Rotation of galaxies as a signature of cosmic strings in weak lensing surveys

Abstract

Vector perturbations sourced by topological defects can generate rotations in the lensing of background galaxies. This is a potential smoking gun for the existence of defects since rotation generates a curl-like component in the weak lensing signal which is not generated by standard density perturbations at linear order. This rotation signal is calculated as generated by cosmic strings. Future large scale weak lensing surveys should be able to detect this signal even for string tensions an order of magnitude lower than current constraints.

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Cited by in corpus (20)

• Cosmic Strings and Superstrings
• Seeking String Theory in the Cosmos
• Computing General Relativistic effects from Newtonian N-body simulations: Frame dragging in the post-Friedmann approach
• Probing Cosmic Superstrings with Gravitational Waves
• Parity violating Friedmann Universes
• String Vertex Operators and Cosmic Strings
• Weak lensing generated by vector perturbations and detectability of cosmic strings
• Dynamical behavior of the $C$-metric: charged scalar fields, quasinormal modes and superradiance
• Estimating the weak-lensing rotation signal in radio cosmic shear surveys
• Cosmic stringlike objects in hybrid metric-Palatini gravity
• Constraining cosmic string parameters with curl mode of CMB lensing
• Cosmic strings in generalized hybrid metric-Palatini gravity
• Thermodynamics of Cosmic Defect Network Evolution
• Ringdown Spectroscopy of Rotating Black Holes Pierced by Cosmic Strings
• Mapping weak lensing distortions in the Kerr metric
• Towards an Observational Appraisal of String Cosmology
• Induced rotation from de Sitter-Godel-de Sitter phase transition
• Covariant Vertex Operators for Cosmic Strings
• On the Quantization of Burgers Vector and Gravitational Energy in the Space-Time of a Conical Defect
• Radio Jets and Galaxies as Cosmic String Probes