• Corpus ID: 249889304

Testing universal dark-matter caustic rings with galactic rotation curves

@inproceedings{Davydov2022TestingUD,
  title={Testing universal dark-matter caustic rings with galactic rotation curves},
  author={Dmitriy Davydov and Sergei V Troitsky},
  year={2022}
}
Infall of cold dark matter on a galaxy may result in caustic rings where the particle density is enhanced. They may be searched for as features in the galactic rotation curves. Previous studies suggested the evidence for these caustic rings with universal, that is common for different galaxies, parameters. Here we test this hypothesis with a large independent set of rotation curves by means of an improved statistical method. No evidence for universal caustic rings is found in the new analysis… 

Figures from this paper

References

SHOWING 1-10 OF 27 REFERENCES
Evidence for ring caustics in the Milky Way
Caustic rings of dark matter
TESTING THE DARK MATTER CAUSTIC THEORY AGAINST OBSERVATIONS IN THE MILKY WAY
We test a particular theory of dark matter in which dark matter axions form ring “caustics” in the plane of the Milky Way against actual observations of Milky Way stars. According to this theory,
Dark matter caustics and the enhancement of self-annihilation flux
Cold dark matter haloes are populated by caustics, which are yet to be resolved in N-body simulations or observed in the Universe. The secondary infall model provides a paradigm for the study of
Extended rotation curves of spiral galaxies: dark haloes and modified dynamics
Strict criteria are applied to the sample of spiral galaxies with measured rotation curves in order to select those objects for which the observed rotation curve is an accurate tracer of the radial
The Secondary infall model of galactic halo formation and the spectrum of cold dark matter particles on earth
The spectrum of cold dark matter particles on Earth is expected to have peaks in velocity space associated with particles which are falling onto the Galaxy for the first time and with particles which
Caustic ring model of the Milky Way halo
We present a proposal for the full phase-space distribution of the Milky Way halo. The model is axially and reflection symmetric and its time evolution is self-similar. It describes the halo as a set
γ-ray flux from dark matter annihilation in galactic caustics
In the framework of indirect dark matter searches we investigate the flux of high energy γ-ray photons produced by annihilation of dark matter in caustics within our Galaxy under the hypothesis that
Resolving infall caustics in dark matter halos
It has been found that the phase space of dark matter particles assembling a galactic halo in cosmological N-body simulations well defines the fine grained structure. Recently accreted particles form
Evidence for universal structure in galactic halos
The late infall of dark matter onto a galaxy produces structure (such as caustics) in the distribution of dark matter in the halo. We argue that such structure is likely to occur generically on
...
...