Fiber bursts in type IV dm radio continua as a signature of coronal current sheet dynamics
✍ Scribed by H. Aurass; B. Kliem
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 497 KB
- Volume
- 141
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
✦ Synopsis
In the late phase of some complex flare events which produce type IV radio emission, a narrow-band decimetric component with generally a high abundance of spectral fine structures is observed. We identify this late dm continuum as a hypothetical 'switch-off" signature of the equivalent two-ribbon flare current system. The quasi-periodic and highly dynamic fiber-burst pattern studied in the February 5, 1986 example is understood as radio evidence for a final reactivation of a cyclic sequence of instabilities in the driven reconnecting current sheet below the rising prominence.
* Paper presented at the 4th CESRA Workshop in Ouranopolis (Greece) 1991.