Pancake formation including cooling and heating for an initial perturbation amplitude of A = 0.02 and for a series of perturbation scales of L = (2,8,12,16,24) Mpc/h comoving. Shown is the outcome of the simulations at z = 0 including cooling and heating (solid lines), and without dissipation (gray lines). The profiles are displayed using logarithmic coordinate axes. First row: density profiles; Second row: density flux profiles; Third row: temperature profiles.