{"paper":{"title":"Planck Early Results XXVI: Detection with Planck and confirmation by XMM-Newton of PLCK G266.6-27.3, an exceptionally X-ray luminous and massive galaxy cluster at z~1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Balbi, A. Beno\\^it, A. Bonaldi, A. Catalano, A. Da Silva, A. Gregorio, A. Gruppuso, A. H. Jaffe, A. J. Banday, A. L\\\"ahteenm\\\"aki, A. Lasenby, A. Liddle, A. Melchiorri, A. Mennella, A. Moneti, A. Zacchei, A. Zonca, B. Cappellini, B. D. Wandelt, B. M. Schaefer, B. P. Crill, C. Baccigalupi, C. Burigana, C. Chiang, C. Dickinson, C. Hern\\'andez-Monteagudo, C. Leroy, C. M. Cantalupo, C. Renault, C. R. Lawrence, D. Harrison, D. L. Clements, D. Maino, D. Mortlock, D. Munshi, D. Novikov, D. Scott, D. Sutton, D. Yvon, E. Battaner, E. Churazov, E. Franceschi, E. Hivon, E. Keih\\\"anen, E. Mart\\'inez-Gonz\\'alez, E. Pierpaoli, E. Pointecouteau, E. Saar, F. Atrio-Barandela, F. Cuttaia, F. Finelli, F. K. Hansen, F. Marleau, F. Noviello, F. Pasian, F. Perrotta, F. Piacentini, F. R. Bouchet, F. Villa, F.-X. D\\'esert, G. Chon, G. De Gasperis, G. de Zotti, G. Efstathiou, G. F. Smoot, G. Hurier, G. Lagache, G. Luzzi, G. Morgante, G. Patanchon, G. Polenta, G. Pr\\'ezeau, G. Rocha, G. Savini, G. W. Pratt, H. B\\\"ohringer, H. Dahle, H. Dole, H. K. Eriksen, H. Kurki-Suonio, H. U. N{\\o}rgaard-Nielsen, I. Flores-Cacho, I. J. O'Dwyer, I. Novikov, I. Ristorcelli, J. A. Rubi\\~no-Mart\\'in, J. A. Tauber, J. Aumont, J.-B. Melin, J. Borrill, J. Delabrouille, J. D\\'emocl\\`es, J. F. Mac\\'ias-P\\'erez, J.-F. Sygnet, J. G. Bartlett, J. Gonz\\'alez-Nuevo, J.-L. Puget, J.-L. Starck, J.-M. Delouis, J. M. Diego, J.-M. Lamarre, J. Nevalainen, J.-P. Bernard, J. P. Rachen, J. R. Bond, J. Weller, K. Benabed, K. Ganga, K. M. G\\'orski, L. A. Wade, L. Cay\\'on, L. Danese, L. Mendes, L. Montier, L. Perotto, L. Popa, L. Terenzi, L. Toffolatti, L. Valenziano, L.-Y Chiang, M.-A. Miville-Desch\\^enes, M. Arnaud, M. Ashdown, M. Bersanelli, M. Douspis, M. Frailis, M. Giard, M. Hobson, M. Juvela, M. L. Brown, M. Le Jeune, M. L\\'opez-Caniego, M. Reinecke, M. Sandri, M. Tomasi, M. Tristram, M. T\\\"urler, M. White, N. Mandolesi, N. Ponthieu, N. Vittorio, O. D'arcangelo, O. Dor\\'e, O. Forni, O. Perdereau, P. B. Lilje, P. Cabella, P. Carvalho, P. De Bernardis, P. Fosalba, P. Hein\\\"am\\\"aki, Planck Collaboration: N. Aghanim, P. Mazzotta, P. Naselsky, P. Natoli, P. Platania, P. R. Christensen, P. R. Meinhold, P. Vielva, R. B. Barreiro, R. Bhatia, R. Gonz\\'alez-Riestra, R. J. Davis, R. Keskitalo, R. Kneissl, R. Leonardi, R. Paladini, R. Piffaretti, R. Rebolo, R. T. G\\'enova-Santos, S. Borgani, S. Colafrancesco, S. Colombi, S. D. M. White, S. Donzelli, S. Fromenteau, S. Galeotta, S. Leach, S. Masi, S. Matarrese, S. Osborne, S. Prunet, S. R. Hildebrandt, S. Ricciardi, T. A. En{\\ss}lin, T. J. Pearson, T. Poutanen, T. Riller, T. S. Kisner, W. C. Jones, X. Dupac","submitted_at":"2011-06-07T15:45:12Z","abstract_excerpt":"We present first results on PLCK G266.6-27.3, a galaxy cluster candidate detected at a signal-to-noise ratio of 5 in the Planck All Sky survey. An XMM-Newton validation observation has allowed us to confirm that the candidate is a bona fide galaxy cluster. With these X-ray data we measure an accurate redshift, z = 0.94 +/- 0.02, and estimate the cluster mass to be M_500 = (7.8 +/- 0.8)e+14 solar masses. PLCK G266.6-27.3 is an exceptional system: its luminosity of L_X(0.5-2.0 keV)=(1.4 +/- 0.05)e+45 erg/s, equals that of the two most luminous known clusters in the z > 0.5 universe, and it is on"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.1376","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}