Evolution of Kerr-Schild-type initial data for binary black holes using the horizon penetrating Teukolsky equation

We use the Kerr-Schild-type Teukolsky equation (horizon penetrating) to evolve binary black hole initial data as proposed by Bishop et al. in the close limit. Our results are in agreement with those recently obtained by Sarbach et al. from the Zerilli equation evolution of the same initial data.