THE ENERGETICS OF CUSP DESTRUCTION

We present a new analytic estimate for the energy required to create a constant density core within a dark matter halo that, based on more realistic assumptions, leads to demands that are orders of magnitude lower than claimed in earlier works. We define a core size based on the logarithmic slope of the dark matter density profile as it is insensitive to the functional form used to fit observed data. The energy required to form a core …