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Cosmic magnetic fields in clusters of galaxies and their analysis

Published online by Cambridge University Press:  01 November 2008

Joern Geisbuesch  and
Paul Alexander
Joern Geisbuesch
Affiliation:
Astrophysics Group, University of Cambridge, Cambridge, CB3 0HE, UK email: joern@mrao.cam.ac.uk
Paul Alexander
Affiliation:
Astrophysics Group, University of Cambridge, Cambridge, CB3 0HE, UK email: joern@mrao.cam.ac.uk
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Abstract

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We discuss how measurements of linear polarisation of cluster background and embedded sources can be used to study cluster magnetic fields via Faraday rotation. We make forecasts for up-coming radio instruments on the basis of synthetic radio sky observations. Our mock polarised sky is modelled to agree with the sparse available data. By applying Bayesian statistical analysis methods, such as Markov Chain Monte Carlo and nested sampling techniques, we investigate which constraints can be placed on cluster magnetic field properties.

Keywords

Galaxies: clusters: general – galaxies: magnetic fields – magnetic fields – radio continuum: galaxies – polarization – methods: data analysis
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 571 - 572
Copyright
Copyright © International Astronomical Union 2009

References

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