Abstract Post-flare loops are generally observed between two ribbon flares. The formation of post flare loops and active region or plage filaments has been explained in a model based on magnetic reconnection and chromospheric ablation /1,2/. This model uses a magnetic topology which is relevant to solar flares /3/ : a large flare or an instability opens the magnetic lines of a coronal arcade (or arch) and a vertical current sheet forms. Then the reconnection of the magnetic field follows according to the scenario of Kopp and Pneuman /4/. In this magnetic configuration, we show that the formation of condensations or dense loops is induced by reconnection shocks. We give in this communication a new method of diagnostic to derive from Hα profiles physical parameters, i.e. source function, optical depth and velocity. This method called “differential cloud method” is very promising for future observations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Post-flare loops: formation and velocity


    Contributors:
    Schmieder, B. (author) / Mein, P. (author) / Malherbe, J.-M. (author) / Forbes, T.G. (author)

    Published in:

    Advances in Space Research ; 8 , 11 ; 145-148


    Publication date :

    1989-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    VELOCITY FLUCTUATIONS IN CORONAL LOOPS AS FLARE DRIVERS

    Nigro, G. / Malara, F. / Veltri, P. et al. | British Library Conference Proceedings | 2005


    A dynamic flare with anomalously dense flare loops

    Svestka, Z. / Fontenla, J. M. / Machado, M. E. et al. | NTRS | 1986


    On the Bernstein modes generation in solar post-flare loops

    Kryshtal, A. N. | British Library Online Contents | 1992


    Footpoint Structures of Flare Loops

    Sylwester, J. / Sylwester, B. | British Library Online Contents | 1997


    Post Flare Loops Production Due to Reconnection in the Current Sheet

    Podgorny, A. I. / Podgorny, I. M. / Minami, S. et al. | British Library Conference Proceedings | 2000