4.7 Article

Cross-correlating Planck CMB lensing with SDSS: lensing-lensing and galaxy-lensing cross-correlations

期刊

出版社

OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw2482

关键词

gravitational lensing: weak; cosmology: observations; large-scale structure of Universe

资金

  1. Department of Energy Early Career Award programme
  2. John Peoples Jr Presidential Fellowship from Carnegie Mellon University
  3. Alfred P. Sloan Foundation
  4. National Science Foundation
  5. US Department of Energy Office of Science
  6. University of Arizona
  7. Brazilian Participation Group
  8. Brookhaven National Laboratory
  9. Carnegie Mellon University
  10. University of Florida
  11. French Participation Group
  12. German Participation Group
  13. Harvard University
  14. Instituto de Astrofisica de Canarias
  15. Michigan State/Notre Dame/JINA Participation Group
  16. Johns Hopkins University
  17. Lawrence Berkeley National Laboratory
  18. Max Planck Institute for Astrophysics
  19. Max Planck Institute for Extraterrestrial Physics
  20. New Mexico State University
  21. New York University
  22. Ohio State University
  23. Pennsylvania State University
  24. University of Portsmouth
  25. Princeton University
  26. Spanish Participation Group
  27. University of Tokyo
  28. University of Utah
  29. Vanderbilt University
  30. University of Virginia
  31. University of Washington
  32. Yale University

向作者/读者索取更多资源

We present results from cross-correlating Planck cosmic microwave background (CMB) lensing maps with the Sloan Digital Sky Survey (SDSS) galaxy lensing shape catalogue and BOSS (Baryon Oscillation Spectroscopic Survey) galaxy catalogues. For galaxy position versus CMB lensing cross-correlations, we measure the convergence signal around the galaxies in configuration space, using the BOSS LOWZ (z similar to 0.30) and CMASS (z similar to 0.57) samples. With fixed Planck 2015 cosmology, doing a joint fit with the galaxy clustering measurement, for the LOWZ (CMASS) sample we find a galaxy bias b(g) = 1.75 +/- 0.04 (1.95 +/- 0.02) and galaxy-matter cross-correlation coefficient r(cc) = 1.0 +/- 0.2 (0.8 +/- 0.1) using 20 < r(p) < 70 h(-1) Mpc, consistent with results from galaxy-galaxy lensing. Using the same scales and including the galaxy-galaxy lensing measurements, we constrain Omega(m) = 0.284 +/- 0.024 and relative calibration bias between the CMB lensing and galaxy lensing to be b(gamma) = 0.82(-0.14)(+0.15). The combination of galaxy lensing and CMB lensing also allows us to measure the cosmological distance ratios (with z(l) similar to 0.3, z(s) similar to 0.5) R = DsDl,*/D*Dl,s = 2.68 +/- 0.29, consistent with predictions from the Planck 2015 cosmology (R = 2.35). We detect the galaxy position-CMB convergence cross-correlation at small scales, r(p) < 1 h(-1) Mpc, and find consistency with lensing by NFW haloes of mass M-h similar to 10(13) h(-1) M-circle dot. Finally, we measure the CMB lensing-galaxy shear cross-correlation, finding an amplitude of A = 0.76 +/- 0.23 (z(eff) = 0.35, theta < 2 degrees) with respect to Planck 2015 Lambda cold dark matter predictions (1 sigma level consistency). We do not find evidence for relative systematics between the CMB and SDSS galaxy lensing.

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