TITLE:
Comments on Warm Dark Matter Measurements and Limits
AUTHORS:
Bruce Hoeneisen
KEYWORDS:
Warm Dark Matter, Spiral Galaxy Rotation Curves, Stellar Mass Distributions, Lyman-α Forest
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.12 No.1,
March
18,
2022
ABSTRACT: Observed spiral galaxy rotation curves allow a measurement of the warm dark matter particle velocity dispersion and mass. The measured thermal relic mass mh ≈ 100 eV is in disagreement with limits, typically in the range 1 to 4 keV. We review the measurements, update the no freeze-in and no freeze-out scenario of warm dark matter, and try to identify the cause of the discrepancies between measurements and limits.