Three dimensional dynamo theory in the magnetosphere

We have solved in this paper the three dimensional dynamo equation consistent with the conditions in the magnetosphere. The conductivity we have adopted here is that for a fully ionised but highly rarefied gas in a magnetic field. The velocity field is based on the measurements of the convection patterns made by different satellites. The solution obtained of the dynamo equation is presented here in the most general form so that it can be used when the various parameters are known to a higher degree of accuracy in future. We have then made a model calculation based on the particular solution of the inhomogeneous differential equation and have computed the components of the current as well as the isointensity curves in the midday-midnight meridional plane. as well as on the dawn-dusk meridional plane. These theoretical results have then been matched with observations.The passing away on December 30, 1971 of Professor Sarabhai prevented his seeing this final write up.