천문학회지 (Journal of The Korean Astronomical Society)

  • 제46권2호
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  • Pages.93-96
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  • 2013
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  • 1225-4614(pISSN)
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  • 2288-890X(eISSN)
한국천문학회 (The Korean Astronomical Society)
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A DERIVATION OF MODIFIED NEWTONIAN DYNAMICS

  • Trippe, Sascha (Department of Physics and Astronomy, Seoul National University)
  • 투고 : 2013.02.14
  • 심사 : 2013.03.29
  • 발행 : 2013.04.30
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초록

Modified Newtonian Dynamics (MOND) is a possible solution for the missing mass problem in galactic dynamics; its predictions are in good agreement with observations in the limit of weak accelerations. However, MOND does not derive from a physical mechanism and does not make predictions on the transitional regime from Newtonian to modified dynamics; rather, empirical transition functions have to be constructed from the boundary conditions and comparisons with observations. I compare the formalism of classical MOND to the scaling law derived from a toy model of gravity based on virtual massive gravitons (the "graviton picture") which I proposed recently. I conclude that MOND naturally derives from the "graviton picture" at least for the case of non-relativistic, highly symmetric dynamical systems. This suggests that-to first order-the "graviton picture" indeed provides a valid candidate for the physical mechanism behind MOND and gravity on galactic scales in general.

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피인용 문헌

  1. Galaxies as simple dynamical systems: observational data disfavor dark matter and stochastic star formation1 vol.93, pp.2, 2015, https://doi.org/10.1139/cjp-2014-0179
  2. The “graviton picture”: a Bohr model for gravitation on galactic scales?1 vol.93, pp.2, 2015, https://doi.org/10.1139/cjp-2014-0158
  3. MOND theory1 vol.93, pp.2, 2015, https://doi.org/10.1139/cjp-2014-0211