CMB Distortions from Superconducting Cosmic Strings
Cosmology and Nongalactic Astrophysics
2012-12-18 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We reconsider the effect of electromagnetic radiation from superconducting strings on cosmic microwave background (CMB) mu- and y-distortions and derive present (COBE-FIRAS) and future (PIXIE) constraints on the string tension, mu_s, and electric current, I. We show that absence of distortions of the CMB in PIXIE will impose strong constraints on mu_s and I, leaving the possibility of light strings (G mu_s < 10^{-18}) or relatively weak currents (I < 10 TeV).
Cite
@article{arxiv.1202.2474,
title = {CMB Distortions from Superconducting Cosmic Strings},
author = {Hiroyuki Tashiro and Eray Sabancilar and Tanmay Vachaspati},
journal= {arXiv preprint arXiv:1202.2474},
year = {2012}
}
Comments
10pages, 5 figures, Submitted to PRD, v2:References added, replaced to match the PRD version