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Title: CMB Polarization B -mode Delensing with SPTpol and Herschel

Abstract

Here, we present a demonstration of delensing the observed cosmic microwave background (CMB) Bmode polarization anisotropy. This process of reducing the gravitational-lensing generated B-mode component will become increasingly important for improving searches for the B modes produced by primordial gravitational waves. In this work, we delens B-mode maps constructed from multi-frequency SPTpol observations of a 90 deg2 patch of sky by subtracting a B-mode template constructed from two inputs: SPTpol E-mode maps and a lensing potential map estimated from the Herschel 500 µm map of the CIB. We find that our delensing procedure reduces the measured B-mode power spectrum by 28% in the multipole range 300 < ℓ< 2300; this is shown to be consistent with expectations from theory and simulations and to be robust against systematics. Furthermore, the null hypothesis of no delensing is rejected at 6.9σ. Furthermore, we build and use a suite of realistic simulations to study the general properties of the delensing process and find that the delensing efficiency achieved in this work is limited primarily by the noise in the lensing potential map. We also demonstrate the importance of including realistic experimental non-idealities in the delensing forecasts used to inform instrument and survey-strategy planning ofmore » upcoming lower-noise experiments, such as CMB-S4.« less

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [4];  [5];  [6];  [5];  [7];  [8];  [9];  [10];  [11];  [12];  [4];  [1];  [13]; ORCiD logo [3];  [14];  [15] more »;  [16];  [12]; ORCiD logo [3];  [17];  [18];  [3];  [1];  [4];  [19];  [3];  [20];  [12];  [21];  [3];  [4];  [22];  [2];  [23];  [24];  [1];  [25];  [26];  [27];  [1];  [28];  [4];  [29];  [13];  [30]; ORCiD logo [31];  [32];  [10];  [16];  [33];  [34];  [35];  [36];  [37];  [38];  [39]; ORCiD logo [3];  [39];  [40] « less
  1. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, Dept. of Astronomy and Astrophysics
  2. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology, Dept. of Physics
  3. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  4. National Inst. of Standards and Technology (NIST), Boulder, CO (United States). Quantum Devices Group
  5. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  6. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  7. Calfornia Inst. of Technology and Jet Propulsion Lab., Pasadena, CA (United States)
  8. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, Dept. of Physics, Enrico Fermi Inst.; Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  9. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, Dept. of Astronomy and Astrophysics; Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  10. Univ. of KwaZulu-Natal, Durban (South Africa). Astrophysics & Cosmology Research Unit. School of Mathematics, Statistics & Computer Science
  11. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  12. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics
  13. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, Dept. of Astronomy and Astrophysics; California Inst. of Technology (CalTech), Pasadena, CA (United States)
  14. McGill Univ., Montreal, QC (Canada). Dept. of Physics; Canadian Inst. for Advanced Research (CIFAR), Toronto, ON (Canada)
  15. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, Dept. of Astronomy and Astrophysics; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  16. Univ. of Colorado, Boulder, CO (United States). Dept. of Astrophysical and Planetary Sciences
  17. McGill Univ., Montreal, QC (Canada). Dept. of Physics
  18. Univ. of Colorado, Boulder, CO (United States). Dept. of Astrophysical and Planetary Sciences, Dept. of Physics
  19. Canadian Inst. for Advanced Research (CIFAR), Toronto, ON (Canada); Univ. of Illinois, Urbana-Champaign, IL (United States). Astronomy Dept., Dept. of Physics
  20. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, Dept. of Physics
  21. Univ. of Chicago, IL (United States)
  22. Stanford Univ., CA (United States). Dept. of Physics; SLAC National Accelerator Lab., Menlo Park, CA (United States)
  23. Univ. of California, Davis, CA (United States). Dept. of Physics
  24. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Physics Division
  25. National Inst. of Standards and Technology (NIST), Boulder, CO (United States). Quantum Devices Group; SLAC National Accelerator Lab., Menlo Park, CA (United States)
  26. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics
  27. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, Dept. of Astronomy and Astrophysics, Dept. of Physics, Enrico Fermi Inst.
  28. Univ. of Toronto, ON (Canada). Dunlap Inst. for Astronomy and Astrophysics
  29. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  30. Univ. of Minnesota, Minneapolis, MN (United States). School of Physics and Astronomy
  31. Univ. of Melbourne (Australia). School of Physics
  32. Case Western Reserve Univ., Cleveland, OH (United States). Physics Dept., Center for Education and Research in Cosmology and Astrophysics
  33. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, Enrico Fermi Inst.; School of Art Inst. of Chicago, IL (United States). Liberal Arts Dept.
  34. McGill Univ., Montreal, QC (Canada). Dept. of Physics; Three-Speed Logic, Inc., Vancouver, BC (Canada)
  35. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  36. Univ. of Toronto, ON (Canada). Dunlap Inst. for Astronomy and Astrophysics, Dept. of Astronomy and Astrophysics
  37. Univ. of Illinois, Urbana-Champaign, IL (United States). Astronomy Dept., Dept. of Physics
  38. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
  39. Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  40. California Inst. of Technology (CalTech), La Canada Flintridge, CA (United States). Jet Propulsion Lab.; Rochester Inst. of Technology, NY (United States). Center for Detectors, School of Physics and Astronomy
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); Kavli Institute for Cosmological Physics; Natural Sciences and Engineering Research Council of Canada (NSERC); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
SPT; Herschel
OSTI Identifier:
1393901
Alternate Identifier(s):
OSTI ID: 1346362; OSTI ID: 1394092
Report Number(s):
FERMILAB-PUB-17-039-A-AE-PPD; arXiv:1701.04396
Journal ID: ISSN 1538-4357; 133183
Grant/Contract Number:  
AC02-06CH11357; AC02-07CH11359; PLR-1248097; AST-0956135; AST-1402161; AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 846; Journal Issue: 1; 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; gravitational lensing

