Planck 2013 results. XXVII. Doppler boosting of the CMB: Eppur si muove

被引:190
作者
Aghanim, N. [57 ]
Armitage-Caplan, C. [88 ]
Arnaud, M. [70 ]
Ashdown, M. [7 ,67 ]
Atrio-Barandela, F. [17 ]
Aumont, J. [57 ]
Baccigalupi, C. [82 ]
Banday, A. J. [10 ,90 ]
Barreiro, R. B. [64 ]
Bartlett, J. G. [1 ,65 ]
Benabed, K. [58 ,89 ]
Benoit-Levy, A. [23 ,58 ,89 ]
Bernard, J. -P. [10 ,90 ]
Bersanelli, M. [35 ,48 ]
Bielewicz, P. [10 ,82 ,90 ]
Bobin, J. [70 ]
Bock, J. J. [11 ,65 ]
Bond, J. R. [9 ]
Borrill, J. [13 ,86 ]
Bouchet, F. R. [58 ,89 ]
Bridges, M. [7 ,61 ,67 ]
Burigana, C. [33 ,47 ]
Butler, R. C. [47 ]
Cardoso, J. -F. [1 ,58 ,71 ,72 ]
Catalano, A. [69 ,73 ]
Challinor, A. [12 ,61 ,67 ]
Chamballu, A. [14 ,57 ,70 ]
Chiang, H. C. [8 ,27 ]
Chiang, L. -Y [60 ]
Christensen, P. R. [38 ,79 ]
Clements, D. L. [55 ]
Colombo, L. P. L. [22 ,65 ]
Couchot, F. [68 ]
Crill, B. P. [65 ,80 ]
Curto, A. [7 ,64 ]
Cuttaia, F. [47 ]
Danese, L. [82 ]
Davies, R. D. [66 ]
Davis, R. J. [66 ]
de Bernardis, P. [34 ]
de Rosa, A. [47 ]
de Zotti, G. [43 ,82 ]
Delabrouille, J. [1 ]
Diego, J. M. [64 ]
Donzelli, S. [48 ]
Dore, O. [65 ]
Dupac, X. [40 ]
Efstathiou, G. [61 ]
Ensslin, T. A. [77 ]
Eriksen, H. K. [62 ]
机构
[1] Univ Paris Diderot, Observ Paris, Sorbonne Paris Cite, CNRS IN2P3,CEA Irfu,APC, 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-7945 Cape Town, South Africa
[5] Agenzia Spaziale Italiana, Sci Data Ctr, I-00133 Rome, Italy
[6] Agenzia Spaziale Italiana, I-00198 Rome, Italy
[7] Univ Cambridge, Cavendish Lab, Astrophys Grp, Cambridge CB3 0HE, England
[8] Univ KwaZulu Natal, Sch Math Stat & Comp Sci, Astrophys & Cosmol Res Unit, ZA-4000 Durban, South Africa
[9] Univ Toronto, CITA, University Toronto, ON M5S 3H8, Canada
[10] CNRS, IRAP, F-31028 Toulouse 4, France
[11] CALTECH, Pasadena, CA 91125 USA
[12] Univ Cambridge, DAMTP, Ctr Theoret Cosmol, Cambridge CB3 0WA, England
[13] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Cosmol Ctr, Berkeley, CA 94720 USA
[14] CEA Saclay, DSM Irfu SPP, F-91191 Gif Sur Yvette, France
[15] Tech Univ Denmark, Natl Space Inst, DTU Space, DK-2800 Lyngby, Denmark
[16] Univ Geneva, Dept Phys Theor, CH-1211 Geneva 4, Switzerland
[17] Univ Salamanca, Fac Ciencias, Dept Fis Fundamental, E-37008 Salamanca, Spain
[18] Univ Oviedo, Dept Fis, E-33007 Oviedo, Spain
[19] Radboud Univ Nijmegen, Dept Astrophys, IMAPP, NL-6500 GL Nijmegen, Netherlands
[20] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA
[21] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V5Z 1M9, Canada
[22] Univ So Calif, Dept Phys & Astron, Dana & David Dornsife Coll Letter Arts & Sci, Los Angeles, CA 90089 USA
[23] UCL, Dept Phys & Astron, London WC1E 6BT, England
[24] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England
[25] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA
[26] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland
[27] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
[28] Univ Calif Berkeley, Dept Phys, Berkeley, CA USA
[29] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA
[30] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[31] Univ Illinois, Dept Phys, Urbana, IL USA
[32] Univ Padua, Dipartimento Fis & Astron G Galilei, I-35131 Padua, Italy
[33] Univ Ferrara, Dipartimento Fis & Sci Terra, I-44122 Ferrara, Italy
[34] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[35] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[36] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy
[37] Univ Roma Tor Vergata, Dipartmento Fis, I-00133 Rome, Italy
[38] Niels Bohr Inst, Discovery Ctr, DK-2100 Copenhagen, Denmark
[39] Univ La Laguna, Dept Astrofis, Tenerife 38206, Spain
[40] European Space Agcy, ESAC, Planck Sci Off, Madrid 28692, Spain
[41] European Space Agcy, Estec, NL-2201 AZ Noordwijk, Netherlands
[42] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland
[43] Osserv Astron Padova, INAF, I-35122 Padua, Italy
[44] Osserv Astron Roma, INAF, I-00040 Monte Porzio Catone, Italy
[45] Osserv Astron Trieste, INAF, I-34143 Trieste, Italy
[46] INAF Ist Radioastron, I-40129 Bologna, Italy
[47] INAF IASF Bologna, I-20133 Bologna, Italy
[48] INAF IASF Milano, Milan, Italy
[49] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
[50] Univ Roma La Sapienza, Sez Roma 1, Ist Nazl Fis Nucl, I-00185 Rome, Italy
关键词
cosmology: observations; cosmic background radiation; reference systems; relativistic processes; MICROWAVE; DIPOLE; ABERRATION; ANISOTROPY;
D O I
10.1051/0004-6361/201321556
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Our velocity relative to the rest frame of the cosmic microwave background (CMB) generates a dipole temperature anisotropy on the sky which has been well measured for more than 30 years, and has an accepted amplitude of v/c = 1 x 23(-10), or v = 369 km s(-1). In addition to this signal generated by Doppler boosting of the CMB monopole, our motion also modulates and aberrates the CMB temperature fluctuations (as well as every other source of radiation at cosmological distances). This is an order 10 3 e ff ect applied to fluctuations which are already one part in roughly 105, so it is quite small. Nevertheless, it becomes detectable with the all- sky coverage, high angular resolution, and low noise levels of the Planck satellite. Here we report a first measurement of this velocity signature using the aberration and modulation e ff ects on the CMB temperature anisotropies, finding a component in the known dipole direction, (l; b) = (264 ffi; 48 ffi), of 384 km s 1 +/- 78 km s 1 (stat :) +/- 115 km s 1 (syst :). This is a significant confirmation of the expected velocity.
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页数:11
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