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On null isotropy in spacetimes |
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| Authors: | |
| Institution: | (1) Department of Mathematics, Hacettepe University, 06532-Beytepe, Ankara, Turkey |
| Abstract: | Null isotropy in a spacetime is defined. The relation of null isotropy to the constant curvature and infinitesimal spatial isotropy is investigated. The influence of null isotropy on conjugate points along null geodesics and curvature singularities is investigated. |
| Keywords: | Spacetime Instantaneous observer Stress-energy tensor Perfect fluid Einstein equation Jacobi operator Weyl operator Null isotropic Infinitesimally spatially isotropic |
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