Testing universal dark-matter caustic rings with galactic rotation curves
Cosmology and Nongalactic Astrophysics
2023-03-03 v2 High Energy Physics - Phenomenology
Abstract
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.
Cite
@article{arxiv.2206.10260,
title = {Testing universal dark-matter caustic rings with galactic rotation curves},
author = {D. Davydov and S. Troitsky},
journal= {arXiv preprint arXiv:2206.10260},
year = {2023}
}
Comments
9 pages, 4 figures. V2: comparison with previous studies extended; version accepted by Phys. Lett. B