MEM imaging of multi-wavelength VLBA polarisation observations of Active Galactic Nuclei
Astrophysics of Galaxies
2013-07-26 v1 Cosmology and Nongalactic Astrophysics
High Energy Astrophysical Phenomena
Abstract
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.
Keywords
Cite
@article{arxiv.1307.6757,
title = {MEM imaging of multi-wavelength VLBA polarisation observations of Active Galactic Nuclei},
author = {Colm P. Coughlan and Denise C. Gabzuda},
journal= {arXiv preprint arXiv:1307.6757},
year = {2013}
}
Comments
From the proceedings of the 11th European VLBI Network Symposium and Users Meeting, Bordeaux, 9-12 October 2012, 6 pages, 3 figures