Angular momentum,magnetic moment,andg-factor in general relativity

The solutions to the Einstein-Maxwell equations for the case of a slowly rotating, massive thin shell with arbitrary charge are investigated. The form of the metric chosen here facilitates a more detailed analysis of the shell's angular momentum, magnetic moment, andg-factor than in earlier work. In addition to confirming earlier results, it is found that, for a charge-to-mass ratio greater than unity there is no upper or lower bound on the valueg may take and that the magnetic moment and net angular momentum of the shell may vanish or change sign (relative to the sense of rotation).