Modified Dark Matter in Galaxies and Galaxy Clusters

Abstract

Modified Dark Matter (MDM) is a phenomenological model of dark matter, inspired by gravitational thermodynamics, that naturally accounts for the universal acceleration constant observed in galactic rotation curve data; a critical acceleration related to the cosmological constant, $\Lambda$, appears as a phenomenological manifestation of MDM. We show that the resulting mass profiles, which are sensitve to $\Lambda$, are consistent with observations at the galactic and galaxy cluster scales. Our results suggest that dark matter mass profiles contain information about the cosmological constant in a non-trivial way.

arXiv commentTo be published in the Proceedings of the Bahamas Advanced Study Institute and Conferences (BASIC)

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• Dark Energy and String Theory
• Strong lensing constraints on modified gravity models