Orbital variations of shock parameters. From top to bottom: the momentum flux ratio of two winds η, the shock distance from the pulsar r_s, the magnetic field strength B(r_s), and the energy densities of the magnetic field u_B (blue lines) and the photon field u_ph (red lines) at the shock. The dashed lines correspond to the case without the presence of the stellar disc (G = 0), while the solid lines show the effect of the disc on the shock parameters (G = 100, m = 100). In the bottom panel, the red dashed line shows the energy density of stellar photons u_star, while the dotted line shows the energy density of photon field due to shock heating of the disc u_disc. The red solid shows the sum of both components u_ph = u_star + u_disc.