Ultralight dark matter (ULDM) is currently one of the most popular classes of cosmological dark matter. The most important advantage is that ULDM with mass m ~ 10⁻²² eV can account for the small-scale problems encountered in the standard cold dark matter model like the core–cusp problem, missing satellite problem, and the too-big-to-fail problem in galaxies. In this paper, we formulate a new simple model-independent analysis using the Spitzer Photometry and Accurate Rotation Curves data to constrain the range of ULDM mass. In particular, the most stringent constraint comes from the data of a galaxy ESO563–G021, which can conservatively exclude a ULDM mass range m = (0.14–3.11) × 10⁻²² eV. This model-independent excluded range is consistent with many bounds obtained by recent studies and it suggests that the ULDM proposal may not be able to alleviate the small-scale problems. Copyright © 2021 The American Astronomical Society. All rights reserved.
CitationChan, M. H., & Yeung, C. F. (2021). Model-independent constraints on Ultralight dark matter from the SPARC data. Astrophysical Journal, 913(1). Retrieved from https://doi.org/10.3847/1538-4357/abf42f
- Dark matter
- Particle astrophysics
- Spiral galaxies