ClG 0217+70: A massive merging galaxy cluster with a large radio halo and relics X. Zhang, A. Simionescu, J. S. Kaastra, H. Akamatsu, D. N. Hoang, C. Stuardi, R. J. van Weeren, L. Rudnick, R. P. Kraft and S. Brown A&A, 642 (2020) L3 Published online: 01 October 2020 DOI: 10.1051/0004-6361/202039028