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arXiv · 1103.5031

Radio Halos, cluster mergers and the role of future LOFAR observations

Rossella Cassano
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Abstract

A radio bimodality is observed in galaxy clusters: a fraction of clusters host giant radio halos while the majority of clusters do not show evidence of diffuse cluster-scale radio emission. Present data clearly suggest that the radio bi-modality has a correspondence in terms of dynamical state of the hosting clusters. I will report on these evidences in some details and discuss the role of cluster mergers in the generation of giant radio halos and their evolution. Finally I will report on expectations on the statistical properties of radio halos assuming that the emitting electrons are re-accelerated by merger-turbulence, and discuss the role of incoming LOFAR surveys.

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Rossella Cassano. 2011-03-25. Radio Halos, cluster mergers and the role of future LOFAR observations. https://arxiv.org/abs/1103.5031

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