The paper reviews the characteristics of plasma-wave perturbations produced by wave-particle interactions in the magnetosphereionosphere
system. These perturbations may, in particular, be due to lightning discharges and to the radiation of high-power, lowfrequency
transmitters. These can form waveguide channels, i.e., density inhomogeneities, which originate in the ionosphere above the
radiation source and extend along geomagnetic field lines in the magnetosphere. Аlthough different in nature, the natural and manmade
radiations may have similar effects on the processes in the near-earth plasma, causing the excitation of a variety of emissions in it,
and stimulating the precipitation of charged particles from the magnetosphere into the ionosphere.
Keywords: magnetosphere-ionosphere coupling, low frequency emissions, active experiments, lightning stokes, wave-particle interactions, particle heating and precipitation PACS: 94.20-у, 94.30.−d DOI:10.3367/UFNe.0185.201506i.0649 URL: https://ufn.ru/en/articles/2015/6/h/ Citation: Petrukovich A A, Mogilevsky M M, Chernyshov A A, Shklyar D R "Some aspects of magnetosphere ionosphere relations" Phys. Usp.58 606–611 (2015)