Spatial variation of the fine-structure parameter and the cosmic microwave background

@inproceedings{Sigurdson2003SpatialVO,
  title={Spatial variation of the fine-structure parameter and the cosmic microwave background},
  author={Kris Sigurdson and Andriy Kurylov and Marc Kamionkowski},
  year={2003}
}
We study the effects on cosmic microwave background ~CMB! temperature and polarization anisotropies of spatial fluctuations of the fine-structure parameter between causally disconnected regions of the Universe at the time of recombination. Analogous to weak gravitational lensing, in addition to modifying the mean power spectra and inducing a curl component ( B mode! to the polarization, spatial fluctuations of the fine-structure parameter induce higher-order ~non-Gaussian ! temperature and… CONTINUE READING

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