HeI dark points and 11-year solar cycle
β Scribed by L. D. Parfinenko
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 313 KB
- Volume
- 132
- Category
- Article
- ISSN
- 0038-0938
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π SIMILAR VOLUMES
With 3 figures. (Received 196G October IS) I t is shown from measurements of type I11 bursts a t 234 MHz, I I I MHz and 23 MHz during the foregoing solar cycle that the type I11 activity has a relative minimum in 1959 and apparently a second maximum in 1960. This is in accordance with the statement
Each 11-years cycle of solar activity consists of two processes with different physical properties. The variety of shapes of the 11-years curves depends on the way these processes overlap. All events in the photosphere, chromosphere and corona, and all kinds of emissions like the radio-and corpuscu
We have made number counts of the bright points that populate the interior of the Ca II network in the solar chromosphere for four solar cycles. We find that the number of these fine structures during the solar maximum exceeds that during the minimum phase on an average by 30%. The contribution due