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Forecasting ground-based sensitivity to the Rayleigh scattering of the CMB in the presence of astrophysical foregrounds

Journal Article · · Physical Review. D.
 [1];  [2];  [3];  [2];  [4];  [1];  [1];  [5];  [1];  [6];  [7];  [8];  [4]
  1. University of Chicago, IL (United States); University of Chicago, IL (United States). Kavli Institute for Cosmological Physics (KICP)
  2. University of Chicago, IL (United States); University of Chicago, IL (United States). Kavli Institute for Cosmological Physics (KICP); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States); University of Chicago, IL (United States). Kavli Inst. for Cosmological Physics (KICP)
  4. Stanford University, CA (United States). Kavli Institute for Particle Astrophysics & Cosmology; SLAC National Accelerator Laboratory, Menlo Park, CA (United States)
  5. Argonne National Laboratory (ANL), Lemont, IL (United States)
  6. Argonne National Laboratory (ANL), Argonne, IL (United States)
  7. National Center for Supercomputing Applications, Urbana, IL (United States)
  8. University of Melbourne, Parkville, VIC (Australia)
+ Show Author Affiliations
The Rayleigh scattering of cosmic microwave background (CMB) photons off the neutral hydrogen produced during recombination effectively creates an additional scattering surface after recombination that encodes new cosmological information, including the expansion and ionization history of the universe. A first detection of Rayleigh scattering is a tantalizing target for next-generation CMB experiments. We have developed a Rayleigh scattering forecasting pipeline that includes instrumental effects, atmospheric noise, and astrophysical foregrounds (e.g., Galactic dust, cosmic infrared background, or CIB, and the thermal Sunyaev-Zel'dovich effect). We forecast the Rayleigh scattering detection significance for several upcoming ground -based experiments, including SPT-3G+, Simons Observatory, CCAT-prime, and CMB-S4, and examine the limitations from atmospheric and astrophysical foregrounds as well as potential mitigation strategies. When combined with Planck data, here we estimate that the ground-based experiments will detect Rayleigh scattering with a significance between 1.6 and 3.7, primarily limited by atmospheric noise and the CIB.
Research Organization:
Argonne National Laboratory (ANL), Lemont, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
Australian Research Council; National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), High Energy Physics (HEP); University of Chicago
Grant/Contract Number:
AC02-06CH11357; AC02-07CH11359; AC02-76SF00515
OSTI ID:
1960376
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 6 Vol. 106; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmic microwave background
telescopes