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New detections of radio minihalos in cool cores of galaxy clusters
Simona Giacintucci, Maxim Markevitch, Tiziana Venturi +3
Cool cores of some galaxy clusters exhibit faint radio "minihalos." Their origin is unclear; their study has been limited by their small number. We undertook a systematic search fo…
Revisiting scaling relations for giant radio halos in galaxy clusters
R. Cassano, S. Ettori, G. Brunetti +6
Many galaxy clusters host Megaparsec-scale radio halos, generated by ultrarelativistic electrons in the magnetized intracluster medium. Correlations between the power of radio halo…
Shock heating of the merging galaxy cluster A521
H. Bourdin, P. Mazzotta, M. Markevitch +2
A521 is an interacting galaxy cluster located at z=0.247, hosting a low frequency radio halo connected to an eastern radio relic. Previous Chandra observations hinted at the presen…
Discovery of a giant radio halo in a new Planck galaxy cluster PLCKG171.9-40.7
Simona Giacintucci, Ruta Kale, Daniel R. Wik +2
We report the discovery of a giant radio halo in a new, hot, X-ray luminous galaxy cluster recently found by Planck, PLCKG171.9-40.7. The radio halo was found using Giant Metrewave…