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The bending of light and lensing in modified gravity · Around

2008

The bending of light and lensing in modified gravity

Moffat, J. W., Toth, V. T.

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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 CMB 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 MOG and, in particular, we derive equations for light bending and lensing.
Our results also have broader applications in the case of extended distributions of matter, and they can be used to validate the Bullet Cluster results and provide a possible explanation for the merging clusters in Abell 520.

Built on

S. Weinberg, Gravitation and Cosmology (John Wiley & Sons, 1972)
1972
Earlier work this paper cites.
J. A. Peacock, Cosmological Physics (Cambridge University Press, 1999)
1999
Earlier work this paper cites.
J. W. Moffat, ArXiv gr-qc/0404076
2004
Earlier work this paper cites.

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J. W. Moffat, Journal of Cosmology and Astroparticle Physics 2005
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J. R. Brownstein and J. W. Moffat, Mon. Not. R. Astron. Soc. 367
Cited in the paper.
J. W. Moffat and V. T. Toth, arXiv 0710.0364 [astro-ph]
Cited in the paper.

Then

J. R. Brownstein and J. W. Moffat, Mon. Not. R. Astron. Soc. 382 (1)
2007
Later among the works it cites.
A. Mahdavi, H. Hoekstra, A. Babul, D. D. Balam, and P. L. Capak, Astrophys. J. 668
Original
2007
Later among the works it cites.
S. Weinberg, Cosmology (Oxford University Press, 2008)
2008
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