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    A Joint Analysis of BICEP2/Keck Array and Planck Data


    Ade, P.A.R., Aghanim, N., Ahmed, Z., Aikin, R.W., Alexander, K.D., Arnaud, M., Aumont, J., Baccigalupi, C., Banday, A.J., Barkats, D., Barreiro, R.B., Bartlett, J.G., Bartolo, N., Battaner, E., Benabed, K., Benoit, A., Benoit-Lévy, A., Benton, S.J., Bernard, J.-P., Bersanelli, M., Bielewicz, P., Bischoff, C.A., Bock, J.J., Bonaldi, A., Bonavera, L., Bond, J.R., Borrill, J., Bouchet, F.R., Boulanger, F., Brevik, J.A., Bucher, M., Buder, I., Bullock, E., Burigana, C., Butler, R.C., Buza, V., Calabrese, E., Cardoso, J.-F., Catalano, A., Challinor, A., Chary, R.-R., Chiang, H.C., Christensen, P.R., Colombo, L.P.L., Combet, C., Connors, J., Couchot, F., Coulais, A., Crill, B.P., Curto, A., Cuttaia, F., Danese, L., Davies, R.D., Davis, R.J., De Bernardis, P., de Rosa, A., de Zotti, G., Delabrouille, J., Delouis, J.-M., Desert, F.-X., Dickinson, C., Diego, J.M., Dole, H., Donzelli, S., Dore, O., Douspis, M., Dowell, C.D., Duband, L., Ducout, A., Dunkley, J., Dupac, X., Dvorkin, Cora, Efstathiou, G., Elsner, F., Enßlin, T.A., Eriksen, H.K., Falgarone, E., Filippini, J.P., Finelli, F., Fliescher, S., Forni, O., Frailis, M., Fraisse, A.A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Ghosh, T., Giard, M., Gjerløw, E., Golwala, S.R., Gonzalez-Nuevo, J., Gorski, K.M., Gratton, S., Gregorio, A., Gruppuso, A., Gudmundsson, J.E., Halpern, M., Hansen, F.K., Hanson, D., Harrison, D.L., Hasselfield, M., Helou, G., Henrot-Versille, S., Herranz, D., Hildebrandt, S.R., Hilton, G., Hivon, E., Hobson, M., Holmes, W.A., Hovest, W., Hristov, V.V., Huffenberger, K.M., Hui, H., Hurier, G., Irwin, K.D., Jaffe, A.H., Jaffe, T.R., Jewell, J., Jones, W.C., Juvela, M., Karakci, A., Karkare, K.S., Kaufman, J.P., Keating, B.G., Kefeli, S., Keihanen, E., Kernasovskiy, S.A., Keskitalo, R., Kisner, T.S., Kneissl, R., Knoche, J., Knox, L., Kovac, J., Krachmalnicoff, N., Kunz, M., Kuo, C.L., Kurki-Suonio, H., Lagache, G., Lahteenmaki, A., Lamarre, J.-M., Lasenby, A., Lattanzi, M., Lawrence, C.R., Leitch, E.M., Leonardi, R., Levrier, F., Lewis, A., Liguori, M., Lilje, P.B., Linden-Vornle, M., Lopez-Caniego, M., Lubin, P.M., Lueker, M., Macias-Perez, J.F., Maffei, B., Maino, D., Mandolesi, N., Mangilli, A., Maris, M., Martin, P.G., Martinez-Gonzalez, E., Masi, S., Mason, P., Matarrese, S., Megerian, K.G., Meinhold, P.R., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Mitra, S., Miville-Deschenes, M.-A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Moss, A., Munshi, D., Murphy, J.Anthony, Naselsky, P., Nati, F., Natoli, P., Netterfield, C.B., Nguyen, H.T., Norgaard-Nielsen, H.U., Noviello, F., Novikov, D., Novikov, I., O'Brient, R., Ogburn IV, R.W., Orlando, A., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Partridge, B., Pasian, F., Patanchon, G., Pearson, T.J., Perdereau, O., Perotto, L., Pettorino, V., Piacentini, F., Piat, M., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Ponthieu, N., Pratt, G.W., Prunet, S., Pryke, C., Puget, J.-L., Rachen, J.P., Reach, W.T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Richter, S., Ristorcelli, I., Rocha, G., Rossetti, M., Roudier, G., Rowan-Robinson, M., Rubino-Martin, J.A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Schwarz, R., Scott, D., Seiffert, M.D., Sheehy, C.D., Spencer, L., Staniszewski, Z.K., Stolyarov, V., Sudiwala, R., Sunyaev, R., Sutton, D., Suur-Uski, A.-S., Sygnet, J.-F., Tauber, J.A., Teply, G.P., Terenzi, L., Thompson, K.L., Toffolatti, L., Tolan, J.E., Tomasi, M., Tristram, M., Tucci, M., Turner, A.D., Valenziano, L., Valiviita, J., Van Tent, B., Vibert, L., Vielva, P., Vieregg, A.G., Villa, F., Wade, L.A., Wandelt, B.D., Watson, R., Weber, A.C., Wehus, I., White, M., White, S.D.M., Willmert, J., Wong, C.L., Yoon, K.W., Yvon, D., Zacchei, A. and Zonca, A. (2015) A Joint Analysis of BICEP2/Keck Array and Planck Data. Physical Review Letters, 114 (101301). ISSN 1079-7114

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    Abstract

    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 deg2 patch of sky centered on RA 0h, Dec. −57.5°. 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 μK deg in Q and U at 143 GHz). We detect 150×353 cross-correlation in B-modes at high significance. We fit the single- and cross-frequency power spectra at frequencies ≥150 GHz to a lensed-ΛCDM model that includes dust and a possible contribution from inflationary gravitational waves (as parameterized by the tensor-to-scalar ratio r), using a prior on the frequency spectral behavior of polarized dust emission from previous Planck analysis of other regions of the sky. We find strong evidence for dust and no statistically significant evidence for tensor modes. We probe various model variations and extensions, including adding a synchrotron component in combination with lower frequency data, and find that these make little difference to the r constraint. Finally we present an alternative analysis which is similar to a map-based cleaning of the dust contribution, and show that this gives similar constraints. The final result is expressed as a likelihood curve for r, and yields an upper limit r0.05<0.12 at 95% confidence. Marginalizing over dust and r, lensing B-modes are detected at 7.0σ significance.
    Item Type: Article
    Additional Information: Please cite as “BICEP2/Keck and Planck Collaborations.”
    Keywords: BICEP2/Keck Array; Planck;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 14025
    Identification Number: 10.1103/PhysRevLett.114.101301
    Depositing User: IR Editor
    Date Deposited: 16 Feb 2021 15:59
    Journal or Publication Title: Physical Review Letters
    Publisher: American Physical Society
    Refereed: Yes
    Related URLs:
    URI: https://mural.maynoothuniversity.ie/id/eprint/14025
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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