Energy loss of supermassive magnetic monopoles and dyons in main sequence stars

We estimate the energy loss rate for a supermassive magnetic monopole or dyon in the interior of a main sequence star. For this purpose, the medium is shown to behave as a nondegenerate classical electron gas, the nuclear contribution to the stopping power being negligible. A linear dependence of the energy loss from the velocity of the particle is obtained. This result would provide a basic input to detailed calculations of the dynamics of monopoles and dyons in our galaxy. copyright 1997 The American Physical Society