Solar wind stream structure during the early phase of solar cycles 20 and 21
β Scribed by J. T. Nolte; J. M. Davis; J. D. Sullivan
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 223 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Short-term periodicities of solar activity were studied with the flare index by using Discrete Fourier Transform for the time interval 1966-1986. Two noticeable periodicities (18.5 and 5 months) have been found. The existence of these periodicities comparing with the early findings is discussed.
The record of flare incidence from January 1969 to October 1988 indicates that the north-south (N-S) distribution of large flares is periodic and approximately in phase with the 11-year sunspot cycle. These data are based on observations of the whole-disk Sun in continuum soft X-rays which commenced