Fast quadratic power spectrum estimators and the E-B decomposition

Anthony Challinor, Gayoung Chon, Eric Hivon, Simon Prunet, István Szapudi

Research output: Contribution to journalShort survey

3 Citations (Scopus)


We describe a fast, quadratic power spectrum estimator for cosmic microwave background polarization fields, based on heuristically-weighted correlation functions. The method can handle real-world effects such as inhomogeneous or correlated noise, and arbitrary sky cuts. A significant feature is that the electric and magnetic polarization powers are separated exactly in the mean, even for observations covering only a small region of the sky, and with a negligible increase in computational cost. The method is illustrated with simulations for a large-area survey, and a future, deep magnetic-polarization survey.

Original languageEnglish
Pages (from-to)995-1000
Number of pages6
JournalNew Astronomy Reviews
Issue number11-12
Publication statusPublished - Dec 2003

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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