ar X iv : 0 70 8 . 19 35 v 3 [ as tr o - ph ] 2 7 A ug 2 00 7 Testing modified gravity with globular cluster velocity dispersions

نویسنده

  • V. T. Toth
چکیده

Globular clusters (GCs) in the Milky Way have characteristic velocity dispersions that are consistent with the predictions of Newtonian gravity, and may be at odds with Modified Newtonian Dynamics (MOND) and possibly the cold dark matter model. We discuss a modified gravity (MOG) theory that can successfully model the velocity dispersions of GCs in the Galactic neighborhood. MOG produces velocity dispersion predictions for GCs orbiting far from the Galactic center that are clearly distinct from the MOND and ΛCDM predictions. New observations of distant GCs may produce a strong criteria that can be used to distinguish between competing gravitational theories. Subject headings: gravity: theory — dark matter — globular clusters

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ar X iv : 0 70 8 . 19 35 v 2 [ as tr o - ph ] 1 6 A ug 2 00 7 Testing modified gravity with globular cluster velocity dispersions

Globular clusters in the Milky Way have characteristic velocity dispersions that are consistent with the predictions of Newtonian gravity, and may be at odds with Modified Newtonian Dynamics (MOND) and possibly the cold dark matter model. We discuss a modified gravity (MOG) theory that can successfully model the velocity dispersions of GCs in the Galactic neighborhood. MOG produces velocity dis...

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تاریخ انتشار 2008