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A SECOND-ORDER BIAS MODEL FOR THE LOGARITHMIC HALO MASS DENSITY
We present an analytic model for the local bias of dark matter halos in a LCDM universe. The model uses the halo mass density instead of the halo number density and is searched for various halo mass cuts, smoothing lengths, and redshift epoches. We find that, when the logarithmic density is used, the second-order polynomial can fit the numerical relation between the halo mass distribution and the underlying matter distribution extremely well. In this model the logarithm of the dark matterdoi:10.1088/0004-637x/753/1/11 fatcat:o73e6ujuvnbjpjldak23ltbfjm