Citation Formats

Manzotti, A., Story, K. T., Wu, W. L. K., Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Bock, J. J., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H-M., Citron, R., Conley, A., Crawford, T. M., Crites, A. T., de Haan, T., Dobbs, M. A., Dodelson, S., Everett, W., Gallicchio, J., George, E. M., Gilbert, A., Halverson, N. W., Harrington, N., Henning, J. W., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hoover, S., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Li, D., McMahon, J. J., Meyer, S. S., Mocanu, L. M., 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., Smecher, G., Stark, A. A., Vanderlinde, K., Vieira, J. D., Viero, M. P., Wang, G., Whitehorn, N., Yefremenko, V., and Zemcov, M. CMB Polarization B -mode Delensing with SPTpol and Herschel. United States: N. p., 2017. Web. doi:10.3847/1538-4357/aa82bb.
Manzotti, A., Story, K. T., Wu, W. L. K., Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Bock, J. J., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H-M., Citron, R., Conley, A., Crawford, T. M., Crites, A. T., de Haan, T., Dobbs, M. A., Dodelson, S., Everett, W., Gallicchio, J., George, E. M., Gilbert, A., Halverson, N. W., Harrington, N., Henning, J. W., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hoover, S., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Li, D., McMahon, J. J., Meyer, S. S., Mocanu, L. M., 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., Smecher, G., Stark, A. A., Vanderlinde, K., Vieira, J. D., Viero, M. P., Wang, G., Whitehorn, N., Yefremenko, V., & Zemcov, M. CMB Polarization B -mode Delensing with SPTpol and Herschel. United States. doi:10.3847/1538-4357/aa82bb.
Manzotti, A., Story, K. T., Wu, W. L. K., Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Bock, J. J., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H-M., Citron, R., Conley, A., Crawford, T. M., Crites, A. T., de Haan, T., Dobbs, M. A., Dodelson, S., Everett, W., Gallicchio, J., George, E. M., Gilbert, A., Halverson, N. W., Harrington, N., Henning, J. W., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hoover, S., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Li, D., McMahon, J. J., Meyer, S. S., Mocanu, L. M., 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., Smecher, G., Stark, A. A., Vanderlinde, K., Vieira, J. D., Viero, M. P., Wang, G., Whitehorn, N., Yefremenko, V., and Zemcov, M. Wed . "CMB Polarization B -mode Delensing with SPTpol and Herschel". United States. doi:10.3847/1538-4357/aa82bb. https://www.osti.gov/servlets/purl/1393901.
@article{osti_1393901,
title = {CMB Polarization B -mode Delensing with SPTpol and Herschel},
author = {Manzotti, A. and Story, K. T. and Wu, W. L. K. and Austermann, J. E. and Beall, J. A. and Bender, A. N. and Benson, B. A. and Bleem, L. E. and Bock, J. J. and Carlstrom, J. E. and Chang, C. L. and Chiang, H. C. and Cho, H-M. and Citron, R. and Conley, A. and Crawford, T. M. and Crites, A. T. and de Haan, T. and Dobbs, M. A. and Dodelson, S. and Everett, W. and Gallicchio, J. and George, E. M. and Gilbert, A. and Halverson, N. W. and Harrington, N. and Henning, J. W. and Hilton, G. C. and Holder, G. P. and Holzapfel, W. L. and Hoover, S. and Hou, Z. and Hrubes, J. D. and Huang, N. and Hubmayr, J. and Irwin, K. D. and Keisler, R. and Knox, L. and Lee, A. T. and Leitch, E. M. and Li, D. and McMahon, J. J. and Meyer, S. S. and Mocanu, L. M. and Natoli, T. and Nibarger, J. P. and Novosad, V. and Padin, S. and Pryke, C. and Reichardt, C. L. and Ruhl, J. E. and Saliwanchik, B. R. and Sayre, J. T. and Schaffer, K. K. and Smecher, G. and Stark, A. A. and Vanderlinde, K. and Vieira, J. D. and Viero, M. P. and Wang, G. and Whitehorn, N. and Yefremenko, V. and Zemcov, M.},
abstractNote = {Here, we present a demonstration of delensing the observed cosmic microwave background (CMB) Bmode polarization anisotropy. This process of reducing the gravitational-lensing generated B-mode component will become increasingly important for improving searches for the B modes produced by primordial gravitational waves. In this work, we delens B-mode maps constructed from multi-frequency SPTpol observations of a 90 deg2 patch of sky by subtracting a B-mode template constructed from two inputs: SPTpol E-mode maps and a lensing potential map estimated from the Herschel 500 µm map of the CIB. We find that our delensing procedure reduces the measured B-mode power spectrum by 28% in the multipole range 300 < ℓ< 2300; this is shown to be consistent with expectations from theory and simulations and to be robust against systematics. Furthermore, the null hypothesis of no delensing is rejected at 6.9σ. Furthermore, we build and use a suite of realistic simulations to study the general properties of the delensing process and find that the delensing efficiency achieved in this work is limited primarily by the noise in the lensing potential map. We also demonstrate the importance of including realistic experimental non-idealities in the delensing forecasts used to inform instrument and survey-strategy planning of upcoming lower-noise experiments, such as CMB-S4.},
doi = {10.3847/1538-4357/aa82bb},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 846,
place = {United States},
year = {2017},
month = {8}
}

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    Works referencing / citing this record:

    SPT-3G: A Multichroic Receiver for the South Pole Telescope
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