# The bending of light and lensing in modified gravity

@article{Moffat2009TheBO,
title={The bending of light and lensing in modified gravity},
author={John W. Moffat and V. Toth},
journal={Monthly Notices of the Royal Astronomical Society},
year={2009},
volume={397},
pages={1885-1892}
}
• Published 30 May 2008
• Physics
• Monthly Notices of the Royal Astronomical Society
Our modified gravity theory (MOG) was used successfully in the past to explain a range of astronomical and cosmological observations, including galaxy rotation curves, the cosmic microwave background acoustic peaks, and the galaxy mass power spectrum. MOG was also used successfully to explain the unusual features of the Bullet Cluster 1E0657-558 without exotic dark matter. In the present work, we derive the relativistic equations of motion in the spherically symmetric field of a point source in…

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## References

SHOWING 1-10 OF 18 REFERENCES
Fundamental parameter-free solutions in Modified Gravity
• Physics
• 2009
Modified gravity (MOG) has been used successfully to explain the rotation curves of galaxies, the motion of galaxy clusters, the bullet cluster and cosmological observations without the use of dark
Observational Tests of Modified Gravity
• Physics, Geology
• 2008
Modifications of general relativity provide an alternative explanation to dark energy for the observed acceleration of the Universe. Modified gravity theories have richer observational consequences
Galaxy Rotation Curves without Nonbaryonic Dark Matter
• Physics
• 2006
We apply the modified acceleration law obtained from Einstein gravity coupled to a massive skew-symmetric field Fμνλ to the problem of explaining galaxy rotation curves without exotic dark matter.
Gravitational theory, galaxy rotation curves and cosmology without dark matter
Einstein gravity coupled to a massive skew symmetric field Fμνλ leads to an acceleration law that modifies the Newtonian law of attraction between particles. We use a framework of non-perturbative
Galaxy cluster masses without non-baryonic dark matter
• Physics
• 2005
We apply the modified acceleration law obtained from Einstein gravity coupled to a massive skew symmetric field, Fμνλ, to the problem of explaining X-ray galaxy cluster masses without exotic dark
The Bullet Cluster 1E0657-558 evidence shows modified gravity in the absence of dark matter
• Physics
• 2007
A detailed analysis of the 2006 November 15 data release X-ray surface density Σ-map and the strong and weak gravitational lensing convergence K-map for the Bullet Cluster 1E0657-558 is performed and
Measuring the dark side (with weak lensing)
• Physics
• 2008
We introduce a convenient parameterization of dark energy models that is general enough to include several modified gravity models and generalized forms of dark energy. In particular we take into
A Dark Core in Abell 520
• Physics
• 2007
The rich cluster Abell 520 (z = 0.201) exhibits truly extreme and puzzling multiwavelength characteristics. It may best be described as a "cosmic train wreck." It is a major merger showing abundant
Lensing at cosmological scales: a test of higher dimensional gravity
• Physics
• 2001
Recent developments in gravitational lensing astronomy have paved the way to genuine mappings of the gravitational potential at cosmological scales. We stress that comparing these data with