If a realistic value of the stellar mass-to-light ratio is adopted, a cuspy DM halo ([alpha] = 1) profile is consistent with the observed stellar dynamics while a cored profile ([alpha] = 0) is rejected at 2.2[sigma] significance.
The authors conclude that "the analysis of this first galaxy shows promising evidence that dark matter halos in late-type dwarfs may in fact be more consistent with cuspy dark matter distributions than earlier work has claimed".
After that, it can quickly accelerate to 24 [percent] or even 36 [percent] when the outlook gets cuspy
," he adds.
First, they noted the galaxy's cuspy
central light profile.
Some observations support such a steep cuspy
density profile [41, 42]; nevertheless certain high-resolution rotation curves instead indicate that the distribution of DM in the centres of DM dominated dwarf and Low Surface Brightness (LSB) galaxies is much shallower, exhibiting a core with nearly constant density .
We use a Burkert [23, 24] flat, cored, dark-matter density profile known to reproduce well the kinematics of disk systems in massive spiral galaxies and supported by recent simulations including supernova feedback and radiation pressure of massive stars  in response to the cuspy