A Circular Statistical Method for Extracting Rotation Measures

Details A Circular Statistical Method for Extracting Rotation Measures A Circular Statistical Method for Extracting Rotation Measures

2000-07-18

arxiv.org/abs/astro-ph/0007251v1

Mon.Not.Roy.Astron.Soc. 328 (2001) 623

Astronomy and Astrophysics

Astrophysics

17 pages, 5 figures

Scientific paper

10.1046/j.1365-8711.2001.04932.x

We propose a new method for the extraction of Rotation Measure from spectral polarization data. The method is based on maximum likelihood analysis and takes into account the circular nature of the polarization data. The method is unbiased and statistically more efficient than the standard $\chi^2$ procedure. We also find that the method is computationally much faster than the standard $\chi^2$ procedure if the number of data points are very large.

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