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MEM imaging of multi-wavelength VLBA polarisation observations of Active Galactic Nuclei

We have developed a C++ implementation of the Maximum Entropy Method (MEM) suitable for deconvolving VLBI polarisation data. The first results of this implementation are presented and compared with CLEAN-based deconvolutions of the same data. We present Faraday rotation measure and intrinsic polarisation maps of AGN which have been made from MEM deconvolutions of multi-wavelength observations of Stokes parameters I, Q and U. The advantages of using MEM are demonstrated, in particular its enhanced resolution over the CLEAN algorithm.

preprint2013arXivOpen access
Colm P. CoughlanDenise C. Gabzuda
astro-ph.COastro-ph.GAastro-ph.HE
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Colm P. CoughlanDenise C. Gabzuda

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