A Measurement of the CMB E-mode Angular Power Spectrum at Subdegree Scales from 670 Square Degrees of POLARBEAR Data

被引:26
作者
Adachi, S. [1 ]
Aguilar Faundez, M. A. O. [2 ,3 ]
Arnold, K. [4 ]
Baccigalupi, C. [5 ,6 ,7 ]
Barron, D. [8 ]
Beck, D. [9 ]
Bianchini, F. [10 ]
Chapman, S. [11 ]
Cheung, K. [12 ]
Chinone, Y. [13 ,14 ]
Crowley, K. [12 ]
Dobbs, M. [15 ,16 ]
El Bouhargani, H. [17 ]
Elleflot, T. [18 ]
Errard, J. [17 ]
Fabbian, G. [19 ]
Feng, C. [20 ]
Fujino, T. [21 ]
Galitzki, N. [4 ]
Goeckner-Wald, N. [9 ,12 ]
Groh, J. [12 ]
Hall, G. [22 ]
Hasegawa, M. [23 ]
Hazumi, M. [14 ,23 ,24 ,25 ]
Hirose, H. [26 ]
Jaffe, A. H. [27 ]
Jeong, O. [12 ]
Kaneko, D. [14 ]
Katayama, N. [14 ]
Keating, B. [4 ]
Kikuchi, S. [21 ]
Kisner, T. [28 ]
Kusaka, A. [13 ,18 ,29 ,30 ]
Lee, A. T. [12 ,18 ]
Leon, D. [4 ]
Linder, E. [18 ,31 ]
Lowry, L. N. [4 ]
Matsuda, F. [14 ]
Matsumura, T. [14 ]
Minami, Y. [23 ]
Navaroli, M. [4 ]
Nishino, H. [13 ]
Pham, A. T. P. [10 ]
Poletti, D. [5 ,6 ,7 ]
Reichardt, C. L. [10 ]
Segawa, Y. [23 ,25 ]
Siritanasak, P. [4 ,32 ]
Tajima, O. [1 ]
Takakura, S. [14 ]
Takatori, S. [23 ,25 ]
机构
[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[3] Univ Chile, FCFM, Dept Fis, Blanco Encalada 2008, Santiago, Chile
[4] Univ Calif San Diego, Dept Phys, San Diego, CA 92093 USA
[5] Int Sch Adv Studies SISSA, Via Bonomea 265, I-34136 Trieste, Italy
[6] Inst Fundamental Phys Universe IFPU, Via Beirut 2, I-34151 Grignano, TS, Italy
[7] Ist Nazl Fis Nucl, Natl Inst Nucl Phys, Sez Trieste, Via Valerio 2, I-34127 Trieste, Italy
[8] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA
[9] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
[10] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia
[11] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 4R2, Canada
[12] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[13] Univ Tokyo, Res Ctr Early Universe, Sch Sci, Tokyo 1130033, Japan
[14] Univ Tokyo, Kavli Inst Phys & Math Universe Kavli IPMU, UTIAS, WPI, Kashiwa, Chiba 2778583, Japan
[15] McGill Univ, Phys Dept, Montreal, PQ H3A 0G4, Canada
[16] Canadian Inst Adv Res CIfAR, Toronto, ON M5G 1M1, Canada
[17] Univ Paris, CNRS, Astroparticule & Cosmol, F-75013 Paris, France
[18] Lawrence Berkeley Natl Lab, Phys Div, Berkeley, CA 94720 USA
[19] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England
[20] Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA
[21] Yokohama Natl Univ, Yokohama, Kanagawa 2408501, Japan
[22] Univ Minnesota, Minnesota Inst Astrophys, Minneapolis, MN 55455 USA
[23] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies IPNS, Tsukuba, Ibaraki 3050801, Japan
[24] Japan Aerosp Explorat Agcy JAXA, Inst Space & Astronaut Sci ISAS, Sagamihara, Kanagawa 2520222, Japan
[25] SOKENDAI Grad Univ Adv Studies, Hayama, Kanagawa 2400193, Japan
[26] Yokohama Natl Univ, Grad Sch Engn Sci, Yokohama, Kanagawa 2408501, Japan
[27] Imperial Coll London, Dept Phys, London SW7 2AZ, England
[28] Lawrence Berkeley Natl Lab, Computat Cosmol Ctr, Berkeley, CA 94720 USA
[29] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
[30] Univ Calif Berkeley, Kavli Inst Phys & Math Universe Kavli IPMU, Berkeley Satellite, WPI, Berkeley, CA 94720 USA
[31] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[32] Natl Astron Res Inst Thailand, Chiangmai, Thailand
[33] Univ Calif Berkeley, Radio Astron Lab, Berkeley, CA 94720 USA
基金
美国国家科学基金会; 澳大利亚研究理事会; 英国科学技术设施理事会; 欧洲研究理事会; 加拿大自然科学与工程研究理事会;
关键词
Cosmic microwave background radiation; GRAVITY-WAVES; POLARIZATION;
D O I
10.3847/1538-4357/abbacd
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report a measurement of the E-mode polarization power spectrum of the cosmic microwave background (CMB) using 150 GHz data taken from 2014 July to 2016 December with the POLARBEAR experiment. We reach an effective polarization map noise level of 32 mu K-arcmin across an observation area of 670 square degrees. We measure the EE power spectrum over the angular multipole range 500 <= l < 3000, tracing the third to seventh acoustic peaks with high sensitivity. The statistical uncertainty on E-mode bandpowers is similar to 2.3 mu K-2 at l similar to 1000, with a systematic uncertainty of 0.5 mu K-2. The data are consistent with the standard Lambda CDM cosmological model with a probability-to-exceed of 0.38. We combine recent CMB E-mode measurements and make inferences about cosmological parameters in.CDM as well as in extensions to Lambda CDM. Adding the ground-based CMB polarization measurements to the Planck data set reduces the uncertainty on the Hubble constant by a factor of 1.2 to H-0 = 67.20 +/- 0.57 km s(-1) Mpc(-1). When allowing the number of relativistic species (N-eff) to vary, we find N-eff = 2.94 +/- 0.16, which is in good agreement with the standard value of 3.046. Instead allowing the primordial helium abundance (Y-He) to vary, the data favor Y-He = 0.248 +/- 0.012. This is very close to the expectation of 0.2467 from big bang nucleosynthesis. When varying both Y-He and N-eff, we find N-eff = 2.70 +/- 0.26 and Y-He = 0.262 +/- 0.015.
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页数:13
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