Stationary spherical shells around Kerr-Newman naked singularities.

Details Stationary spherical shells around Kerr-Newman naked singularities. Stationary spherical shells around Kerr-Newman naked singularities.

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998acpsl..48..549s&link_type=abstract

Acta Phys. Slovaca, Vol. 48, No. 5, p. 549 - 562

Physics

5

Black Holes

Scientific paper

It is shown that in the field of some Kerr-Newman naked singularities a stationary spherical shell of charged dust can exist, with the specific charge being the same for all particles of the dusty shell. Gravitational attractions acting on the particles are balanced by electromagnetic repulsions in such a way that the shell is stable against radial perturbations. Particles of the shell move along orbits with constant latitude and radius. Rotation of the shell is differential. The shell is corotating relative to static observers at infinity, but it is counterrotating relative to the family of locally nonrotating observers. No such a shell can exist in the field of Kerr-Newman black holes.

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