Observational evidence for dark matter interacting through a Yukawa potential

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Abstract

Recent observations in galaxies and clusters indicate that dark matter density profiles exhibit core-like structures which contradict the numerical simulation results of collisionless cold dark matter (CDM). On the other hand, it has been shown that CDM particles interacting through a Yukawa potential could naturally explain the cores in dwarf galaxies. In this Letter, I use the Yukawa potential interacting dark matter model to derive two simple scaling relations on the galactic and cluster scales, respectively, which give excellent agreements with observations. Also, in our model, the masses of the force carrier and dark matter particle can be constrained by the observational data. Copyright © 2013 The American Astronomical Society. All rights reserved.
Original languageEnglish
Article numberL2
JournalAstrophysical Journal Letters
Volume769
Issue number1
DOIs
Publication statusPublished - May 2013

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Yukawa potential
dark matter
dwarf galaxies
galaxies
scaling
profiles
simulation

Citation

Chan, M. H. (2013). Observational evidence for dark matter interacting through a Yukawa potential. The Astrophysical Journal Letters, 769(1). Retrieved from https://doi.org/10.1088/2041-8205/769/1/L2

Keywords

  • Dark matter
  • Galaxies: clusters: general
  • Galaxies: kinematics and dynamics