ON THE OCCURRENCE OF ROTOSPHERES IN THE KERR FIELD

Discovered effectively two decades ago, the ''rotospheres'' (or also t he regions ''in a pre-horizon regime'') around collapsed relativistic sources have been analyzed thoroughly (and given their name) just late ly. So far only those specified by the unusual behaviour of accelerati on of the observer in azimuthal motion have been considered. Here I fi nd, in Kerr spacetimes, the rotospheres defined with respect to latitu dinal motion.