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Title: A Measurement of the Cosmic Microwave Background B-mode Polarization Power Spectrum at Subdegree Scales from Two Years of POLARBEAR Data

Abstract

We report an improved measurement of the cosmic microwave background B-mode polarization power spectrum with the Polarbear experiment at 150 GHz. By adding new data collected during the second season of observations (2013–2014) to re-analyzed data from the first season (2012–2013), we have reduced twofold the band-power uncertainties. The band powers are reported over angular multipoles $$500\leqslant {\ell }\leqslant 2100$$, where the dominant B-mode signal is expected to be due to the gravitational lensing of E-modes. We reject the null hypothesis of no B-mode polarization at a confidence of 3.1σ including both statistical and systematic uncertainties. Here, we test the consistency of the measured B-modes with the Λ Cold Dark Matter (ΛCDM) framework by fitting for a single lensing amplitude parameter A L relative to the Planck 2015 best-fit model prediction. We obtain $${A}_{L}={0.60}_{-0.24}^{+0.26}(\mathrm{stat}{)}_{-0.04}^{+0.00}(\mathrm{inst})$$ ± 0.14(foreground) ± 0.04(multi), where $${A}_{L}=1$$ is the fiducial ΛCDM value.

Authors:
ORCiD logo [1];  [2];  [3]; ORCiD logo [4];  [5];  [6];  [7]; ORCiD logo [8];  [9];  [10];  [11]; ORCiD logo [12];  [4];  [13];  [9];  [14];  [15];  [4];  [7]; ORCiD logo [16] more »;  [17];  [18];  [19];  [4];  [14];  [13];  [13];  [20];  [21];  [22];  [23];  [24];  [25];  [4];  [26];  [27]; ORCiD logo [28];  [13];  [15];  [15];  [4];  [10];  [10];  [29];  [30];  [7];  [31];  [32] « less
  1. Cardiff Univ., (UK). School of Physics
  2. Univ. de Chile, Santiago (Chile). Dept. de Fisica
  3. SOKENDAI, Kanagawa (Japan); High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
  4. Univ. of California, San Diego, CA (United States). Dept. of Physics
  5. The International School for Advanced Studies SISSA, Triste (Italy); The National Inst. for Nuclear Physics INFN, Triste (Italy)
  6. Univ. of California, Berkeley, CA (United States). Space Sciences Lab.
  7. Univ. Paris Diderot, Sorbonne Paris Cite (France). AstroParticule et Cosmologie
  8. Univ. of Melbourne (Australia). School of Physics
  9. Pontificia Univ. Catolica de Chile, Santiago (Chile). Centro de Astro-Ingenieria
  10. Univ. of California, Berkeley, CA (United States). Space Sciences Lab.; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Computational Cosmology Center
  11. Dalhousie Univ., Halifax, NS (Canada). Dept. of Physics and Atmospheric Science
  12. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Univ. of Tokyo (Japan). Kavli IPMU
  13. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  14. McGill Univ., Montreal, QC (Canada). Dept of Physics
  15. Univ. of Tokyo (Japan). Kavli IPMU
  16. Univ. Paris-Sud, Orsay (France). Inst. d'Astrophysique Spatiale
  17. Flatiron Inst., New York, NY (United States). Center for Computational Astrophysics; Imperial College, London (United Kingdom). Blackett Lab., Dept. of Physics
  18. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
  19. Yokohama National Univ. (Japan)
  20. Harvard Univ., Cambridge, MA (United States). Harvard-Smithsonian Center for Astrophysics
  21. Univ. of Colorado, Boulder, CO (United States). Dept. of Astrophysical and Planetary Sciences; Univ. of Colorado, Boulder, CO (United States). Dept. of Physics; Univ. of Colorado, Boulder, CO (United States). Dept. of Astrophysical and Planetary Sciences
  22. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); Tohoku Univ., Sendai (Japan). Astronomical Inst., Graduate School of Science
  23. SOKENDAI (Japan); High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
  24. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); SOKENDAI (Japan); Univ. of Tokyo (Japan). Kavli IMPU; Japan Aerospace Exploration Agency, Tsukuba (Japan). Inst. of Space and Astronautical Science
  25. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Physics Dept.
  26. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); Academia Sinica, Taipei (Taiwan). Inst. of Physics
  27. Univ. of Colorado, Boulder, CO (United States) Center for Astrophysics and Space Astronomy; Univ. of Colorado, Boulder, CO (United States). Dept. of Physics
  28. Imperial College, London (United Kingdom). Blackett Lab., Dept. of Physics
  29. The International School for Advanced Studies SISSA, Triste (Italy)
  30. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Physics Division; Univ. of Tokyo (Japan). Dept. of Physics
  31. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Physics Division; Univ. of California, Berkeley, CA (United States). Radio Astronomy Lab.
  32. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics (KICP); Univ. of Chicago, IL (United States). Dept. of Astronomy and Astrophysics. et al.
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
The POLARBEAR Collaboration
OSTI Identifier:
1524240
Alternate Identifier(s):
OSTI ID: 1525246
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 848; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmic background radiation; cosmology: observations; large-scale structure of universe

