期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 474, 期 3, 页码 3152-3161出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stx3062
关键词
gravitation; galaxies: fundamental parameters; galaxies: kinematics and dynamics; galaxies: statistics
资金
- Balzan foundation via New College, Oxford
- U.S. Department of Energy [DE-AC02-76SF00515]
- St John's College, Oxford
- ERC [693024]
- Beecroft Trust
- STFC
- 'Programme National de Cosmologie and Galaxies' (PNCG) of CNRS/INSU, France
- ANR [ANR-16-CE23-0002]
- DFG cluster of excellence 'Origin and Structure of the Universe'
- French state funds [ANR-10-LABX-63, ANR-11-IDEX-0004-02]
- STFC [ST/N000919/1, ST/F003110/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F003110/1] Funding Source: researchfish
- Agence Nationale de la Recherche (ANR) [ANR-16-CE23-0002] Funding Source: Agence Nationale de la Recherche (ANR)
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. Finally, we investigate the improvements afforded by upcoming galaxy surveys.
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