Gravitational Lensing Signature of Long Cosmic Strings

Details Gravitational Lensing Signature of Long Cosmic Strings Gravitational Lensing Signature of Long Cosmic Strings

1997-02-03

arxiv.org/abs/astro-ph/9702033v1

Phys.Rev.Lett. 79 (1997) 1968-1971

Astronomy and Astrophysics

Astrophysics

4 pages, revtex with 3 postscript figures included

Scientific paper

10.1103/PhysRevLett.79.1968

The gravitational lensing by long, wiggly cosmic strings is shown to produce a large number of lensed images of a background source. In addition to pairs of images on either side of the string, a number of small images outline the string due to small-scale structure on the string. This image pattern could provide a highly distinctive signature of cosmic strings. Since the optical depth for multiple imaging of distant quasar sources by long strings may be comparable to that by galaxies, these image patterns should be clearly observable in the next generation of redshift surveys such as the Sloan Digital Sky Survey.

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