All Physics Faculty Publications

Document Type

Article

Journal/Book Title/Conference

Physical Review D

Volume

56

Issue

6

Publication Date

1997

First Page

3242

Last Page

3247

DOI

10.1103/PhysRevD.56.3242

Arxiv Identifier

arXiv:gr-qc/9704028v1

Abstract

Global topological defects produce nonzero stress energy throughout spacetime, and as a result can have observable gravitational influence on surrounding matter. Gravitational effects of global strings are used to place bounds on their cosmic abundance. The minimum separation between global strings is estimated by considering the defects' contribution to the cosmological energy density. More rigorous constraints on the abundance of global strings are constructed by examining the tidal forces such defects will have on observable astrophysical systems. The small number of observed tidally disrupted systems indicates there can be very few of these objects in the observable Universe.

Comments

Published by the American Physical Society in Physical Review D. Publisher PDF available through remote link.

Author e-print is deposited in arXiv.org.

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