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Title: A New Limit on CMB Circular Polarization from SPIDER

Here, we present a new upper limit on cosmic microwave background (CMB) circular polarization from the 2015 flight of Spider, a balloon-borne telescope designed to search for B-mode linear polarization from cosmic inflation. Although the level of circular polarization in the CMB is predicted to be very small, experimental limits provide a valuable test of the underlying models. By exploiting the nonzero circular-to-linear polarization coupling of the half-wave plate polarization modulators, data from Spider's 2015 Antarctic flight provide a constraint on Stokes V at 95 and 150 GHz in the range $$33\lt {\ell }\lt 307$$. No other limits exist over this full range of angular scales, and Spider improves on the previous limit by several orders of magnitude, providing 95% C.L. constraints on $${\ell }({\ell }+1){C}_{{\ell }}^{{VV}}/(2\pi )$$ ranging from 141 to 255 μK 2 at 150 GHz for a thermal CMB spectrum. In conclusion, as linear CMB polarization experiments become increasingly sensitive, the techniques described in this paper can be applied to obtain even stronger constraints on circular polarization.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [3] ;  [4] ; ORCiD logo [4] ;  [1] ;  [5] ; ORCiD logo [6] ; ORCiD logo [7] ;  [8] ; ORCiD logo [9] ;  [5] ;  [10] ; ORCiD logo [11] ;  [12] ; ORCiD logo [13] ; ORCiD logo [14] ;  [4] ;  [15] ;  [16] more »;  [4] ;  [17] ;  [18] ; ORCiD logo [10] ; ORCiD logo [3] ;  [16] ;  [19] ;  [20] ;  [21] ;  [22] ;  [6] ; ORCiD logo [23] ; ORCiD logo [4] ;  [24] ;  [4] ;  [25] ;  [22] ;  [21] ; ORCiD logo [22] ;  [22] ;  [26] ;  [6] ;  [27] ;  [11] ; ORCiD logo [28] ;  [20] ;  [1] ;  [21] ; ORCiD logo [11] ;  [6] ;  [29] ;  [4] ;  [5] ; ORCiD logo [2] ;  [22] ;  [21] ; ORCiD logo [4] ;  [21] ;  [11] ;  [3] ;  [4] « less
  1. Case Western Reserve Univ., Cleveland, OH (United States). Physics Dept.
  2. Cardiff Univ., Cardiff (United Kingdom). School of Physics and Astronomy
  3. Univ. of British Columbia, Vancouver, BC (Canada). Dept. of Physics and Astronomy
  4. Princeton Univ., NJ (United States). Dept. of Physics
  5. California Inst. of Technology (CalTech), Pasadena, CA (United States). Division of Physics, Mathematics and Astronomy; California Inst. of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab.
  6. Univ. of Toronto, ON (Canada). Canadian Inst. for Theoretical Astrophysics
  7. Arizona State Univ., Tempe, AZ (United States). School of Earth and Space Exploration
  8. Univ. of KwaZulu-Natal, Durban (South Africa); National Institute for Theoretical Physics (NITheP), KwaZulu-Natal (South Africa)
  9. Imperial College, London (United Kingdom). Blackett Lab.
  10. Stockholm Univ. (Sweden). Oskar Klein Centre for Cosmoparticle Physics, Dept. of Physics
  11. Univ. of Oslo (Norway). Inst. of Theoretical Astrophysics
  12. Univ. of Toronto, ON (Canada). Canadian Inst. for Theoretical Astrophysics; Univ. of Toronto, ON (Canada). Dept. of Astronomy and Astrophysics
  13. Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Physics; Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Astronomy
  14. Univ. of Toronto, ON (Canada). Dept. of Astronomy and Astrophysics; National Radio Astronomy Observatory, Charlottesville, NC (United States)
  15. Stockholm Univ. (Sweden). Oskar Klein Centre for Cosmoparticle Physics, Dept. of Physics; Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics
  16. Univ. of Toronto, ON (Canada). Dept. of Physics
  17. Johns Hopkins Univ., Baltimore, MD (United States). Department of Physics and Astronomy; NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  18. Univ. Paris Diderot, Sorbonne Paris Cite (France)
  19. Pennsylvania State Univ., University Park, PA (United States). Dept of Astronomy and Astrophysics
  20. National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
  21. California Inst. of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab.
  22. California Inst. of Technology (CalTech), Pasadena, CA (United States). Division of Physics, Mathematics and Astronomy
  23. Stanford Univ., CA (United States). Dept. of Physics; SLAC National Accelerator Lab., Menlo Park, CA (United States)
  24. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  25. Princeton Univ., NJ (United States). Dept. of Physics; Univ. of Toronto, ON (Canada). Dept. of Astronomy and Astrophysics; Princeton Univ., NJ (United States). Dept. of Mechanical and Aerospace Engineering
  26. Univ. of Toronto, ON (Canada). Dept. of Astronomy and Astrophysics; Univ. of Toronto, ON (Canada). Dept. of Physics
  27. Univ. of Toronto, ON (Canada). Dept. of Astronomy and Astrophysics
  28. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics
  29. Max Planck Inst. for Astronomy, Heidelberg, (Germany); Astrophysics, Instrumentation and Modelling (AIM) Lab., Gif-sur-Yvette Cedex (France) ; Univ. Paris Diderot, Paris (France)
Publication Date:
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 844; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmic background radiation
OSTI Identifier:
1390288