Planck 2015 results XVIII. Background geometry and topology of the Universe

被引:75
作者
Ade, P. A. R. [99 ]
Aghanim, N. [64 ]
Arnaud, M. [80 ]
Ashdown, M. [7 ,78 ]
Aumont, J. [64 ]
Baccigalupi, C. [97 ]
Banday, A. J. [11 ,108 ]
Barreiro, R. B. [71 ]
Bartolo, N. [34 ,72 ]
Basak, S. [97 ]
Battaner, E. [109 ,110 ]
Benabed, K. [65 ,110 ]
Benoit, A. [62 ]
Benoit-Levy, A. [27 ,65 ]
Bernard, J-P. [11 ,108 ]
Bersanelli, M. [37 ,52 ]
Bielewicz, P. [11 ,92 ,97 ]
Bock, J. J. [13 ,73 ]
Bonaldi, A. [74 ]
Bonavera, L. [22 ]
Bond, J. R. [10 ]
Borrill, J. [16 ,102 ]
Bouchet, F. R. [65 ,101 ]
Bucher, M. [1 ]
Burigana, C. [35 ,51 ,53 ]
Butler, R. C. [51 ]
Calabrese, E. [105 ]
Cardoso, J. -F. [1 ,65 ,81 ,82 ]
Catalano, A. [79 ,83 ]
Challinor, A. [7 ,14 ,76 ]
Chamballu, A. [18 ,64 ,80 ]
Chiang, H. C. [8 ]
Christensen, P. R. [40 ,93 ]
Church, S. [104 ]
Clements, D. L. [60 ]
Colombi, S. [65 ]
Colombo, L. P. L. [26 ,73 ]
Combet, C. [83 ]
Couchot, F. [78 ]
Coulais, A. [79 ]
Crill, B. P. [13 ,73 ]
Curto, A. [7 ,71 ,76 ]
Cuttaia, F. [51 ]
Danese, L. [97 ]
Davies, R. D. [74 ]
Davis, R. J. [74 ]
de Bernardis, P. [36 ]
de Rosa, A. [51 ]
de Zotti, G. [48 ,97 ]
Delabrouille, J. [1 ]
机构
[1] Univ Paris Diderot, APC, CNRS IN2P3, CEA Lrfu,Observ Paris,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-13 Paris, France
[2] Aalto Univ, Metsahovi Radio Observ, POB 13000, Aalto 00076, Finland
[3] Aalto Univ, Dept Radio Sci & Engn, POB 13000, Aalto 00076, Finland
[4] African Inst Math Sci, 6-8 Melrose Rd, Cape Town, South Africa
[5] Agenzia Spaziale Italiana Sci, Ctr Data, Via Politecn Snc, I-00133 Rome, Italy
[6] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France
[7] Univ Cambridge, Cavendish Lab, Astrophys Grp, JJ Thomson Ave, Cambridge CB3 0HE, England
[8] Univ KwaZulu Natal, Sch Math Stat & Comp Sci, Astrophys & Cosmol Res Unit, Westville Campus,Private Bag X54001, ZA-4000 Durban, South Africa
[9] CGEE, SCS Qd 9,Lote C,Torre C,4 Andar, BR-70308200 Brasilia, DF, Brazil
[10] Univ Toronto, CITA, 60 St George St, Toronto, ON M5S 3H8, Canada
[11] IRAP, CNRS, 9 Ave Colonel Roche,BP 44346, F-31028 Toulouse 4, France
[12] Trinity Coll Dublin, CRANN, Dublin 2, Ireland
[13] CALTECH, Pasadena, CA 91125 USA
[14] Univ Cambridge, DAMTP, Ctr Theoret Cosmol, Wilberforce Rd, Cambridge CB3 0WA, England
[15] CEFCA, Plaza San Juan,1,Planta 2, Teruel 44001, Spain
[16] Lawrence Berkeley Natl Lab, Computat Cosmol Ctr, Berkeley, CA 94720 USA
[17] CSIC, Plaza Murillo 2, E-28006 Madrid, Spain
[18] CEA Saclay, DSM Irfu SPP, F-91191 Gif Sur Yvette, France
[19] Tech Univ Denmark, Natl Space Inst, DTU Space, Elektrovej 327, DK-2800 Lyngby, Denmark
[20] Univ Geneva, Dept Phys Theor, 24 Quai E Ansermet, CH-1211 Geneva 4, Switzerland
[21] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain
[22] Univ Oviedo, Dept Fis, Avda Calvo Sotelo S-N, Oviedo 33003, Spain
[23] Univ Toronto, Dept Astron & Astrophys, 50 St George St, Toronto, ON, Canada
[24] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, POB 9010, NL-6500 GL Nijmegen, Netherlands
[25] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC, Canada
[26] Univ Southern Calif, Dept Phys & Astron, Dana & David Dornsife Coll Letter Arts & Sci, Los Angeles, CA 90089 USA
[27] UCL, Dept Phys & Astron, London WC1E 6BT, England
[28] Florida State Univ, Dept Phys, Keen Phys Bldg,77 Chieftan Way, Tallahassee, FL 32306 USA
[29] Univ Helsinki, Dept Phys, Gustaf Hallstromin Katu 2a, Helsinki 00100, Finland
[30] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
[31] Univ Alberta, Dept Phys, 11322-89 Ave, Edmonton, AB T6G 2G7, Canada
[32] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[33] Univ Illinois, Dept Phys, 1110 West Green St, Urbana, IL 61801 USA
[34] Univ Padua, Dipartimento Fis & Astron G Galilei, Via Marzolo 8, I-35131 Padua, Italy
[35] Univ Ferrara, Dipartimento Fis & Sci Terra, Via Saragat 1, I-44122 Ferrara, Italy
[36] Univ Roma La Sapienza, Dipartimento Fis, Ple A Moro 2, Rome, Italy
[37] Univ Milan, Dipartimento Fis, Via Celoria 16, Milan, Italy
