Millisecond microwave spikes in a solar flare
Abstract
THE shortest-lived structures in microwave solar flares known until now last ~1 s. Recently (11 April 1978) we observed a microwave outburst at 2.65 GHz (starting at 13.41 UT) showing a strong and extremely fast fluctuating burst component. Many spikes appeared to have half-power durations smaller than the 20-ms resolution of the instrument used. These are about two orders of magnitude shorter-lived than events reported from previous microwave observations. They are only rivalled by fine structure in some decimetric type IV bursts between 0.4 and 1.4GHz (ref. 1).
- Publication:
-
Nature
- Pub Date:
- October 1978
- DOI:
- 10.1038/275520a0
- Bibcode:
- 1978Natur.275..520S
- Keywords:
-
- Decimeter Waves;
- Microwave Emission;
- Solar Flares;
- Solar Radio Bursts;
- Brightness Temperature;
- Circular Polarization;
- Solar Flux Density;
- Solar Physics