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Axially Symmetric Null Dust Space-Time, Naked Singularity, and Cosmic Time Machine
Author
Source
Advances in High Energy Physics
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-12
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
We present a gravitational collapse null dust solution of the Einstein field equations.
The space-time is regular everywhere except on the symmetry axis where it possesses a naked curvature singularity and admits one parameter isometry group, a generator of axial symmetry along the cylinder which has closed orbits.
The space-time admits closed timelike curves (CTCs) which develop at some particular moment in a causally well-behaved manner and may represent a Cosmic Time Machine.
The radial geodesics near the singularity and the gravitational lensing (GL) will be discussed.
The physical interpretation of this solution, based on the study of the equation of the geodesic deviation, will be presented.
It was demonstrated that this solution depends on the local gravitational field consisting of two components with amplitudes Ψ2 and Ψ4.
American Psychological Association (APA)
Ahmed, Faizuddin. 2017. Axially Symmetric Null Dust Space-Time, Naked Singularity, and Cosmic Time Machine. Advances in High Energy Physics،Vol. 2017, no. 2017, pp.1-7.
https://search.emarefa.net/detail/BIM-1122019
Modern Language Association (MLA)
Ahmed, Faizuddin. Axially Symmetric Null Dust Space-Time, Naked Singularity, and Cosmic Time Machine. Advances in High Energy Physics No. 2017 (2017), pp.1-7.
https://search.emarefa.net/detail/BIM-1122019
American Medical Association (AMA)
Ahmed, Faizuddin. Axially Symmetric Null Dust Space-Time, Naked Singularity, and Cosmic Time Machine. Advances in High Energy Physics. 2017. Vol. 2017, no. 2017, pp.1-7.
https://search.emarefa.net/detail/BIM-1122019
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122019