Abstract
Simultaneous observations of the photospheric rotation velocity and magnetic field are made with 5'' spatial resolution. The results show a significant increase in plasma rotation velocity with absolute magnetic intensity. The difference in rotation velocity between the highest and lowest magnetic fields, in areas of quiet photosphere, is 41 +- 6 m s/sup -1/ in 1975 and 46 +- 11 m s/sup -1/ in 1974, measured in the lambda5250 line of Fe i. A less significant increase is found in the lambda5233 line. These results indicate that the magnetic network rotates at least 2 percent faster than the general photosphere, and the flux tubes accelerate the local plasma of the network boundaries. (AIP)
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