Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2009-08-06
AIP Conf.Proc.1241:1066-1073,2010
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
8 pages, 9 figures. Talk given by JWM at the "The Invisible Universe" conference, Paris, France, June 29-July 3, 2009
Scientific paper
10.1063/1.3462601
MOG is a fully relativistic modified theory of gravity based on an action principle. The MOG field equations are exactly solvable numerically in two important cases. In the spherically symmetric, static case of a gravitating mass, the equations also admit an approximate solution that closely resembles the Reissner-Nordstrom metric. Furthermore, for weak gravitational fields, a Yukawa-type modification to the Newtonian acceleration law can be obtained, which can be used to model a range of astronomical observations. Without nonbaryonic dark matter, MOG provides good agreement with the data for galaxy rotation curves, galaxy cluster masses, and gravitational lensing, while predicting no appreciable deviation from Einstein's predictions on the scale of the solar system. Another solution of the field equations is obtained for the case of a a spatially homogeneous, isotropic cosmology. MOG predicts an accelerating universe without introducing Einstein's cosmological constant; it also predicts a CMB acoustic power spectrum and a mass power spectrum that are consistent with observations without relying on non-baryonic dark matter. Increased sensitivity in future observations or space-based experiments may be sufficient to distinguish MOG from other theories, notably the LCDM "standard model" of cosmology.
Moffat John W.
Toth Viktor T.
No associations
LandOfFree
Observationally Verifiable Predictions of Modified Gravity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observationally Verifiable Predictions of Modified Gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observationally Verifiable Predictions of Modified Gravity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-705472