# On the Newtonian limit and cut-off scales of isothermal dark matter haloes with cosmological constant

@article{Sussman2003OnTN, title={On the Newtonian limit and cut-off scales of isothermal dark matter haloes with cosmological constant}, author={Roberto Sussman and Xavier Hernandez Instituto de Ciencias Nucleares and Instituto de Astronomia and Universidad Autonoma de Mexico and Unam}, journal={Monthly Notices of the Royal Astronomical Society}, year={2003}, volume={345}, pages={871-882} }

We examine isothermal dark matter haloes in hydrostatic equilibrium with a 'A-field', or cosmological constant A = Ω Λ ρ critc 2 , where Ω Λ ≃ 0.7 and ρ c r i t is the present value of the critical density with h ≃ 0.65. Modelling cold dark matter (CDM) as a self-gravitating Maxwell-Boltzmann gas, the Newtonian limit of general relativity yields equilibrium equations that are different from those arising by merely coupling an 'isothermal sphere' to the A-field within a Newtonian framework…

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