Author(s)

T. R. Mongan

84 Marin Avenue, Sausalito, California, USA.

Many physicists believe dark matter accounts for flat velocity curves in spiral galaxies and find further evidence for dark matter in observations of the colliding “bullet cluster” galaxies 1E0657-56. Others claim a modified law of gravity called MOND (MOdified Newtonian Dynamics) explains galactic velocity curves better than dark matter. Merritt recently argued for MOND (arXiv:1703.02389) by claiming dark matter models cannot account for the MOND acceleration threshold a₀≈ 1.2x10^-8cm/sec² and the (V_observed/V_Newtonian) relation. However, this note shows that the HLSS model involving dark matter accounts for both the MOND acceleration and the (V_observed/V_Newtonian) relation. After this paper was accepted for publication, I learned that Man Ho Chan previously reached the same conclusion (arXiv:1310.6801) using a dark matter based analysis independent of the holographic approach used in this paper.

Galactic Structure, Dark Matter, MOND (MOdified Newtonian Dynamics)

Mongan, T. (2017) Dark Matter versus MOND. Journal of Modern Physics, 8, 919-922. doi: 10.4236/jmp.2017.86057.