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Renzi, A.-S. Suur-Uski, A. Zacchei, A. Zonca, B. D. Wandelt, B. G. Keating, BICEP2/Keck, B. Maffei, B. Partridge, B. P. Crill, B. Rusholme, B. Van Tent, C. A. Bischoff, C. Baccigalupi, C. B. Netterfield, C. Burigana, C. Combet, C. D. Dowell, C. Dickinson, C. D. Sheehy, C. Dvorkin, C. L. Kuo, C. L. Wong, C. Pryke, C. Renault, C. R. Lawrence, D. Barkats, D. Hanson, D. Herranz, D. L. Harrison, D. Maino, D. Mortlock, D. Munshi, D. Novikov, D. Paoletti, D. Pietrobon, D. Santos, D. Scott, D. Sutton, D. Yvon, E. Battaner, E. Bullock, E. Calabrese, E. Falgarone, E. Franceschi, E. Gjerl{\\o}w, E. Hivon, E. Keih\\\"anen, E. Mart\\'inez-Gonz\\'alez, E. M. Leitch, E. Pointecouteau, F. Boulanger, F. Couchot, F. Cuttaia, F. Elsner, F. Finelli, F. K. Hansen, F. Levrier, F. Nati, F. Noviello, F. Pajot, F. Pasian, F. Piacentini, F. R. Bouchet, F. Villa, F.-X. D\\'esert, G. C. Hilton, G. de Zotti, G. Efstathiou, G. Helou, G. Hurier, G. Lagache, G. Morgante, G. Patanchon, G. Polenta, G. P. Teply, G. Rocha, G. Roudier, G. Savini, G. W. Pratt, H. C. Chiang, H. Dole, H. Hui, H. K. Eriksen, H. Kurki-Suonio, H. T. Nguyen, H. U. N{\\o}rgaard-Nielsen, I. Buder, I. K. Wehus, I. Novikov, I. Ristorcelli, J. A. Brevik, J. A. Murphy, J. A. Rubi\\~no-Mart\\'in, J. A. Tauber, J. Aumont, J. Borrill, J. Connors, J. Delabrouille, J. Dunkley, J. E. Gudmundsson, J. E. Tolan, J.-F. Cardoso, J. F. Mac\\'ias-P\\'erez, J.-F. Sygnet, J. G. Bartlett, J. Gonz\\'alez-Nuevo, J. J. Bock, J. Jewell, J. Knoche, J.-L. Puget, J.-M. Delouis, J. M. Diego, J. M. Kovac, J.-M. Lamarre, J.-P. Bernard, J. P. Filippini, J. P. Kaufman, J. P. Rachen, J. R. Bond, J. Valiviita, J. Willmert, K. Benabed, K. D. Alexander, K. D. Irwin, K. Ganga, K. G. Megerian, K. L. Thompson, K. M. G\\'orski, K. M. Huffenberger, K. S. Karkare, K. W. Yoon, L. A. Wade, L. Bonavera, L. Danese, L. D. Spencer, L. Duband, L. Knox, L. Mendes, L. Montier, L. Pagano, L. Perotto, L. P. L. Colombo, L. Terenzi, L. Toffolatti, L. Valenziano, L. 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Fliescher, S. Galeotta, S. Galli, S. Gratton, S. Henrot-Versill\\'e, S. J. Benton, S. Kefeli, S. Masi, S. Matarrese, S. Mitra, S. Plaszczynski, S. Prunet, S. R. Golwala, S. R. Hildebrandt, S. Richter, T. A. En{\\ss}lin, T. Ghosh, T. J. Pearson, T. R. Jaffe, T. S. Kisner, V. Buza, V. Pettorino, V. Stolyarov, V. V. Hristov, W. A. Holmes, W. C. Jones, W. Hovest, W. T. Reach, X. Dupac, Z. Ahmed, Z. K. Staniszewski","submitted_at":"2015-02-02T20:35:01Z","abstract_excerpt":"We report the results of a joint analysis of data from BICEP2/Keck Array and Planck. BICEP2 and Keck Array have observed the same approximately 400 deg$^2$ patch of sky centered on RA 0h, Dec. $-57.5\\deg$. The combined maps reach a depth of 57 nK deg in Stokes $Q$ and $U$ in a band centered at 150 GHz. Planck has observed the full sky in polarization at seven frequencies from 30 to 353 GHz, but much less deeply in any given region (1.2 $\\mu$K deg in $Q$ and $U$ at 143 GHz). We detect 150$\\times$353 cross-correlation in $B$-modes at high significance. 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R. Bond, J. Valiviita, J. Willmert, K. Benabed, K. D. Alexander, K. D. Irwin, K. Ganga, K. G. Megerian, K. L. Thompson, K. M. G\\'orski, K. M. Huffenberger, K. S. Karkare, K. W. Yoon, L. A. Wade, L. Bonavera, L. Danese, L. D. Spencer, L. Duband, L. Knox, L. Mendes, L. Montier, L. Pagano, L. Perotto, L. P. L. Colombo, L. Terenzi, L. Toffolatti, L. Valenziano, L. Vibert, M.-A. Miville-Desch\\^enes, M. Arnaud, M. Bersanelli, M. Bucher, M. Douspis, M. D. Seiffert, M. Frailis, M. Giard, M. Halpern, M. Hasselfield, M. Hobson, M. Juvela, M. Kunz, M. Lattanzi, M. Liguori, M. Linden-V{\\o}rnle, M. L\\'opez-Caniego, M. Lueker, M. Maris, M. Migliaccio, M. Piat, M. Reinecke, M. Remazeilles, M. Rossetti, M. Rowan-Robinson, M. Sandri, M. Savelainen, M. Tomasi, M. Tristram, M. Tucci, M. White, N. Aghanim, N. Bartolo, N. Krachmalnicoff, N. Mandolesi, N. Ponthieu, O. Dor\\'e, O. Forni, O. Perdereau, P. Bielewicz, P. B. Lilje, P. De Bernardis, P. G. Martin, Planck Collaborations: P. A. R. Ade, P. Mason, P. M. Lubin, P. Naselsky, P. Natoli, P. R. Christensen, P. R. Meinhold, P. Vielva, R. B. Barreiro, R. C. Butler, R. D. Davies, R. J. Davis, R. Keskitalo, R. Kneissl, R. Leonardi, R. O'Brient, R. Paladini, R.-R. Chary, R. Rebolo, R. Schwarz, R. Sudiwala, R. Sunyaev, R. W. Aikin, R. Watson, R. W. Ogburn IV, S. A. Kernasovskiy, S. D. M. White, S. Donzelli, S. Fliescher, S. Galeotta, S. Galli, S. Gratton, S. Henrot-Versill\\'e, S. J. Benton, S. Kefeli, S. Masi, S. Matarrese, S. Mitra, S. Plaszczynski, S. Prunet, S. R. Golwala, S. R. Hildebrandt, S. Richter, T. A. En{\\ss}lin, T. Ghosh, T. J. Pearson, T. R. Jaffe, T. S. Kisner, V. Buza, V. Pettorino, V. Stolyarov, V. V. Hristov, W. A. Holmes, W. C. Jones, W. Hovest, W. T. Reach, X. Dupac, Z. Ahmed, Z. K. Staniszewski","submitted_at":"2015-02-02T20:35:01Z","abstract_excerpt":"We report the results of a joint analysis of data from BICEP2/Keck Array and Planck. 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