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Gravitational Lensing by Cosmic Strings in the Era of Wide-Field Surveys

Dragan Huterer·Tanmay Vachaspati
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Abstract

Motivated by the recent claim for gravitational lensing by a cosmic string, we reinvestigate the probability of finding such an event with upcoming wide-field surveys. If an observed lensing event is suspected to be due to a string, observations of the vicinity of the event in a circle of diameter L centered on the observed lens should reveal several additional lensing events. For a string located nearby (z\lesssim 0.5), we find that observations in a region of size \approx 1 arcmin^2 will see \sim 100 objects, of which \sim 5 would be lensed by the string, compared to \sim 0.1 lensed by conventional sources.

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Dragan Huterer, Tanmay Vachaspati. 2003-05-01. Gravitational Lensing by Cosmic Strings in the Era of Wide-Field Surveys. https://doi.org/10.1103/physrevd.68.041301

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