Constraints on superconducting cosmic strings from early reionization

Hiroyuki Tashiro, Eray Sabancilar, Tanmay Vachaspati

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

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 languageEnglish (US)
Article number123535
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume85
Issue number12
DOIs
StatePublished - Jun 21 2012

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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