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

Journal Article · · Monthly Notices of the Royal Astronomical Society
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  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)
+ Show Author Affiliations

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 bias 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.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC00112704
OSTI ID:
1244211
Report Number(s):
BNL-111928-2016-JA; KA2301020
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 455, Issue 3; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 60 works
Citation information provided by
Web of Science

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Cited By (28)

Photometric redshifts for the Kilo-Degree Survey: Machine-learning analysis with artificial neural networks journal August 2018
Galileon gravity in light of ISW, CMB, BAO and H 0 data journal October 2017
A nulling strategy for modelling lensing convergence in cones with large deviation theory journal January 2020
cosmolike – cosmological likelihood analyses for photometric galaxy surveys journal May 2017
Cosmic voids in evolving dark sector cosmologies: the high-redshift universe journal July 2018
Studying galaxy troughs and ridges using weak gravitational lensing with the Kilo-Degree Survey journal September 2018
An accurate linear model for redshift space distortions in the void–galaxy correlation function journal December 2018
The Santiago–Harvard–Edinburgh–Durham void comparison – I. SHEDding light on chameleon gravity tests journal February 2018
Cylinders out of a top hat: counts-in-cells for projected densities journal March 2018
The Santiago–Harvard–Edinburgh–Durham void comparison II: unveiling the Vainshtein screening using weak lensing journal January 2019
On the relative bias of void tracers in the Dark Energy Survey journal May 2019
Dark Energy Survey year 1 results: the relationship between mass and light around cosmic voids journal October 2019
Weak lensing by voids in weak lensing maps journal July 2018
Density split statistics: Cosmological constraints from counts and lensing in cells in DES Y1 and SDSS data journal July 2018
Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing journal August 2018
Towards testing gravity with cosmic voids journal November 2018
Detection of z ∼ 2.3 Cosmic Voids from 3D Ly α Forest Tomography in the COSMOS Field journal July 2018
Constraining Dark Energy with Stacked Concave Lenses journal March 2019
Cylinders out of a top hat: Counts-in-cells for projected densities text January 2018
Dark Energy Survey Year 1 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing text January 2017
Photometric redshifts for the Kilo-Degree Survey. Machine-learning analysis with artificial neural networks text January 2017
Density split statistics: Cosmological constraints from counts and lensing in cells in DES Y1 and SDSS data text January 2017
Cylinders out of a top hat: counts-in-cells for projected densities text January 2017
Weak lensing by voids in weak lensing maps text January 2018
On the relative bias of void tracers in the Dark Energy Survey text January 2018
Cosmic Voids in Evolving Dark Sector Cosmologies: the High Redshift Universe text January 2018
The Santiago-Harvard-Edinburgh-Durham void comparison II: unveiling the Vainshtein screening using weak lensing text January 2018
Dark Energy Survey Year 1 results: The relationship between mass and light around cosmic voids text January 2019

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
gravitational lensing: weak