LAMBERTI Pedro Walter
A family of counterrotating disks as source of the Kerr metric
V.H. HAMITY; P.W. LAMBERTI
GENERAL RELATIVITY AND GRAVITATION
Lugar: New York; Año: 1987 vol. 19 p. 917 - 925
A method of constructing a family of regular rotating disks as sources of the Kerr metric is discussed. The algebraic type of the energy-momentum tensor is analyzed, and it is found that none of the disks satisfies the dominant energy condition and, in some cases, even the weak energy condition is violated. Therefore, if the constructed family includes the totality of sources for the Kerr metric with a disk-like topology, then any physically satisfactory source will not have a disk structure.