Cylindrical Dust Collapse in General Relativity : Toward Higher Dimensional Collapse
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概要
- 論文の詳細を見る
Motivated by possible spindle naked singularity formation in prolate collapse, we invesitigate the dust collapse in cilindrically symmetric spacetime. First, possible singularity avoidance property of the maximal time slicing in cylindrically symmetric spacetime is investigated. It is found both analytically and numerically that the maximal time slicing never has that property and that the lapse function decreases only slowly and hits a singularity in cylindrically symmetric spacetime. We propose a new kind of time slice which may be suitable to investigate the formation of a cylindrical singularity. Second taking into account thise results, dust collapse is investigated numerically in order to see the role of gravitational waves during the gravitational collapse leading to a naked singularity. We find negligible gravitational wave emission during the free fall time. This is consistent with Shapiro-Terkolsky claim that neglibible gravitational waves are emitted in prolate collapse of collisionless particles. The implications of thise results for axisymmetric collapse, especially for prolate collapse, are also discussed.
- 理論物理学刊行会の論文
- 1996-02-25
著者
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Chiba Takeshi
Department Of Functional Molecular Chemistry Kobe Pharmaceutical University
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Chiba Takeshi
Department Of Physics Kyoto University
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CHIBA Takeshi
Department of Physics, Kyoto University
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