Abstract:
Solar rotation continues to be observed by several techniques. We have tried to study coronal rotation using radio observations. Coronal rotation and its variation with height in solar atmosphere are studied. For this, we have used 11 different frequencies of radio emissions. We have also tried to look at dependence of rotation period on phase of solar cycle. The period of analysis is four solar cycles (cycle 19 to 22). The results of analysis do not show systematic relationship between coronal rotation period and phase of isolar cycle