skip to main content

DOE PAGESDOE PAGES

Title: Weak lensing by galaxy troughs in DES Science Verification data

In this study, we measure the weak lensing shear around galaxy troughs, i.e. the radial alignment of background galaxies relative to underdensities in projections of the foreground galaxy field over a wide range of redshift in Science Verification data from the Dark Energy Survey. Our detection of the shear signal is highly significant (10σ–15σ for the smallest angular scales) for troughs with the redshift range z ϵ [0.2, 0.5] of the projected galaxy field and angular diameters of 10 arcmin…1°. These measurements probe the connection between the galaxy, matter density, and convergence fields. By assuming galaxies are biased tracers of the matter density with Poissonian noise, we find agreement of our measurements with predictions in a fiducial Λ cold dark matter model. The prediction for the lensing signal on large trough scales is virtually independent of the details of the underlying model for the connection of galaxies and matter. Our comparison of the shear around troughs with that around cylinders with large galaxy counts is consistent with a symmetry between galaxy and matter over- and underdensities. In addition, we measure the two-point angular correlation of troughs with galaxies which, in contrast to the lensing signal, is sensitive to galaxy biasmore » on all scales. The lensing signal of troughs and their clustering with galaxies is therefore a promising probe of the statistical properties of matter underdensities and their connection to the galaxy field.« less
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ; ;  [2] ;  [6] ;  [1] ;  [7] ;  [8] ;  [1] ;  [9] ;  [10] ;  [11] ;  [12] ;  [13] ;  [14] more »;  [15] ;  [16] ;  [17] ;  [6] ;  [18] ;  [5] ;  [19] ;  [20] ;  [10] ;  [18] ;  [14] ;  [8] ;  [3] ;  [21] ;  [22] ;  [17] ;  [6] ;  [23] ;  [21] ;  [24] ;  [25] ;  [14] ;  [25] ;  [18] ;  [26] ;  [27] ;  [4] ;  [14] ;  [17] ;  [28] ;  [29] ;  [30] ;  [14] ;  [31] ;  [32] ;  [33] ;  [14] ;  [18] ;  [24] ;  [34] ;  [35] ;  [5] ;  [36] ;  [31] ;  [37] ;  [38] ;  [39] ;  [14] ;  [21] ;  [40] ;  [41] ;  [42] ;  [8] ;  [5] ;  [43] ;  [14] ;  [31] ;  [44] ;  [45] ;  [14] ;  [46] ;  [31] ;  [47] ;  [29] ;  [48] ;  [49] ;  [45] ;  [8] ;  [50] ;  [29] ;  [10] « less
  1. Univ.-Sternwarte, Fakultat fur Physik, Ludwig-Maximilians Univ. Munchen, Munchen (Germany); Max Planck Institute for Extraterrestrial Physics, Garching (Germany)
  2. ETH Zurich, Zurich (Switzerland)
  3. Univ. of Portsmouth, Portsmouth (United Kingdom)
  4. Univ. Autonoma de Barcelona, Barcelona (Spain)
  5. Univ. of Pennsylvania, Philadelphia, PA (United States)
  6. Stanford Univ., Stanford, CA (United States)
  7. Univ. of Arizona, Tucson, AZ (United States)
  8. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  9. Brookhaven National Lab. (BNL), Upton, NY (United States)
  10. Univ. of Manchester, Manchester (United Kingdom)
  11. Argonne National Lab. (ANL), Lemont, IL (United States)
  12. Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, La Serena (Chile)
  13. Univ. College London, London (United Kingdom); Rhodes Univ., Grahamstown (South Africa)
  14. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  15. Princeton Univ., Princeton, NJ (United States)
  16. Univ. of Cambridge, Cambridge (United Kingdom)
  17. Institut de Ciencies de l'Espai, Barcelona (Spain)
  18. Univ. College London, London (United Kingdom)
  19. Carnegie Observatories, Pasadena, CA (United States)
  20. Institut d'Astrophysique de Paris, Paris (France); Lab. Interinstitucional de e-Astronomia, Rio de Janeiro (Brazil)
  21. Lab. Interinstitucional de e-Astronomia, Rio de Janeiro (Brazil); Observatorio Nacional, Rio de Janeiro (Brazil)
  22. Univ. Autonoma de Barcelona, Barcelona (Spain); Institut de Ciencies de l'Espai, Barcelona (Spain)
  23. Univ. of Portsmouth, Portsmouth (United Kingdom); Univ. of Southampton, Southampton (United Kingdom)
  24. Texas A & M Univ., College Station, TX (United States)
  25. Ludwig-Maximilians Univ., Munich (Germany); Excellence Cluster Univ. Garching (Germany)
  26. Univ. of Pennsylvania, Philadelphia, PA (United States); California Institute of Technology, Pasadena, CA (United States)
  27. Lab. Interinstitucional de e-Astronomia, Rio de Janeiro (Brazil)
  28. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States)
  29. Univ. of Michigan, Ann Arbor, MI (United States)
  30. Univ. of Illinois, Urbana, IL (United States); National Center for Supercomputing Applications, Urbana, IL (United States)
  31. The Ohio State Univ., Columbus, OH (United States)
  32. Nacional Optical Astronomy Observatory, La Serena (Chile)
  33. Australian Astronomical Observatory, North Ryde (Australia)
  34. Lab. Interinstitucional de e-Astronomia, Rio de Janeiro (Brazil); Univ. de Sao Paulo, Sao Paulo (Brazil)
  35. Lab. Interinstitucional de e-Astonomia, Rio de Janeiro (Brazil); Observatorio Nacional, Rio de Janeiro (Brazil)
  36. Univ. of Michigan, Ann Arbor, MI (United States); The Ohio State Univ., Columbus, OH (United States)
  37. Univ. of Michigan, Ann Arbor, MI (United States); Univ. of Illinois, Urbana, IL (United States)
  38. Univ. Autonoma de Barcelona, Barcelona (Spain); Institutcio Catalana de Recerca i Estudis Avancats, Barcelona (Spain)
  39. Max-Planck Institute for Extraterrestrial Physics, Garching (Germany); Ludwig-Maximilians Univ., Munich (Germany); Excellence Cluster Universe, Garching (Germany)
  40. California Institute of Technology, Pasadena, CA (United States)
  41. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  42. Univ. of Sussex, Brighton (United Kingdom)
  43. Centro de Investigaciones Energeticas, Madrid (Spain)
  44. Univ. of Illinois, Urbana, IL (United States); Centro de Investigaciones Energeticas, Madrid (Spain)
  45. National Optical Astronomy Observatory, La Serena (Chile)
  46. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lab. Interinstitucional de e-Astronomia, Rio de Janeiro (Brazil)
  47. National Center for Supercomputing Applications, Urbana, IL (United States)
  48. Univ. of Illinois, Urbana, IL (United States)
  49. Univ. of Portsmouth, Portsmouth (United Kingdom); South East Physics Network (United Kingdom)
  50. Univ.-Sternwarte, Fakultat fur Physik, Ludwig-Maximilians Univ. Munchen, Munchen (Germany); Max Planck Institute for Extraterrestrial Physics, Garching (Germany); Excellence Cluster Universe, Garching (Germany)
Publication Date:
OSTI Identifier:
1244211
Report Number(s):
BNL--111928-2016-JA
Journal ID: ISSN 0035-8711; KA2301020
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 455; Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS gravitational lensing: weak