CMB Anisotropies by Collapsing Textures

TL;DR

This paper models how collapsing cosmic textures create distinctive temperature anisotropies in the CMB, providing a detailed numerical calculation of their patterns on the sky.

Contribution

It introduces a numerical method to compute CMB anisotropies caused by collapsing textures of arbitrary shapes, advancing understanding of their observational signatures.

Findings

Characteristic cold and hot spots are produced by collapsing textures.

Numerical solutions for texture dynamics on Minkowski background are provided.

The anisotropy patterns depend on the shape and evolution of the textures.

Abstract

CMB photons passing through a collapsing texture knot receive an energy shift, creating characteristic cold and hot spots on the sky. We calculate the anisotropy pattern produced by collapsing texture knots of arbitrary shape. The texture dynamics are solved numerically on a Minkowski background.