Separating E from B

  title={Separating E from B},
  author={Emory F. Bunn},
  journal={New Astronomy Reviews},
  • E. Bunn
  • Published 30 May 2003
  • Physics
  • New Astronomy Reviews
In a microwave background polarization map that covers only part of the sky, it is impossible to separate the E and B components perfectly. This difficulty in general makes it more difficult to detect theB component in a data set. Any polarization map can be separated in a unique way into “pure E,” “pure B,” and “ambiguous” components. Power that resides in the pure E (B) component is guaranteed to be produced by E (B) modes, but there is no way to tell whether the ambiguous component comes… Expand

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