Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-09-20
New Astron.Rev. 48 (2004) 1145-1150
Astronomy and Astrophysics
Astrophysics
6 pages, 3 figures, to appear in: "Science with the Square Kilometer Array", eds. C. Carilli & S. Rawlings, New Astronomy Revi
Scientific paper
10.1016/j.newar.2004.09.035
An important area of study of cosmic magnetic fields is on the largest scales, those of clusters of galaxies. In the last decade it has become clear that the intra-cluster medium (ICM) in clusters of galaxies is magnetized and that magnetic fields play a critical role in the cluster formation and evolution. The observational evidence for the existence of cluster magnetic fields is obtained by the diffuse cluster-wide synchrotron radio emission and from rotation measure (RM) studies of extragalactic radio sources located within or behind the clusters. A significant breakthrough in the knowledge of the cluster magnetic fields will be reached through the SKA, owing to its capabilities, in particular the deep sensitivity and the polarization purity.
Feretti Luigina
Johnston-Hollitt Melanie
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