Searching for Signatures of Cosmic String Wakes in 21cm Redshift Surveys using Minkowski Functionals

Abstract

Minkowski Functionals are a powerful tool for analyzing large scale structure, in particular if the distribution of matter is highly non-Gaussian, as it is in models in which cosmic strings contribute to structure formation. Here we apply Minkowski functionals to 21cm maps which arise if structure is seeded by a scaling distribution of cosmic strings embeddded in background fluctuations, and then test for the statistical significance of the cosmic string signals using the Fisher combined probability test. We find that this method allows for detection of cosmic strings with $G\mu >5\times 10^{-8}$, which would be improvement over current limits by a factor of about 3.

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Cited by in corpus (15)

• Searching for Cosmic Strings in New Observational Windows
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• Weakly non-Gaussian formula for the Minkowski functionals in general dimensions
• Cosmic Strings as Emitters of Extremely High Energy Neutrinos
• Disruption of Cosmic String Wakes by Gaussian Fluctuations
• Physics Beyond The Standard Model with Circular Polarization in the CMB and CMB-21cm Cross-Correlation
• Neutrino currents in wakes of cosmic strings
• Note on Structure Formation from Cosmic String Wakes
• Probing Particle Physics from Top Down with Cosmic Strings
• High-redshift test of gravity using enhanced growth of small structures probed by the neutral hydrogen distribution
• On improving analytical models of cosmic reionization for matching numerical simulation
• Diffusion of massive particles around an Abelian-Higgs string
• Magnetic reconnection in the wakes of cosmic strings
• High redshift signatures in the 21 cm forest due to cosmic string wakes
• Cosmic Strings-induced CMB anisotropies in light of Weighted Morphology