Correlations of intensity fluctuations of pulsar radio emission at different longitudes of mean profile. Data interpretation in the polar cap model

The interpretation of the previously obtained results on crosscorrelations of subpulse intensity fluctuations at different longitudes of the mean profile has been conducted by computer simulations of radio pulses for different parameters of polar cap models for pulsar radio emission. In such an approach, it has been shown that Sturrock mechanism of pair creation by energetic γ-rays in the magnetic field of neutron star plays a considerable role in formation of electron-positron plasma. The magnetic field geometry in the region of pair formation seems to be different from pure dipole, but appears to have rather simple regular structure