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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Contributors:
    Cauzzi, G. (author) / Falchi, A. (author) / Falciani, R. (author) / Smaldone, L.A. (author)

    Published in:

    Advances in Space Research ; 13 , 9 ; 311-315


    Publication date :

    1993-01-01


    Size :

    5 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Further Observations of the March 1991 Solar Flare Event

    Sanderson, T.R. / Marsden, R.G. / Wenzel, K-P. | Elsevier | 1993


    Yohkoh HXT Observations of a Solar Flare on 16 December, 1991

    Inda-Koide, M. / Makishima, K. / Kosugi, T. et al. | British Library Conference Proceedings | 1994


    High time resolution observations of the solar flare Hα emission

    Radziszewski, K. / Rudawy, P. / Phillips, K.J.H. et al. | Elsevier | 2005



    High time resolution observations of the solar flare Hα emission

    Radziszewski, K. / Rudawy, P. / Phillips, K. J. et al. | British Library Conference Proceedings | 2006