Type IV event of January 15, 1974 - Polarimetric and interferometric observations respectively at 239 MHz and 408 MHz
Abstract
Results are reported for polarimetric observations at 239 MHz and interferometric observations at 408 MHz of a solar type IV event that was associated with a type 1N flare which began near the west limb. The polarimetric data show that the event began as an unpolarized type II burst and that the entire type IV event was characterized by an almost total lack of polarization. The 408-MHz data indicated the presence of oscillations and also that the event was a type IV decimetric burst. It is shown that the radio source was located 1.08 solar radii from the optical center of the sun and had an E-W diameter of less than 0.25 solar radius.
- Publication:
-
Workshop on the Preliminary Results from the S-054 X-ray Telescope and the Correlated Ground-Based Observations
- Pub Date:
- 1975
- Bibcode:
- 1975xtcg.work..139Z
- Keywords:
-
- Interferometry;
- Polarimetry;
- Radio Spectra;
- Solar Flares;
- Type 4 Bursts;
- Polarization Characteristics;
- Radio Observation;
- Skylab Program;
- Solar Activity Effects;
- Spectroheliographs;
- Ultrahigh Frequencies;
- Very High Frequencies;
- Solar Physics