and right part of this window - with a small overlap containing the Ca X 1115/2 and the Fe XIX 1118 line - which are repeated five times, alternating (both in format 38).
In a first approach, 229 "left" windows (format 38, 1108.26 Å on pixel 731) of 25.Oct.00 were analysed. This leads to a sequence of images approx. 6 minutes apart. - In a second approach, all formats were used; the 2D images are accordingly updated. - Meanwhile, EIT took images of the whole Sun approx. every 12 minutes. The SUMER slit points to a coronal loop system above an active region at the south east limb. During the time of the study, according to the events page, several events occured, but it is not easy to assign them to the data observed by SUMER. In two cases, significant intensity reactions in both "hot" and "cool" plasmas combined with significant reactions in line shifts and widths can be observed.
Representative lines were selected for analysis: One relatively cool transition region line, S III + Si III 1113.22 (30 000 - 63 000 K), one coronal line, Ca X 1115.51/2 (740 000 K), and one "hot" coronal line, that only shows up in flare situations, Fe XIX 1118.073 (7 700 000 K). The images below show the SUMER slit with time moving from left to right for approx. 25 hours. Shifts were determined relative to the (not very dynamic) Ca X line. - In the "right" window, which does not contain S III 1113.22, the comparable line S IV 1122.52 was used as a substitute to fill in the gaps.
These intervals (here shown averaged) around Fe XIX 1118 can be seen as animations by downloading the IDL/XDR restore file CONTROL_S179001_XDR.RST and the IDL programme CONTROL_S179001.PRO and starting it in the same subdirectory.
Time Solar X Solar Y Intensity Size Shift Width /UT /arcsec /arcsec /count s-1 /arcsec /km s-1 /km s-1 ----- ------- ------- ------------ ------- ------- ------- 01:47 -999 -283 0.986750 42 41 64 08:20 -999 -399 1.02115 29 52 66 08:20 -999 -369 0.351756 21 44 62 08:26 -999 -348 0.349493 39 29 60 11:04 -999 -266 0.414759 36 35 66 12:07 -999 -375 0.262258 18 21 52 12:24 -999 -326 0.429511 30 23 59 13:36 -999 -336 0.709704 40 39 65 13:38 -999 -307 0.645596 18 46 70 13:38 -999 -281 1.59230 86 38 85 18:30 -999 -270 0.460268 59 38 55 20:34 -999 -333 3.83168 46 38 78 20:46 -999 -376 0.579333 22 27 59 20:46 -999 -284 6.53613 50 64 87 22:59 -999 -266 1.75918 30 39 61 23:07 -999 -294 1.44996 28 27 70 23:16 -999 -325 1.05011 39 28 68 23:18 -999 -384 0.930046 46 26 67
goes-time in h after 25 Oct 2000, 00:00 UT sumer_time in h after 25 Oct 2000, 00:00 UT intens_goes GOES XS 0.5-4 in W / m2 intens_s3 in SUMER count / (line * 162.5 s * px) intens_ca10 intens_fe19 intens_cont Cont 1116 in count / (Å * 162.5 s * px) shift_s3 in km/s shift_ca10 shift_fe19 width_s3 in km/s width_ca10 width_fe19 1 px corresponds to 4.0" x (300/287)".