Testing Modified Dark Matter with Galaxy Clusters: Does Dark Matter know about the Cosmological Constant?
Cosmology and Nongalactic Astrophysics
2017-07-26 v1 High Energy Astrophysical Phenomena
High Energy Physics - Phenomenology
Abstract
We discuss the possibility that the cold dark matter mass profiles contain information on the cosmological constant, and that such information constrains the nature of cold dark matter (CDM). We call this approach Modified Dark Matter (MDM). In particular, we examine the ability of MDM to explain the observed mass profiles of 13 galaxy clusters. Using general arguments from gravitational thermodynamics, we provide a theoretical justification for our MDM mass profile and successfully compare it to the NFW mass profiles both on cluster and galactic scales. Our results suggest that indeed the CDM mass profiles contain information about the cosmological constant in a non-trivial way.
Cite
@article{arxiv.1601.00662,
title = {Testing Modified Dark Matter with Galaxy Clusters: Does Dark Matter know about the Cosmological Constant?},
author = {Doug Edmonds and Duncan Farrah and Chiu Man Ho and Djordje Minic and Y. Jack Ng and Tatsu Takeuchi},
journal= {arXiv preprint arXiv:1601.00662},
year = {2017}
}