Resonant Interaction of Energetic Electrons with Radio Emission in the Magnetospheres of Exoplanets

We analyze the resonant interaction of energetic electrons with radio emission in the magnetospheres of exoplanets using the planet Tau Bootis b as an example. The conditions of this interaction and its impact on the parameters of electrons are considered for the radio emission which is detectable on the Earth. Specific features of the interaction are studied in comparison with the interaction of energetic electrons with auroral kilometric radiation in the Earth’s magnetosphere. It is shown that for the considered parameters of the magnetosphere of Tau Bootis b and radio emission in it, the resonant interaction of electrons with radio emission is strongly nonlinear. For a wave packet of finite duration, the interaction can cause a significant acceleration of particles in a wide range of energies (from tens to hundreds of kiloelectronvolts).