Sunspot drawings obtained at National Astronomical Observatory of Japan during the years 1954-1986 were used to determine the differential rotation of the Sun. From the limited data set of three solar cycles it was found that three factors (the level of cycle activity, the cycle phase, and sunspot t
The solar differential rotation from the eightteenth solar cycle
β Scribed by Peter Rovithis
- Publisher
- Springer Netherlands
- Year
- 1982
- Tongue
- English
- Weight
- 320 KB
- Volume
- 88
- Category
- Article
- ISSN
- 0004-640X
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The rotation of the solar corona has been studied using recurrence properties of the green coronal line (5303 A,) for the interval 1947-1970. Short-lived coronal activity is found to show the same differential rotation as short-lived photospheric magnetic field features. Long-lived recurrences show
Radiospectroheliograms obtained at millimeter wavelengths were used to determine the rotation of the solar atmosphere. Regions observed in both emission as well as absorption (associated with Ha dark filaments) were followed across the disk. The average sidereal rotation rate deduced from emissive r