MOND and the Galaxies

Abstract

We review galaxy formation and dynamics under the MOND hypothesis of modified gravity, and compare to similar galaxies in Newtonian dynamics with dark matter. The aim is to find peculiar predictions both to discriminate between various hypotheses, and to make the theory progress through different constraints, touching the interpolation function, or the fundamental acceleration scale. Galaxy instabilities, forming bars and bulges at longer term, evolve differently in the various theories, and help to bring constraints, together with the observations of bar frequency. Dynamical friction and the predicted merger rate could be a sensitive test of theories. The different scenarios of galaxy formation are compared within the various theories and observations.

8 pages, 7 figures, Invited paper to "The Invisible Universe International Conference", ed. J-M. Alimi, A. Fuzfa, P-S. Corasaniti, AIP pub

Cited by in corpus (9)

• Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions
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• The failures of the standard model of cosmology require a new paradigm
• Generalizing MOND to explain the missing mass in galaxy clusters
• Cosmological variation of the MOND constant: secular effects on galactic systems
• Lopsidedness of cluster galaxies in modified gravity
• The radial acceleration relation and dark baryons in MOND
• Imprint of the galactic acceleration scale on globular cluster systems
• Are disks of satellites comprised of tidal dwarf galaxies?