A review is given of the current state-of-the-art of experimental studies and the theoretical
understanding of nonlinear phenomena that occur in the ionospheric F-layer irradiated by …

We present a short review of research using “Sura,” a multipurpose radio facility of the
Radiophysical Research Institute of Nizhny Novgorod, which is aimed at studying space, the …

We report on artificial descending plasma layers created in the ionosphere F region by high-
power high-frequency (HF) radio waves from High-frequency Active Auroral Research …

Results of systematic study of Stimulated Electromagnetic Emission (SEE) steady state
spectrum dependence on the pump wave frequency f0 are presented. Investigations of the …

Stimulated Electromagnetic Emissions (SEEs), secondary electromagnetic waves excited by
high power electromagnetic waves transmitted into the ionosphere, produced by the …

We provide the first experimental evidence of the sensitivity of phenomena induced by
extraordinary (X-mode) polarized HF high power radio waves to pump frequency stepping …

On 4 February 2005, the High‐frequency Active Auroral Research Program (HAARP) facility
was operated in O and X mode while pointing into the magnetic zenith to produce artificial …

This brief review is devoted to full-scale numerical modeling of the nonlinear interactions
between electromagnetic (EM) waves and the ionosphere, giving rise to ionospheric …

Recent theoretical models and preliminary observations indicate that super small striations
(SSS) in the plasma density with scale size of 10 cm can be excited by F region HF heating …

We present the results of multi-instrument studies of the phenomena in the high-latitude
ionospheric F region stimulated by high-power HF O-mode radio waves injected towards the …