Planck intermediate results XLI. A map of lensing-induced B-modes

被引:26
作者
Ade, P. A. R. [84 ]
Aghanim, N. [56 ]
Ashdown, M. [7 ,66 ]
Aumont, J. [56 ]
Baccigalupi, C. [83 ]
Banday, A. J. [11 ,93 ]
Barreiro, R. B. [61 ]
Bartolo, N. [31 ,62 ]
Basak, S. [83 ]
Battaner, E. [94 ,95 ]
Benabed, K. [57 ,92 ]
Benoit-Levy, A. [1 ,11 ,25 ,33 ,34 ,44 ,47 ,54 ,56 ,57 ,61 ,63 ,64 ,66 ,68 ,69 ,76 ,83 ,84 ,92 ,93 ]
Bernard, J. -P. [11 ,93 ]
Bersanelli, M. [34 ,49 ]
Bielewicz, P. [11 ,78 ,83 ]
Bock, J. J. [13 ,63 ]
Bonaldi, A. [56 ,57 ,61 ,63 ,64 ,66 ,84 ,92 ]
Bonavera, L. [61 ]
Bond, J. R. [10 ]
Borrill, J. [15 ,88 ]
Bouchet, F. R. [57 ,86 ]
Boulanger, F. [56 ]
Burigana, C. [32 ,48 ,50 ]
Butler, R. C. [48 ]
Calabrese, E. [90 ]
Cardoso, J. -F. [1 ,57 ,71 ]
Catalano, A. [56 ,57 ,69 ,72 ]
Chiang, H. C. [8 ,27 ]
Christensen, P. R. [36 ,79 ]
Clements, D. L. [54 ]
Colombi, S. [57 ,92 ]
Colombo, L. P. L. [24 ,63 ]
Combet, C. [72 ]
Crill, B. P. [13 ,63 ]
Curto, A. [7 ,61 ,66 ]
Cuttaia, F. [48 ]
Danese, L. [83 ]
Davis, R. J. [64 ]
de Bernardis, P. [33 ]
de Zotti, G. [45 ,83 ]
Delabrouille, J. [1 ]
Dickinson, C. [64 ]
Diego, J. M. [61 ]
Dore, O. [13 ,63 ]
Ducout, A. [54 ,57 ]
Dupac, X. [38 ]
Elsner, F. [25 ,57 ,92 ]
Ensslin, T. A. [76 ]
Eriksen, H. K. [59 ]
Finelli, F. [48 ,50 ]
机构
[1] Univ Paris Diderot, APC, CNRS IN2P3, CEAlrfu,Observ Paris,Sorbonne Paris Cite, F-75205 Paris 13, France
[2] Aalto Univ Metsahovi Radio Observ, Aalto 00076, Finland
[3] Dept Radio Sci & Engn, Aalto 00076, Finland
[4] African Inst Math Sci, ZA-00040 Cape Town, South Africa
[5] Agenzia Spaziale Italiana Sci Data Ctr, I-00133 Rome, Italy
[6] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France
[7] Univ Cambridge, Astrophys Grp, Cavendish Lab, Cambridge CB3 OHE, England
[8] Univ KwaZulu Natal, Sch Math Stat & Comp Sci, Astrophys & Cosmol Res Unit, ZA-4000 Durban, South Africa
[9] CGEE, SCS Qd 9, BR-70308200 Brasilia, DF, Brazil
[10] Univ Toronto, CITA, Toronto, ON M5S 3H8, Canada
[11] CNRS, IRAP, F-31028 Toulouse 4, France
[12] Trinity Coll Dublin, CRANN, Dublin, Ireland
[13] CALTECH, Pasadena, CA 91109 USA
[14] CEFCA, Teruel 44001, Spain
[15] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Cosmol Ctr, Berkeley, CA 94720 USA
[16] CEA Saclay, DSM Irfu SPP, F-91191 Gif Sur Yvette, France
[17] Tech Univ Denmark, Natl Space Inst, DTU Space, DK-2800 Lyngby, Denmark
[18] Univ Geneva, Dept Phys Theor, CH-1211 Geneva 4, Switzerland
[19] ULL, Dept Astrofis, Tenerife 38206, Spain
[20] Univ Oviedo, Dept Fis, Oviedo 33007, Spain
[21] Univ Toronto, Dept Astron & Astrophys, Toronto, ON, Canada
[22] Radboud Univ Nijmegen, Dept Astrophys IMAPP, NL-6500 GL Nijmegen, Netherlands
[23] Univ British Columbia, Dept Phys & Astron, Vancouver, BC, Canada
[24] Univ Southern Calif, Dept Phys & Astron, Dana & David Dornsife Coll Letter, Arts & Sci, Los Angeles, CA 90089 USA
[25] UCL, Dept Phys & Astron, London WC1E 6BT, England
[26] Univ Helsinki, Dept Phys, Helsinki 00560, Finland
[27] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
[28] Univ Calif Davis, Dept Phys, Davis, CA 93106 USA
[29] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[30] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
[31] Univ Padua, Dipartimento Fis Astron G Galilei, I-35131 Padua, Italy
