摘要: We investigate the structure of dark matter halos by means kinematics a very large sample spiral galaxies all luminosities. The observed rotation curves show universal profile which is sum an exponential thin disk term and spherical halo with flat density core. find that Burkert proposed to describe distribution dwarf also provides excellent mass model for around systems up 100 times more massive. Moreover, we core densities ρ0 radii r0 lie in same scaling relation = 4.5 × 10-2(r0/kpc)-2/3 M☉ pc-3 10 smaller. At highest masses decreases faster than - power law, implying lack objects greater 1011 central 1.5 10-2(r0/kpc)-3 can be explained existence maximum about 2 1012 hosting galaxy.
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