Signature of cosmic string wakes in the CMB polarization

@article{Danos2010SignatureOC,
  title={Signature of cosmic string wakes in the CMB polarization},
  author={Rebecca J. Danos and Robert Brandenberger and Gilbert P. Holder},
  journal={Physical Review D},
  year={2010},
  volume={82},
  pages={023513}
}
We calculate a signature of cosmic strings in the polarization of the cosmic microwave background. We find that ionization in the wakes behind moving strings gives rise to extra polarization in a set of rectangular patches in the sky whose length distribution is scale-invariant. The length of an individual patch is set by the comoving Hubble radius at the time the string is perturbing the cosmic microwave background. The polarization signal is largest for string wakes produced at the earliest… 

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