[38] Univ Trieste, Dipartimento Fis, Via A Valerio 2, Trieste, Italy
[39] Univ Roma Tor Vergata, Dipartimento Matemat, Via Ric Sci 1, Rome, Italy
[40] Niels Bohr Inst, Discovery Ctr, Blegdamsvej 17, Copenhagen, Denmark
[41] Univ Copenhagen, Niels Bohr Inst, Discovery Ctr, Blegdamsvej 17, Copenhagen, Denmark
[42] European Space Agcy, ESAC, Planck Sci Off, Camino Bajo Castillo S-N, Madrid 28692, Spain
[43] European Space Agcy, Estec, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands
[44] Ist Nazl Fis Nucl, Gran Sasso Sci Inst, Viale F Crispi 7, I-67100 Laquila, Italy
[45] HGSFP, Philosophenweg 16, D-69120 Heidelberg, Germany
[46] Heidelberg Univ, Dept Theoret Phys, Philosophenweg 16, D-69120 Heidelberg, Germany
[47] Univ Helsinki, Helsinki Inst Phys, Gustaf Hallstromin Katu 2, Helsinki, Finland
[48] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, Padua, Italy
[49] INAF Osservatorio Astron Roma, Via Frascati 33, Monte Porzio Catone, Italy
[50] INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, Trieste, Italy
基金
加拿大创新基金会;
关键词
cosmic background radiation; cosmology: observations; cosmological parameters; gravitation; methods: data analysis; methods:statistical; DODECAHEDRAL SPACE TOPOLOGY; BIANCHI-VIIH; COBE-DMR; COSMOLOGICAL MODELS; CMB ANISOTROPY; MICROWAVE; SKY; CONSTRAINTS; EFFICIENT; ROTATION;
D O I
10.1051/0004-6361/201525829
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Maps of cosmic microwave background (CMB) temperature and polarization from the 2015 release of Planck data provide the highest quality full-sky view of the surface of last scattering available to date. This enables us to detect possible departures from a globally isotropic cosmology. We present the first searches using CMB polarization for correlations induced by a possible non-trivial topology with a fundamental domain that intersects, or nearly intersects, the last-scattering surface (at comoving distance chi(rec)), both via a direct scan for matched circular patterns at the intersections and by an optimal likelihood calculation for specific topologies. We specialize to flat spaces with cubic toroidal (T3) and slab (T1) topologies, finding that explicit searches for the latter are sensitive to other topologies with antipodal symmetry. These searches yield no detection of a compact topology with a scale below the diameter of the last-scattering surface. The limits on the radius R-i of the largest sphere inscribed in the fundamental domain (at log-likelihood ratio Delta ln L > -5 relative to a simply-connected flat Planck best-fit model) are: R-i > 0.97 chi(rec) for the T3 cubic torus; and R-i > 0.56 chi(rec) for the T1 slab. The limit for the T3 cubic torus from the matched-circles search is numerically equivalent, R-i > 0.97 chi(rec) at 99% confidence level from polarization data alone. We also perform a Bayesian search for an anisotropic global Bianchi VIIh geometry. In the non-physical setting, where the Bianchi cosmology is decoupled from the standard cosmology, Planck temperature data favour the inclusion of a Bianchi component with a Bayes factor of at least 2.3 units of log-evidence. However, the cosmological parameters that generate this pattern are in strong disagreement with those found from CMB anisotropy data alone. Fitting the induced polarization pattern for this model to the Planck data requires an amplitude of -0.10 +/- 0.04 compared to the value of + 1 if the model were to be correct. In the physically motivated setting, where the Bianchi parameters are coupled and fitted simultaneously with the standard cosmological parameters, we find no evidence for a Bianchi VIIh cosmology and constrain the vorticity of such models to (omega/H)(0) < 7.6 x 10(-10) (95% CL).
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页数:21
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Danese, L. ;
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de Bernardis, P. ;
de Rosa, A. ;
de Zotti, G. ;
Delabrouille, J. .
ASTRONOMY & ASTROPHYSICS, 2016, 594