Performance test of QU-fitting in cosmic magnetism study

  title={Performance test of QU-fitting in cosmic magnetism study},
  author={Yoshimitsu Miyashita and Shinsuke Ideguchi and Shouta Nakagawa and Takuya Akahori and Keitaro Takahashi},
  journal={Monthly Notices of the Royal Astronomical Society},
QU-fitting is a standard model-fitting method to reconstruct distribution of magnetic fields and polarized intensity along a line of sight (LOS) from an observed polarization spectrum. In this paper, we examine the performance of QU-fitting by simulating observations of two polarized sources located along the same LOS, varying the widths of the sources and the gap between them in Faraday depth space, systematically. Markov Chain Monte Carlo (MCMC) approach is used to obtain the best-fit… 

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