PSR J1835-1106. Top: for each model the best joint fit solution γ-ray light-curve (thick black line) is superimposed on the LAT pulsar γ-ray light-curve (shaded histogram). The estimated background is indicated by the dash-dot line. Bottom: for each model the best joint fit solution radio light-curve (black line) is superimposed on the LAT pulsar radio light-curve (grey thick line). The radio model is unique, but the (α,ζ) solutions vary for each γ-ray model.