Angular 21 cm Power Spectrum of a Scaling Distribution of Cosmic String Wakes

TL;DR

This paper predicts the angular power spectrum of 21 cm radiation caused by cosmic string wakes with shock heating, providing insights into early universe structures before reionization.

Contribution

It introduces a calculation of the 21 cm power spectrum from a scaling distribution of cosmic string wakes with shock heating effects.

Findings

Predicted a distinctive angular power spectrum signature.

Identified the impact of shock heating on 21 cm signals.

Provided a framework for future observational tests.

Abstract

Cosmic string wakes lead to a large signal in 21 cm redshift maps at redshifts larger than that corresponding to reionization. Here, we compute the angular power spectrum of 21 cm radiation as predicted by a scaling distribution of cosmic strings whose wakes have undergone shock heating.