SINGULARITIES AT REAL POINTS OF H-SPACE

Journal article

In the presence of gravitational radiation, there are ordinarily no shear-free slices of null infinity. A four-complex-dimensional set of shear-free slices of complexified null infinity do exist. They comprise the manifold ℋ space. In general, there are no preferred real subspaces of ℋ space associated with slices of real null infinity. However, for radiation fields possessing a twist-free axial symmetry, a two-parameter family of shear-free slices of real null infinity exist and therefore pick out a preferred two-dimensional real subspace of ℋ space. In this paper, we study the geometry of these 2-spaces for the particular case of quadrupole radiation fields for which determination of the shear-free slices reduces to the standard problem of determining orbits of a particle moving in a potential. Our principal interest is the investigation of possible singularities caused by sufficiently intense radiation fields. We find that such singularities do occur for radiation fields having the characteristic power c5/G. © 1980 Plenum Publishing Corporation.

Authors: Tod, K; Winicour, J

• Publication status: Published
• Publisher: Kluwer Academic Publishers-Plenum Publishers
• Journal: GENERAL RELATIVITY AND GRAVITATION
• Volume: 12
• Issue: 2
• Pages: 99-108
• Publication date: 1980-01-01
• DOI: 10.1007/BF00756466
• EISSN: 1572-9532
• ISSN: 0001-7701
• Language: English