Discovery of a massive X-ray luminous galaxy cluster at z = 1.579 J. S. Santos, R. Fassbender, A. Nastasi, H. Böhringer, P. Rosati, R. Šuhada, D. Pierini, M. Nonino, M. Mühlegger, H. Quintana et al. (4 more) A&A, 531 (2011) L15 Published online: 04 July 2011 DOI: 10.1051/0004-6361/201117190