Abstract
If the dwarf spheroidals are embedded in an extended cloud of dark matter then their density profiles can be reproduced by assuming a Maxwellian distribution of velocities for the constituent stars. The observed luminosity profiles of dwarf spheroidals imply densities for the dark matter in the range 10-26 to 10-25 g cm-3, and mass-to-luminosity ratios which are typically an order of magnitude greater than those of globular clusters. Neutrinos of mass ∼ 10 eV and (v) ∼ 1000 km s-1 can provide this requisite density for the background.
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Cowsik, R., Ghosh, P. Dynamical effects of an extended cloud of dark matter on dwarf spheroidals. J Astrophys Astron 7, 7–15 (1986). https://doi.org/10.1007/BF02715022
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DOI: https://doi.org/10.1007/BF02715022