Corpus ID: 116321253

Detecting magnetic CMB polarization on an incomplete sky

  title={Detecting magnetic CMB polarization on an incomplete sky},
  author={A. Lewis and A. Challinor and N. Turok},
  • A. Lewis, A. Challinor, N. Turok
  • Published 2001
  • Physics
  • The full sky cosmic microwave background polarization field can be decomposed into `electric' and `magnetic' components. Working in harmonic space we construct magnetic variables that can be measured from observations over only a portion of the sky. Our construction is exact for azimuthally symmetric patches, but should continue to perform well for arbitrary patches. For isotropic, uncorrelated noise the variables have a very simple diagonal noise correlation, and further analysis using them… CONTINUE READING