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Cosmic string loop microlensing
2014
Physical Review D
Cosmic superstring loops within the galaxy microlens background point sources lying close to the observer-string line of sight. For suitable alignments, multiple paths coexist and the (achromatic) flux enhancement is a factor of two. We explore this unique type of lensing by numerically solving for geodesics that extend from source to observer as they pass near an oscillating string. We characterize the duration of the flux doubling and the scale of the image splitting. We probe and confirm the
doi:10.1103/physrevd.89.124003
fatcat:vd3peeckwvehfhocgplbk2fnnu