Počet záznamů: 1

Separation of solar radio bursts in a complex spectrum

  1. 1.
    0360457 - ASU-R 2012 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
    Mészárosová, Hana - Rybák, J. - Karlický, Marian - Jiřička, Karel
    Separation of solar radio bursts in a complex spectrum.
    Advances in Plasma Astrophysics. Cambridge: Cambridge University Press, 2011 - (Bonanno, A.), s. 150-152. IAU Symposium Proceedings Series, S274. ISBN 9780521197410. ISSN 1743-9213.
    [Symposium of the International Astronomical Union /274./. Giardini Naxos (IT), 06.09.2010-10.09.2010]
    Grant CEP: GA AV ČR(CZ) IAA300030701
    Výzkumný záměr: CEZ:AV0Z10030501
    Klíčová slova: Sun * flares * radio radiation
    Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

    Radio spectra, observed during solar flares, are usually very complex (many bursts and fine structures). We have developed a new method to separate them into individual bursts and analyze them separately. The method is used in the analysis of the 0.8–2.0 GHz radio spectrum of the April 11, 2001 event, which was rich in drifting pulsating structures (DPSs). Using this method we showed that the complex radio spectrum consists of at least four DPSs separated with respect to their different frequency drifts (-115, -36, -23, and -11 MHz/s). These DPSs indicate a presence of at least four plasmoids expected to be formed in a flaring current sheet. These plasmoids produce the radio emission on close frequencies giving thus a mixture of superimposed DPSs observed in the radio spectrum.
    Trvalý link: http://hdl.handle.net/11104/0198008