Citation Formats

Ade, P. A. R., Aguilar, M., Akiba, Y., Arnold, K., Baccigalupi, C., Barron, D., Beck, D., Bianchini, F., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Crowley, K., Cukierman, A., Dünner, R., Dobbs, M., Ducout, A., Elleflot, T., Errard, J., Fabbian, G., Feeney, S. M., Feng, C., Fujino, T., Galitzki, N., Gilbert, A., Goeckner-Wald, N., Groh, J. C., Hall, G., Halverson, N., Hamada, T., Hasegawa, M., Hazumi, M., Hill, C. A., Howe, L., Inoue, Y., Jaehnig, G., Jaffe, A. H., Jeong, O., Kaneko, D., Katayama, N., Keating, B., Keskitalo, R., Kisner, T., Krachmalnicoff, N., Kusaka, A., Jeune, M. Le, Lee, A. T., and Leitch, E. M. A Measurement of the Cosmic Microwave Background B-mode Polarization Power Spectrum at Subdegree Scales from Two Years of POLARBEAR Data. United States: N. p., 2017. Web. doi:10.3847/1538-4357/aa8e9f.
Ade, P. A. R., Aguilar, M., Akiba, Y., Arnold, K., Baccigalupi, C., Barron, D., Beck, D., Bianchini, F., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Crowley, K., Cukierman, A., Dünner, R., Dobbs, M., Ducout, A., Elleflot, T., Errard, J., Fabbian, G., Feeney, S. M., Feng, C., Fujino, T., Galitzki, N., Gilbert, A., Goeckner-Wald, N., Groh, J. C., Hall, G., Halverson, N., Hamada, T., Hasegawa, M., Hazumi, M., Hill, C. A., Howe, L., Inoue, Y., Jaehnig, G., Jaffe, A. H., Jeong, O., Kaneko, D., Katayama, N., Keating, B., Keskitalo, R., Kisner, T., Krachmalnicoff, N., Kusaka, A., Jeune, M. Le, Lee, A. T., & Leitch, E. M. A Measurement of the Cosmic Microwave Background B-mode Polarization Power Spectrum at Subdegree Scales from Two Years of POLARBEAR Data. United States. doi:10.3847/1538-4357/aa8e9f.
Ade, P. A. R., Aguilar, M., Akiba, Y., Arnold, K., Baccigalupi, C., Barron, D., Beck, D., Bianchini, F., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Crowley, K., Cukierman, A., Dünner, R., Dobbs, M., Ducout, A., Elleflot, T., Errard, J., Fabbian, G., Feeney, S. M., Feng, C., Fujino, T., Galitzki, N., Gilbert, A., Goeckner-Wald, N., Groh, J. C., Hall, G., Halverson, N., Hamada, T., Hasegawa, M., Hazumi, M., Hill, C. A., Howe, L., Inoue, Y., Jaehnig, G., Jaffe, A. H., Jeong, O., Kaneko, D., Katayama, N., Keating, B., Keskitalo, R., Kisner, T., Krachmalnicoff, N., Kusaka, A., Jeune, M. Le, Lee, A. T., and Leitch, E. M. Fri . "A Measurement of the Cosmic Microwave Background B-mode Polarization Power Spectrum at Subdegree Scales from Two Years of POLARBEAR Data". United States. doi:10.3847/1538-4357/aa8e9f. https://www.osti.gov/servlets/purl/1524240.
@article{osti_1524240,
title = {A Measurement of the Cosmic Microwave Background B-mode Polarization Power Spectrum at Subdegree Scales from Two Years of POLARBEAR Data},
author = {Ade, P. A. R. and Aguilar, M. and Akiba, Y. and Arnold, K. and Baccigalupi, C. and Barron, D. and Beck, D. and Bianchini, F. and Boettger, D. and Borrill, J. and Chapman, S. and Chinone, Y. and Crowley, K. and Cukierman, A. and Dünner, R. and Dobbs, M. and Ducout, A. and Elleflot, T. and Errard, J. and Fabbian, G. and Feeney, S. M. and Feng, C. and Fujino, T. and Galitzki, N. and Gilbert, A. and Goeckner-Wald, N. and Groh, J. C. and Hall, G. and Halverson, N. and Hamada, T. and Hasegawa, M. and Hazumi, M. and Hill, C. A. and Howe, L. and Inoue, Y. and Jaehnig, G. and Jaffe, A. H. and Jeong, O. and Kaneko, D. and Katayama, N. and Keating, B. and Keskitalo, R. and Kisner, T. and Krachmalnicoff, N. and Kusaka, A. and Jeune, M. Le and Lee, A. T. and Leitch, E. M.},
abstractNote = {We report an improved measurement of the cosmic microwave background B-mode polarization power spectrum with the Polarbear experiment at 150 GHz. By adding new data collected during the second season of observations (2013–2014) to re-analyzed data from the first season (2012–2013), we have reduced twofold the band-power uncertainties. The band powers are reported over angular multipoles $500\leqslant {\ell }\leqslant 2100$, where the dominant B-mode signal is expected to be due to the gravitational lensing of E-modes. We reject the null hypothesis of no B-mode polarization at a confidence of 3.1σ including both statistical and systematic uncertainties. Here, we test the consistency of the measured B-modes with the Λ Cold Dark Matter (ΛCDM) framework by fitting for a single lensing amplitude parameter A L relative to the Planck 2015 best-fit model prediction. We obtain ${A}_{L}={0.60}_{-0.24}^{+0.26}(\mathrm{stat}{)}_{-0.04}^{+0.00}(\mathrm{inst})$ ± 0.14(foreground) ± 0.04(multi), where ${A}_{L}=1$ is the fiducial ΛCDM value.},
doi = {10.3847/1538-4357/aa8e9f},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 848,
place = {United States},
year = {2017},
month = {10}
}

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