CMB distortions from superconducting cosmic strings
Hiroyuki Tashiro, Eray Sabancilar, Tanmay Vachaspati
DOI 10.1103/PhysRevD.85.103522 · Physical Review D
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Abstract
We reconsider the effect of electromagnetic radiation from superconducting strings on cosmic microwave background μ and y distortions and derive present (COBE-FIRAS) and future (PIXIE) constraints on the string tension, μs, and electric current, I. We show that absence of distortions of the cosmic microwave background in PIXIE will impose strong constraints on μs and I, leaving the possibility of light strings (Gμs≲10−18) or relatively weak currents (I≲10 TeV).
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