Electromagnetic radiation from superconducting cosmic string loops can reionize neutral hydrogen in the Universe at very early epochs, and affect the cosmic microwave background temperature and polarization correlation functions at large angular scales. We constrain the string tension and current using WMAP7 data, and compare with earlier constraints that employed cosmic microwave background spectral distortions. Over a wide range of string tensions, the current on the string has to be less than ∼107GeV.
|Original language||English (US)|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - Jun 21 2012|
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)