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Dark Matter Scaling Relations
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abstract
We establish the presence of a dark matter core radius, for the first time in a very large number of spiral galaxies of all luminosities. Contrary to common opinion we find that the sizes of these cores and the " DM core problem" are bigger for more massive spirals. As a result the Burkert profile provides an excellent mass model for dark halos around disk galaxies. Moreover, we find that the spiral dark matter core densities $\rho_{0}$ and core radii $r_{0}$ lie in the same scaling relation $\rho_{0}=4.5\times 10^-2 (r_{0}/kpc)^{-2/3} M_{\odot}pc^{-3}$ of dwarf galaxies with core radii upto ten times more smaller.
Forward citations
Cited by 6 Pith papers
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A PINN approach learns galactic gravitational potentials from acceleration data, achieving sub-percent errors on simulations while outperforming analytic models and retaining interpretability via structured priors.
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A full four-body final-state treatment of secluded and catalyzed dark matter annihilation weakens Fermi-LAT and Planck limits, reopening parameter space for scalar, fermion, and vector dark matter in two portal models.
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Ringdown of a black hole sourced by a Burkert-density effective anisotropic source
The Burkert-halo black hole metric and its quasinormal-mode shifts are computed, but the model's source is not Burkert and the axial gravitational potential is incorrect.
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Constraints on dark matter annihilation in the Large Magellanic Cloud from multiple low-frequency radio observations
Fitting LMC low-frequency radio data with a dark matter plus cosmic-ray double power-law model yields dark-matter flux limits of 98.4 to 114.8 Jy at 1.4 GHz, which translate to annihilation cross-section bounds above ...
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