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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…
Radio emission at the centre of the galaxy cluster Abell 3560: evidence for core sloshing?
T. Venturi, M. Rossetti, S. Bardelli +4
Previous radio observations of the galaxy cluster A3560 in the Shapley Concentration showed complex radio emission associated with the brightest cluster member.To understand its or…
Chandra View of the Ultra-Steep Spectrum Radio Source in Abell 2443: Merger Shock-Induced Compression of Fossil Radio Plasma?
T. E. Clarke, S. W. Randall, C. L. Sarazin +2
We present a new Chandra X-ray observation of the intracluster medium in the galaxy cluster Abell 2443, hosting an ultra-steep spectrum radio source. The data reveal that the intra…
The Extended GMRT Radio Halo Survey I: New upper limits on radio halos and mini-halos
R. Kale, T. Venturi, S. Giacintucci +5
A fraction of galaxy clusters host diffuse radio sources called radio halos, radio relics and mini-halos. We present the sample and first results from the Extended GMRT Radio Halo…
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…
Sloshing cold fronts in galaxy groups and their perturbing disk galaxies: an X-ray, Optical and Radio Case Study
F. Gastaldello, L. Di Gesu, S. Ghizzardi +10
We present a combined X-ray, optical, and radio analysis of the galaxy group IC 1860 using the currently available Chandra and XMM data, literature multi-object spectroscopy data a…