MEASUREMENTS OF SUB-DEGREE B-MODE POLARIZATION IN THE COSMIC MICROWAVE BACKGROUND FROM 100 SQUARE DEGREES OF SPTPOL DATA
Open accessAbstract
We present a measurement of the B -mode polarization power spectrum (the BB spectrum) from 100 of sky observed with SPTpol, a polarization-sensitive receiver currently installed on the South Pole Telescope. The observations used in this work were taken during 2012 and early 2013 and include data in spectral bands centered at 95 and 150 GHz. We report the BB spectrum in five bins in multipole space, spanning the range , and for three spectral combinations: 95 GHz × 95 GHz, 95 GHz × 150 GHz, and 150 GHz × 150 GHz. We subtract small (<0.5 σ in units of statistical uncertainty) biases from these spectra and account for the uncertainty in those biases. The resulting power spectra are inconsistent with zero power but consistent with predictions for the BB spectrum arising from the gravitational lensing of E -mode polarization. If we assume no other source of BB power besides lensed B modes, we determine a preference for lensed B modes of 4.9 σ . After marginalizing over tensor power and foregrounds, namely, polarized emission from galactic dust and extragalactic sources, this significance is 4.3 σ . Fitting for a single parameter, , that multiplies the predicted lensed B -mode spectrum, and marginalizing over tensor power and foregrounds, we find , indicating that our measured spectra are consistent with the signal expected from gravitational lensing. The data presented here provide the best measurement to date of the B -mode power spectrum on these angular scales.
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CMB lensing and its effects have been measured by various experiments.
“CMB lensing and its effects have been measured by various experiments (Hanson et al. 2013; van Engelen et al. 2012; Keisler et al. 2015; Ade et al. 2014f, g, e; van Engelen et al. 2015; Das et al. 2011; Ade et al. 2014d, 2016c).”
From Testing general relativity in cosmology (2019) · cites this paper as Keisler et al. 2015
A number of CMB lensing analyses have provided useful constraints on various cosmological parameters.
“A number of analyses of CMB Lensing have provided already useful constraints on various cosmological parameters, see for example Hanson et al. (2013), van Engelen et al. (2012), Keisler et al. (2015), Ade et al. (2014f, 2014g, 2014e), van Engelen et al. (2015), Das et al. (2011) and Ade et al. (2014d, 2016c).”
From Testing general relativity in cosmology (2019) · cites this paper as Keisler et al. 2015
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Testing general relativity in cosmology
Ishak, M. (2019) · Living Reviews in Relativity · doi:10.1007/s41114-018-0017-4 · Cited by 449 · see citing works
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- Authors
- Keisler, R., Hoover, S., Harrington, N., Henning, J. W., Ade, P. A. R., Aird, K. A., Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H.-M., Citron, R., Crawford, T. M., Crites, A. T., de Haan, T., Dobbs, M. A., Everett, W., Gallicchio, J., Gao, J., George, E. M., Gilbert, A., Halverson, N. W., Hanson, D., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Knox, L., Lee, A. T., Leitch, E. M., Li, D., Luong-Van, D., Marrone, D. P., McMahon, J. J., Mehl, J., Meyer, S. S., Mocanu, L., Natoli, T., Nibarger, J. P., Novosad, V., Padin, S., Pryke, C., Reichardt, C. L., Ruhl, J. E., Saliwanchik, B. R., Sayre, J. T., Schaffer, K. K., Shirokoff, E., Smecher, G., Stark, A. A., Story, K. T., Tucker, C., Vanderlinde, K., Vieira, J. D., Wang, G., Whitehorn, N., Yefremenko, V., & Zahn, O.
- Affiliations
- Lawrence Berkeley National Laboratory (US)
- ORCID
- Keisler, R.
- Ade, P. A. R.
- Aird, K. A.
- Bender, A. N.
- Benson, B. A.
- Bleem, L. E.
- Carlstrom, J. E.
- Chang, C. L.
- Chiang, H. C.
- Cho, H-M.
- Citron, R.
- Crawford, T. M.
- Crites, A. T.
- Dobbs, M. A.
- Halverson, N. W.
- Holzapfel, W. L.
- Irwin, K. D.
- Lee, A. T.
- Leitch, E. M.
- Li, D.
- Marrone, D. P.
- Meyer, S. S.
- Natoli, T.
- Novosad, V.
- Padin, S.
- Reichardt, C. L.
- Ruhl, J. E.
- Saliwanchik, B. R.
- Shirokoff, E.
- Story, K. T.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2015-07-09
- Volume
- 807
- Issue
- 2
- Pages
- 151
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1680104732
- Cited by
- 146
- References
- 4
- Citations by year
- 2026: 1 · 2024: 1 · 2023: 6 · 2022: 4 · 2021: 6 · 2020: 16 · 2019: 19 · 2018: 28 · 2017: 23 · 2016: 31 · 2015: 11
- FWCI
- 17.65
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- The Astrophysical Journal (publishedVersion)
- ORCA Online Research @Cardiff (Cardiff University) (acceptedVersion)
- arXiv (Cornell University) (submittedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- CaltechAUTHORS (California Institute of Technology) (submittedVersion)
- Minerva Access (University of Melbourne) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation (0114422, DEAC02-05CH11231, 1248097, 1402161, DE-AC02–06CH11357, 0956135)
- U.S. Department of Energy (-AC02-05CH11231, AC02‐06CH11357, 05CH11231, DE AC02 05CH11231, AC02-07CH11359, 06CH11357, DE-AC02-)
- Gordon and Betty Moore Foundation
- University of Chicago (DE-AC02-06CH11357)
- McGill University
- Canada Research Chairs
- Office of Science (AC02‐06CH11357, AC02-05CH11231, DE-AC02, 05CH11231, 06CH11357, DE-AC02-06CH11357)
- University of Colorado Boulder (DE-AC02-06CH11357)
- Natural Sciences and Engineering Research Council of Canada (DE-AC02-06CH11357, DE-AC02-05CH11231)
- Argonne National Laboratory (DE- AC02-06-CH11357, DE-AC02, AC02–06CH11357, DE-AC02-05CH11231, 06CH11357)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Dark Matter and Cosmic Phenomena
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Astrophysics and Cosmic Phenomena
- Keywords
- B-mode polarization, cosmic microwave background, gravitational lensing, E-mode polarization, SPTpol, South Pole Telescope, tensor powers, foreground subtraction, galactic dust, extragalactic foregrounds
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