Astronomy and Astrophysics – Astronomy
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981soph...71...65g&link_type=abstract
Solar Physics, vol. 71, May 1981, p. 65-75.
Astronomy and Astrophysics
Astronomy
7
Decametric Waves, Radio Sources (Astronomy), Radio Spectra, Solar Flares, Solar Radio Bursts, Coronal Loops, High Energy Electrons, Position (Location), Shock Waves, Solar Corona, Solar Electrons, Type 2 Bursts, Type 3 Bursts
Scientific paper
The spectra and positions of the meter-decameter wavelength radio sources associated with the flare of September 5, 1973 are discussed. The evolution of the size of the type II burst source is discussed and it is shown that it fluctuates by a factor of 10, or larger. Consequently, the potential and kinetic energies associated with the shock are uncertain by the same factor. By a comparison of the positions of the type II and type III sources, it is concluded that while the shock wave associated with the type II was guided along high loops, the type III electrons were injected along open field lines which diverged within a short height in the corona. The characteristics of a particularly interesting type III burst with a low-frequency cut-off are discussed. It is argued that nearby loops were not disrupted by the shock and that the energetic electrons produced during the event must have been injected at several sites and guided along open field lines at large distances from the flare to produce type III bursts.
Gergely Tomas E.
Kundu Mukul R.
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