High temporal and spatial resolution observations of a solar flare on June 7, 1991

Details High temporal and spatial resolution observations of a solar flare on June 7, 1991 High temporal and spatial resolution observations of a solar flare on June 7, 1991

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..311c&link_type=abstract

Advances in Space Research, Volume 13, Issue 9, p. 311-315.

Computer Science

1

Scientific paper

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.

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