Intense HF radiation from a ground-based facility heats the D-region of the ionosphere. The heating modifies the electron energy distribution function, which is found by solving the kinetic equation at each spatial location. The solution selfconsistently takes into account attenuation of HF radiation due to modified HF conductivity. A modulation HF radiation at ELF/VLF frequencies creates corre...

Common view is that non-linear interaction between whistler mode signals from a VLF transmitter and energetic electrons can successfully explain the generation of sideband spacings of 1-30 kHz in the magnetosphere. However, VLF transmitter experiments conducted at Siple show that long keydown signals injected into the magnetosphere often generate sidebands as a result of nonlinear interaction w...

A detailed analysis of the VLF emissions data obtained during occasional whistler campaigns at the low-latitude ground station Agra (geomagnetic latitude 17°1¢ N, L = 1.15) has yielded some unusual discrete VLF emissions of the rising type. These include (1) emissions occurring at time intervals increasing in geommetrical progression, (2) emissions occuring simultaneously in di€erent frequency ...

The very low frequency (VLF) propagation mapper (VPM) is a 6U CubeSat designed to measure VLF radio waves in Low-Earth Orbit. science goals of the VPM mission are signals broadcast by DSX mission, and study natural anthropogenic (from lightning transmitters) near-Earth space environment. primary payload consists an electric field dipole antenna deployed 2 meters length, magnetic search coil 50 ...

BACKGROUND Renal function is associated with mortality and functional disabilities in stroke patients, and impaired autonomic function is common in stroke, but little is known regarding its effects on stroke patients with renal dysfunction. This study sought to evaluate the association between autonomic function and stroke in patients with renal dysfunction. METHODS This study comprised 232 p...

A retrospective analysis of complex geophysical data around the time two most powerful earthquakes that occurred in Alaska and had magnitudes M = 8.2 (29 July 2021) 9.2 (28 March 1964), respectively, is carried out. The aim research to assess maximum possible magnitude electric field a seismogenic nature penetrated ionosphere/plasmasphere, which could cause ionospheric effects observed experime...