Published spectroscopic measurements of solar rotation are analyzed to show that when the rotation velocity increases at high latitudes it tends to decrease at low latitudes, and conversely. The high latitude velocities typically vary over only 20 % of the range of those near the equator and the sma
The equatorial photospheric rotation rate
β Scribed by Thomas L. Duvall
- Publisher
- Springer
- Year
- 1982
- Tongue
- English
- Weight
- 301 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0038-0938
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π SIMILAR VOLUMES
The equatorial rotation rate of the supergranulation cells has been observed to be 14.72 -4-0.07~ Velocity patterns observed at different times are cross-correlated to derive the rotation rate. The observed rate is 3% faster than recent observations of the surface rotation rate by Doppler shifts. T
We have used an atomic-beam resonance-scattering technique applied to the 7699,~ solar potassium absorption line to make an absolute spectroscopic determination of the solar equatorial rotation rate. To our knowledge this is a new method which has not previously been used for studying solar rotation
For selected pairs of Fraunhofer lines the height of formation has been calculated corresponding to that portion of the profile intercepted by the magnetograph exit slits. A photospheric height discrimination of 150-300 km is realized. In 1971 simultaneous measurements of equatorial angular velocity
The differential rotation of the large-scale photospheric magnetic field has been investigated with an autocorrelation technique using synoptic charts of the photospheric field during the interval 1959-66. Near the equator the rotation period of the field is nearly the same as the rotation rate of l