Chameleon gravity and satellite geodesy

Authors :: J. R. Morris
Source :: Astrophysics and Space Science. 354:667-673
Publication Year :: 2014
Publisher :: Springer Science and Business Media LLC, 2014.
Abstract: We consider the possibility of the detection of a chameleon effect by an earth orbiting satellite such as LAGEOS, and possible constraints that might be placed on chameleon model parameters. Approximate constraints presented here result from using a simple monopole approximation for the gravitational field of the earth, along with results from the Khoury-Weltman chameleon model, solar system constraints obtained from the Cassini mission, and parameter bounds obtained from the LAGEOS satellite. It is furthermore suggested that a comparison of ground-based and space-based multipole moments of the geopotential could reveal a possible chameleon effect.<br />Comment: 13 pages; to appear in Astrophys.Space Sci