Analysis and Interpretation of the Quasiperiodical Structure of a Type IV Burst
Abstract
This paper deals with the analysis of the type IV radio burst (with a quasiperiodical structure), observed in the 270 to 470 MHz frequency range with the radio spectrograph of the Ondrejov Observatory on July 3, 1974. The burst probably originated in the complicated magnetic structure of active region McMath 13043 following a proton flare. The method of spectral analysis and signal filtering was used to process the event. The results were discussed from the point of view of statistical likelihood. The observed periods of intensity modulation of the burst are interpreted in the considered model as the periods of generation and acceleration of electron beams in an X-type magnetic configuration, as periods in electron beam injections into the coronal plasma taking into account the finite velocities of propagation of electromagnetic radiations.
- Publication:
-
Bulletin of the Astronomical Institutes of Czechoslovakia
- Pub Date:
- 1979
- Bibcode:
- 1979BAICz..30..257P
- Keywords:
-
- Radio Spectra;
- Signal Analysis;
- Solar Spectra;
- Type 4 Bursts;
- Solar Magnetic Field;
- Solar Protons;
- Stellar Structure;
- Solar Physics