CMB Distortions from Superconducting Cosmic Strings

Details CMB Distortions from Superconducting Cosmic Strings CMB Distortions from Superconducting Cosmic Strings

2012-02-11

arxiv.org/abs/1202.2474v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

10pages, 5 figures, Submitted to PRD

Scientific paper

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).

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