Lindner et al. (2014) present 610 MHz and
2.1 GHz imaging of the massive Sunyaev-Zel'dovich Effect selected z = 0.870
cluster merger ACT-CL J0102-4915 ("El Gordo"), obtained with the Giant
Metrewave Radio Telescope (GMRT) and the Australia Telescope Compact Array
(ATCA), respectively. They detect two complexes of radio relics separated
by 3.4 arcmin (1.6 Mpc) along the system's northwest-to-southeast collision
axis that have high integrated polarization fractions (33%) and steep
spectral indices, consistent with creation via Fermi acceleration by shocks
in the intracluster medium triggered by the cluster collision.
ATNF
Science Highlights from refereed publications during 2014.
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