Dammasch, IE; Curdt, W; Kliem, B; Dwivedi, BN; Wilhelm, K; (2001) Spectroscopic signatures of a flare observed by SUMER onboard SOHO. In: Brekke, P and Fleck, B and Gurman, JB, (eds.) RECENT INSIGHTS INTO THE PHYSICS OF THE SUN AND HELIOSPHERE: HIGHLIGHTS FROM SOHO AND OTHER SPACE MISSIONS. (pp. 264 - 266). ASTRONOMICAL SOC PACIFIC
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We report on EUV observations of a solar limb flare obtained by the SUMER spectrometer. A time series was taken with fixed slit position and several spectral windows that covered a wide temperature range (10(4)-10(7) K), preceded and followed by contextual raster scan in a He I line. During the time series, a C4.6 flare occurred in the region, also imaged in the EUV by SOHO/EIT and in soft X rays by YOHKOH/SXT. The temporal evolution seen in the SUMER spectra reveals a close spatial relationship and a correlated dynamical behaviour of the hot (T approximate to 10(7) K) and cool (T approximate to 10(4) K) material, which are difficult to reconcile with the notion (based on the Kopp-Pneuman flare model) that cool loops form at a lower height than the hot flare loops.
|Title:||Spectroscopic signatures of a flare observed by SUMER onboard SOHO|
|Event:||24th General Assembly of the International-Astronomical-Union|
|Dates:||2000-08-07 - 2000-08-18|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Space and Climate Physics|
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