Influence of a Small-Scale Magnetic Field on the Heating
 of the Polar Cap of the Radio Pulsar J0901–4046

The pulsar J0901–4046 has a spin periodP = 75.8 s and is themost slowly rotating one amongthe isolated radio pulsars. We have considered the influence of a small-scale magnetic field in the offcentereddipole model on the polar cap heating by the reverse positron current in the inner gap of the pulsar.We have assumed that the electron–positron pairs in the gap are created in bound states, which then arebroken by thermal photons from the stellar surface.