Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data
International audience BICEP1 is a millimeter-wavelength telescope designed specifically to measure the inflationary B-mode polarization of the cosmic microwave background at degree angular scales. We present results from an analysis of the data acquired during three seasons of observations at the S...
Published in: | The Astrophysical Journal |
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ftccsdartic:oai:HAL:insu-03645700v1 2023-11-05T03:45:06+01:00 Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data Barkats, D. Aikin, R. Bischoff, C. Buder, I. Kaufman, J. P. Keating, B. G. Kovac, J. M. Su, M. Ade, P. A. R. Battle, J. O. Bierman, E. M. Bock, J. J. Chiang, H. C. Dowell, C. D. Duband, L. Filippini, J. Hivon, E. F. Holzapfel, W. L. Hristov, V. V. Jones, W. C. Kuo, C. L. Leitch, E. M. Mason, P. V. Matsumura, T. Nguyen, H. T. Ponthieu, N. Pryke, C. Richter, S. Rocha, G. Sheehy, C. Kernasovskiy, S. S. Takahashi, Y. D. Tolan, J. E. Yoon, K. W. Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2014 https://insu.hal.science/insu-03645700 https://doi.org/10.1088/0004-637X/783/2/67 en eng HAL CCSD American Astronomical Society info:eu-repo/semantics/altIdentifier/arxiv/1310.1422 info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/783/2/67 insu-03645700 https://insu.hal.science/insu-03645700 ARXIV: 1310.1422 BIBCODE: 2014ApJ.783.67B doi:10.1088/0004-637X/783/2/67 ISSN: 0004-637X EISSN: 1538-4357 The Astrophysical Journal https://insu.hal.science/insu-03645700 The Astrophysical Journal, 2014, 783, ⟨10.1088/0004-637X/783/2/67⟩ cosmic background radiation cosmology: observations gravitational waves inflation polarization Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.1088/0004-637X/783/2/67 2023-10-07T23:05:35Z International audience BICEP1 is a millimeter-wavelength telescope designed specifically to measure the inflationary B-mode polarization of the cosmic microwave background at degree angular scales. We present results from an analysis of the data acquired during three seasons of observations at the South Pole (2006-2008). This work extends the two-year result published in Chiang et al., with additional data from the third season and relaxed detector-selection criteria. This analysis also introduces a more comprehensive estimation of band power window functions, improved likelihood estimation methods, and a new technique for deprojecting monopole temperature-to-polarization leakage that reduces this class of systematic uncertainty to a negligible level. We present maps of temperature, E- and B-mode polarization, and their associated angular power spectra. The improvement in the map noise level and polarization spectra error bars are consistent with the 52% increase in integration time relative to Chiang et al. We confirm both self-consistency of the polarization data and consistency with the two-year results. We measure the angular power spectra at 21 <= l <= 335 and find that the EE spectrum is consistent with Lambda cold dark matter cosmology, with the first acoustic peak of the EE spectrum now detected at 15σ. The BB spectrum remains consistent with zero. From B-modes only, we constrain the tensor-to-scalar ratio to r = 0.03^{+0.27}_{-0.23}, or r < 0.70 at 95% confidence level. Article in Journal/Newspaper South pole Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) The Astrophysical Journal 783 2 67 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
cosmic background radiation cosmology: observations gravitational waves inflation polarization Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics [SDU]Sciences of the Universe [physics] |
spellingShingle |
cosmic background radiation cosmology: observations gravitational waves inflation polarization Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics [SDU]Sciences of the Universe [physics] Barkats, D. Aikin, R. Bischoff, C. Buder, I. Kaufman, J. P. Keating, B. G. Kovac, J. M. Su, M. Ade, P. A. R. Battle, J. O. Bierman, E. M. Bock, J. J. Chiang, H. C. Dowell, C. D. Duband, L. Filippini, J. Hivon, E. F. Holzapfel, W. L. Hristov, V. V. Jones, W. C. Kuo, C. L. Leitch, E. M. Mason, P. V. Matsumura, T. Nguyen, H. T. Ponthieu, N. Pryke, C. Richter, S. Rocha, G. Sheehy, C. Kernasovskiy, S. S. Takahashi, Y. D. Tolan, J. E. Yoon, K. W. Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data |
