RM-synthesis of the Perseus cluster

Details RM-synthesis of the Perseus cluster RM-synthesis of the Perseus cluster

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..545b&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 5/6, p.545

Astronomy and Astrophysics

Astronomy

3

Galaxies: Clusters: General, Galaxies: Active, Polarization, Magnetic Fields, Techniques: Image Processing, Radio Continuum: General

Scientific paper

We present low frequency radio polarimetric observations of the Perseus cluster. The data were taken with the Westerbork Synthesis Radio Telescope (WSRT) between 315-360 MHz. We have discovered faint, extended, highly polarized emission that we associate with the Perseus cluster \citep{DeBruynBrentjens2005}. We propose that at least one of these structures is associated with large-scale structure formation gas inflow from the Perseus-Pisces supercluster. The extragalactic emission is seen through a polarized Galactic synchrotron foreground screen. The discovery was made possible by a novel rotation measure analysis technique, called Faraday Rotation Measure Synthesis, or RM-synthesis for short \citep{BrentjensDeBruyn2005}.

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