Spin-based removal of instrumental systematics in 21cm intensity mapping surveys

  title={Spin-based removal of instrumental systematics in 21cm intensity mapping surveys},
  author={Nialh McCallum and Daniel B. Thomas and Philip Bull and Michael L. Brown},
  journal={Monthly Notices of the Royal Astronomical Society},
Upcoming cosmological intensity mapping surveys will open new windows on the Universe, but they must first overcome a number of significant systematic effects, including polarization leakage. We present a formalism that uses scan strategy information to model the effect of different instrumental systematics on the recovered cosmological intensity signal for ‘single-dish’ (autocorrelation) surveys. This modelling classifies different systematics according to their spin symmetry, making it… 



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