I. M. Chertok(1) and V. V. Grechnev(2)
(1) IZMIRAN, Troitsk, Moscow
Region, 142190 Russia
(2) Institute of Solar-Terrestrial Physics, P.O.\ Box 4026, Lermontov Street 126, Irkutsk 664033, Russia
SOHO/EIT 195 Å (original)
SOHO/EIT 195 Å running difference
SOHO/EIT 195 Å derotated difference to 09:24 UT
SOHO/EIT 195 Å derotated difference to 10:00 UT
Figure 1. SOHO/EIT derotated fixed-difference images of the 14 July 2000 event at 195 Å showing CME-associated dimmings (dark regions) and saturated flare brightening relative to the reference heliogram at 10:00 UT. The `snowstorm' from energetic particles is suppressed in frame (f).
Figure 2. CME- and flare-associated disturbances of the 14 July 2000 event as visible in the SOHO/EIT running-difference images at 195 Å. The `snowstorm' from energetic particles is suppressed in frame (d).
Figure 3. SOHO/EIT derotated 6-hour difference images of the 14 July 2000 event in four diverse-temperature lines 171, 195, 284, and 304 Å. For each line, the 13 UT heliogram is subjected to the suppression of the `snowstorm' produced by energetic particles, and only dimmings (i.e. structures of negative resulting intensity) are shown. Different appearance of the images is due to different exposure times.
Figure 4. Several 10x10 pixel dimming areas in the 195 Å derotated difference image between 10:48 and 09:24 UT (a) and corresponding light curves of the average intensity inside them (b).
Figure 5. A composite image to show the dimming structures at 195 Å over the whole event. The image is produced by taking for each pixel the minimum value over the whole set of the fixed-difference images.
See also the additional site http://helios.izmiran.troitsk.ru/lars/000714/index.html
PDF file of the paper "Large-Scale Activity in the Bastille Day 2000 Solar Event", by I.M. Chertok and V.V. Grechnev, Solar Physics, v. 228, issue 1, pp. 379-401, 2005 .
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