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Astrophysics > Cosmology and Nongalactic Astrophysics

arXiv:1602.00055 (astro-ph)
[Submitted on 30 Jan 2016]

Title:Modified Dark Matter

Authors:Y. Jack Ng, Doug Edmonds, Duncan Farrah, Djordje Minic, Tatsu Takeuchi, Chiu Man Ho
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Abstract: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.
Comments: 6 pages, 6 figures, talk given at the 14th Marcel Grossmann Meeting in Rome; to appear in the Proceedings
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1602.00055 [astro-ph.CO]
  (or arXiv:1602.00055v1 [astro-ph.CO] for this version)
  https://doi.org/10.48550/arXiv.1602.00055

Submission history

From: Y. Jack Ng [view email]
[v1] Sat, 30 Jan 2016 01:56:28 UTC (229 KB)
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