2017MNRAS.468.1221M

We develop a model to explain flares observed at a frequency of 111 MHz in the radiation of pulsar J0643+80. We consider non-linear processes in the electron-positron plasma of the pulsar magnetosphere and show that these interactions can cause self-trapping of radio emission in narrow bands of frequencies. This mechanism can explain the origin of the observed flares without any additional sources of radio emission. The proposed scenario naturally explains why strong enhancement of the radio emission does not affect radiation in other frequency bands.