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Complex diffuse emission in the z=0.52 cluster PLCK~G004.5-19.5

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arxiv 1708.00789 v2 pith:TPQCJDSN submitted 2017-08-02 astro-ph.CO astro-ph.GA

Complex diffuse emission in the z=0.52 cluster PLCK~G004.5-19.5

J. G. Albert , C. Sif\'on , A. Stroe , F. Mernier , H. T. Intema , H. J. A. R\"ottgering , G. Brunetti This is my paper
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We present radio observations of the galaxy cluster PLCK G004.5-19.5 ($z=0.52$) using the Giant Metrewave Radio Telescope at 150~MHz, 325~MHz, and 610~MHz. We find an unusual arrangement of diffuse radio emission in the center and periphery of the cluster, as well as several radio galaxies with head-tail emission. A patch of peripheral emission resembles a radio relic, and central emission resembles a radio halo. Reanalysis of archival XMM-Newton X-ray data shows that PLCK G004.5-19.5 is disturbed, which has a known correlation with the existence of radio relics and halos. Given that the number of known radio halos and radio relics at $z>0.5$ is very limited, PLCK G004.5-19.5 is an important addition to understanding merger-related particle acceleration at higher redshifts.

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Cited by 1 Pith paper

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