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This content will become publicly available on November 25, 2018

Title: Reconstructing the gravitational field of the local Universe

Tests of gravity at the galaxy scale are in their infancy. As a first step to systematically uncovering the gravitational significance of galaxies, we map three fundamental gravitational variables – the Newtonian potential, acceleration and curvature – over the galaxy environments of the local Universe to a distance of approximately 200 Mpc. Our method combines the contributions from galaxies in an all-sky redshift survey, haloes from an N-body simulation hosting low-luminosity objects, and linear and quasi-linear modes of the density field. We use the ranges of these variables to determine the extent to which galaxies expand the scope of generic tests of gravity and are capable of constraining specific classes of model for which they have special significance. In conclusion, we investigate the improvements afforded by upcoming galaxy surveys.
ORCiD logo [1] ;  [2] ; ORCiD logo [3] ;  [4]
  1. Univ. of Oxford (United Kingdom). Astrophysics; Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology, Dept. of Physics; SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. of Oxford (United Kingdom). Astrophysics
  3. Sorbonne Univ., Paris (France). Inst. d'astrophysique de Paris, and Inst. Lagrange de Paris (ILP)
  4. Technische Univ. Munchen, Garching (Germany). Excellence Cluster Universe
Publication Date:
Grant/Contract Number:
AC02-76SF00515; ANR-16-CE23-0002
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 474; Journal Issue: 3; Journal ID: ISSN 0035-8711
Royal Astronomical Society
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE; European Research Council (ERC); Centre National de la Recherche Scientifique (CNRS)
Country of Publication:
United States
79 ASTRONOMY AND ASTROPHYSICS; gravitation; galaxies fundamental parameters; galaxies kinematics and dynamics; galaxies statistics
OSTI Identifier: