MOND predictions of 'halo' phenomenology in disc galaxies

Mordehai Milgrom, Robert H. Sanders

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Abstract

We examine two corollaries of MOND pertaining to properties of the equivalent dark matter halo. MOND predicts for pure exponential discs a tight relation involving the halo and disc scalelengths and the mean acceleration in the disc, which we find to test favourably against the Verheijen sample of Ursa Major galaxies. A correlation between halo and disc length-scales is also apparent when the `maximum disc' contribution is assumed, but we demonstrate that this follows from the more general MOND prediction. The second MOND prediction involves the existence of a maximum halo acceleration, which also tests favourably against the Ursa Major sample for different assumptions on the disc contribution.

Original languageEnglish
Pages (from-to)45-48
Number of pages4
JournalMonthly Notices of the Royal Astronomical Society
Volume357
Issue number1
DOIs
Publication statusPublished - 11-Feb-2005

Keywords

  • galaxies : kinematics and dynamics
  • dark matter
  • MODIFIED NEWTONIAN DYNAMICS
  • DARK-MATTER
  • ACCELERATION RELATION
  • MASS

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