[32] Univ Ferrara, Dipartimento Fis & Sci Terra, I-44122 Ferrara, Italy
[33] Univ Roma La Sapienza, Dipartimento Fis, I-00133 Rome, Italy
[34] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[35] Univ Roma Tor Vergata, Dipartimento Matemat, I-00133 Rome, Italy
[36] Niels Bohr Inst, Discovery Ctr, DK-1165 Copenhagen, Denmark
[37] Univ Copenhagen, Discovery Ctr, Niels Bohr Inst, DK-1165 Copenhagen, Denmark
[38] Planck Sci Off, ESAC, European Space Agcy, Madrid 28691, Spain
[39] Estec, European Space Agcy, NL-2201 AZ Noordwijk, Netherlands
[40] Univ e Campus, Fac Ingn, I-22060 Novedrate, CO, Italy
[41] INFN, Gran Sasso Sci Inst, I-67100 Laquila, Italy
[42] HGSFP, D-69120 Heidelberg, Germany
[43] Heidelberg Univ, Dept Theoret Phys, D-69120 Heidelberg, Germany
[44] Aalto Univ, Univ Helsinki, Helsinki Inst Phys, Helsinki, Finland
[45] INAF, Osserv Astron Padova, I-35131 Padua, Italy
[46] INAF, Osserv Astron Roma, I-00040 Monte Porzio Catone, Italy
[47] INAF, Osserv Astron Trieste, Trieste, Italy
[48] INAF IASF Bologna, I-40126 Bologna, Italy
[49] INAF IASF Milano, I-20133 Milan, Italy
[50] INFN, Sez Bologna, I-40126 Bologna, Italy
关键词
cosmology: observations; cosmic background radiation; polarization; gravitational lensing: weak; INFLATIONARY UNIVERSE SCENARIO; GRAVITY-WAVES; POLARIZATION; RECONSTRUCTION; COSMOLOGY; PROSPECTS; FLATNESS; HORIZON;
D O I
10.1051/0004-6361/201527932
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The secondary cosmic microwave background (CMB) B-modes stem from the post-decoupling distortion of the polarization E-modes due to the gravitational lensing effect of large-scale structures. These lensing-induced B-modes constitute both a valuable probe of the dark matter distribution and an important contaminant for the extraction of the primary CMB B-modes from inflation. Planck provides accurate nearly all-sky measurements of both the polarization E-modes and the integrated mass distribution via the reconstruction of the CMB lensing potential. By combining these two data products, we have produced an all-sky template map of the lensing-induced B-modes using a real-space algorithm that minimizes the impact of sky masks. The cross-correlation of this template with an observed (primordial and secondary) B-mode map can be used to measure the lensing B-mode power spectrum at multipoles up to 2000. In particular, when cross-correlating with the B-mode contribution directly derived from the Planck polarization maps, we obtain lensing-induced B-mode power spectrum measurement at a significance level of 12 sigma, which agrees with the theoretical expectation derived from the Planck best-fit Lambda cold dark matter model. This unique nearly all-sky secondary B-mode template, which includes the lensing-induced information from intermediate to small (10 less than or similar to l less than or similar to 1000) angular scales, is delivered as part of the Planck 2015 public data release. It will be particularly useful for experiments searching for primordial B-modes, such as BICEP2/Keck Array or LiteBIRD, since it will enable an estimate to be made of the lensing-induced contribution to the measured total CMB B-modes.
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