Interplanetary Gas. VII. a Semiempirical Model.

A theoretical expression is obtained connecting parameters in the solar wind near the orbit of earth with parameters in the inner corona. A model similar to the empirical model presented recently (Brandt 1962) is found to be reasonably consistent with the theoretical expression. Near the orbit of earth, an expansion velocity of km/sec and a mean electron density of 1-5/cm3 are thought to be probable.