Variation of the solar atmospheric rotation over the 11 year cycle
โ Scribed by Mohamed El-Raey; R. Amer
- Publisher
- Springer
- Year
- 1975
- Tongue
- English
- Weight
- 372 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0038-0938
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โฆ Synopsis
The synodic rotation period and power spectra of solar microwave sources are investigated using acctlrate data in the interval 1956 to 1970. The variation of the approximate 27 day period is obtained over a complete solar cycle and is thought to be a result of the latitude change over the solar cycle of the origins of the radio emissions. High resolution power spectra have also been obtained and revealed the existence of a double peaked line near 160 day period. This line is attributed to changes in either the Eartn's heliographic latitudes or the Earth's inclination to the Earth-Sun line.
๐ SIMILAR VOLUMES
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
Systematic measurements of the differential Doppler velocity of the Sun have been performed in Crimea from 1974 through 1988 (total 987 days, 6197 hours of observations). They confirm the presence of a long-term phase-coherent solar pulsation with a period of 160.010 min. On the other hand, the anal