topic_facet |
cosmic background radiation cosmology: observations gravitational waves inflation polarization Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics [SDU]Sciences of the Universe [physics] |
description |
International audience BICEP1 is a millimeter-wavelength telescope designed specifically to measure the inflationary B-mode polarization of the cosmic microwave background at degree angular scales. We present results from an analysis of the data acquired during three seasons of observations at the South Pole (2006-2008). This work extends the two-year result published in Chiang et al., with additional data from the third season and relaxed detector-selection criteria. This analysis also introduces a more comprehensive estimation of band power window functions, improved likelihood estimation methods, and a new technique for deprojecting monopole temperature-to-polarization leakage that reduces this class of systematic uncertainty to a negligible level. We present maps of temperature, E- and B-mode polarization, and their associated angular power spectra. The improvement in the map noise level and polarization spectra error bars are consistent with the 52% increase in integration time relative to Chiang et al. We confirm both self-consistency of the polarization data and consistency with the two-year results. We measure the angular power spectra at 21 <= l <= 335 and find that the EE spectrum is consistent with Lambda cold dark matter cosmology, with the first acoustic peak of the EE spectrum now detected at 15σ. The BB spectrum remains consistent with zero. From B-modes only, we constrain the tensor-to-scalar ratio to r = 0.03^{+0.27}_{-0.23}, or r < 0.70 at 95% confidence level. |
author2 |
Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Barkats, D. Aikin, R. Bischoff, C. Buder, I. Kaufman, J. P. Keating, B. G. Kovac, J. M. Su, M. Ade, P. A. R. Battle, J. O. Bierman, E. M. Bock, J. J. Chiang, H. C. Dowell, C. D. Duband, L. Filippini, J. Hivon, E. F. Holzapfel, W. L. Hristov, V. V. Jones, W. C. Kuo, C. L. Leitch, E. M. Mason, P. V. Matsumura, T. Nguyen, H. T. Ponthieu, N. Pryke, C. Richter, S. Rocha, G. Sheehy, C. Kernasovskiy, S. S. Takahashi, Y. D. Tolan, J. E. Yoon, K. W. |
author_facet |
Barkats, D. Aikin, R. Bischoff, C. Buder, I. Kaufman, J. P. Keating, B. G. Kovac, J. M. Su, M. Ade, P. A. R. Battle, J. O. Bierman, E. M. Bock, J. J. Chiang, H. C. Dowell, C. D. Duband, L. Filippini, J. Hivon, E. F. Holzapfel, W. L. Hristov, V. V. Jones, W. C. Kuo, C. L. Leitch, E. M. Mason, P. V. Matsumura, T. Nguyen, H. T. Ponthieu, N. Pryke, C. Richter, S. Rocha, G. Sheehy, C. Kernasovskiy, S. S. Takahashi, Y. D. Tolan, J. E. Yoon, K. W. |
author_sort |
Barkats, D. |
title |
Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data |
title_short |
Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data |
title_full |
Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data |
title_fullStr |
Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data |
title_full_unstemmed |
Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data |
title_sort |
degree-scale cosmic microwave background polarization measurements from three years of bicep1 data |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://insu.hal.science/insu-03645700 https://doi.org/10.1088/0004-637X/783/2/67 |
genre |
South pole |
genre_facet |
South pole |
op_source |
ISSN: 0004-637X EISSN: 1538-4357 The Astrophysical Journal https://insu.hal.science/insu-03645700 The Astrophysical Journal, 2014, 783, ⟨10.1088/0004-637X/783/2/67⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/1310.1422 info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/783/2/67 insu-03645700 https://insu.hal.science/insu-03645700 ARXIV: 1310.1422 BIBCODE: 2014ApJ.783.67B doi:10.1088/0004-637X/783/2/67 |
op_doi |
https://doi.org/10.1088/0004-637X/783/2/67 |
container_title |
The Astrophysical Journal |
container_volume |
783 |
container_issue |
2 |
container_start_page |
67 |
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1781706505944301568 |