Abstract We present some preliminary results on a small flare observed at the NSO-Sacramento Peak with very good spatial resolution (.6″–.7″). The flare occurred on June, 7 1991 at ∼ 13:43 UT in the NOAA region 6659 and has been observed by the COMPTON BATSE experiment in the 25–50 KeV range. A very complex velocity pattern is found for chromospheric and metallic lines: a small region (5″ wide) presents a strong blue-shifts in all these lines, lasting through the flare, while, only in the Ca II-K and Hδ lines, we find a zone (again ∼ 5″ wide) of strong red asymmetries contemporary to the hard X-rays spikes. These observations show the importance of having high spatial and temporal resolution measurements in the study of flares.
High temporal and spatial resolution observations of a solar flare on June 7, 1991
Advances in Space Research ; 13 , 9 ; 311-315
1993-01-01
5 pages
Article (Journal)
Electronic Resource
English
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