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Physics Dark matter Galaxy rotation curve Astrophysics Dark fluid Hot dark matter Context (archaeology) Cold dark matter Galaxy Scalar field dark matter Mixed dark matter Dark energy Astronomy Cosmology Galaxy formation and evolution Biology Paleontology

Y. Jack Ng , Doug Edmonds , D. Farrah , Djordje Minić , Tatsu Takeuchi , Chiu Man Ho ·

YOU? · · 2017 · Open Access · · DOI: https://doi.org/10.1142/9789813226609_0524 · OA: W2263552876

Modified dark matter (MDM, formerly known as MoNDian dark matter) is a phenomenological model of dark matter, inspired by quantum gravity. We review the construction of MDM by generalizing entropic gravity to de-Sitter space as is appropriate for an accelerating universe (in accordance with the Lambda-CDM model). Unlike cold dark matter models, the MDM mass profile depends on the baryonic mass. We successfully fit the rotation curves to a sample of 30 local spiral galaxies with a single free parameter (viz., the mass-to-light ratio for each galaxy). We show that dynamical and observed masses agree in a sample of 93 galactic clusters. We also comment on strong gravitational lensing in the context of MDM.