Multi-resolution Bayesian CMB component separation through Wiener filtering with a pseudo-inverse preconditioner

@article{Seljebotn2017MultiresolutionBC,
  title={Multi-resolution Bayesian CMB component separation through Wiener filtering with a pseudo-inverse preconditioner},
  author={Dag Sverre Seljebotn and Trygve Baerland and Hans Kristian Eriksen and K.-A. Mardal and Ingunn K. Wehus},
  journal={Astronomy and Astrophysics},
  year={2017},
  volume={627}
}
  • Dag Sverre Seljebotn, Trygve Baerland, +2 authors Ingunn K. Wehus
  • Published 2017
  • Physics
  • Astronomy and Astrophysics
  • We present a Bayesian model for multi-resolution CMB component separation based on Wiener filtering and/or computation of constrained realizations, extending a previously developed framework. We also develop an efficient solver for the corresponding linear system for the associated signal amplitudes. The core of this new solver is an efficient preconditioner based on the pseudo-inverse of the coefficient matrix of the linear system. In the full sky coverage case, the method gives a speed-up of… CONTINUE READING

    Figures from this paper.

    References

    Publications referenced by this paper.
    SHOWING 1-10 OF 30 REFERENCES