The recent spacecraft observations by MMS and Van Allen Probes associated with electromagnetic ion cyclotron (EMIC) waves in the Earth magnetosphere emphasize important role of multi-ion plasma composition for generation characteristics these emissions. We show that main properties coherent EMIC can be explained concept “multi-ion oscillitons” (Sauer et al., 2001, https://doi.org/10.1029/2001GL...

We present an analysis of the relativistic electron precipitation (REP) event measured by CALorimetric Electron Telescope (CALET) experiment on board International Space Station during a relatively weak geomagnetic storm 31 December 2016. CALET observations were compared with measurements Van Allen Probes in near-equatorial plane to investigate global radiation belt dynamics and REP drivers. Th...

Electromagnetic ion cyclotron (EMIC) waves have long been thought to contribute significantly the variability of Earth's outer radiation belt because their ability scatter relativistic (>0.5 MeV) electrons into loss cone on short timescales. We investigate statistically such pitch angle scattering signatures (“bite-outs”) and quantitative agreement with cold plasma theory. Our analysis is based...

Van Allen Probes measurements revealed the presence of most unusual structures in ultra-relativistic radiation belts. Detailed modeling, analysis pitch angle distributions, difference between relativistic and ultra-realistic electron evolution, along with theoretical studies scattering wave growth, all indicate that electromagnetic ion cyclotron (EMIC) waves can produce a very efficient loss el...

It is widely believed that the electromagnetic ion cyclotron (EMIC) waves play an important role in influencing radiation belt and ring current dynamics. Most studies investigated effects or characteristics of EMIC assuming their left-handed polarization. However, recent found polarization reversal, which occurs at higher latitudes along wave propagation path, can change wave-induced pitch angl...

Modulated high frequency radio frequency heating of the ionospheric F-region produces a local modulation of the electron temperature, and the resulting pressure gradient gives rise to a diamagnetic current. The oscillations of the diamagnetic current excite hydromagnetic waves in the ELF range that propagate away from the heated region. The generation of the waves in the 2 – 10 Hz range by a mo...

Electromagnetic ion cyclotron (EMIC) waves can cause the scattering loss of relativistic electrons in radiation belt. They be classified into guided mode and unguided mode, according to wave's propagation behavior. The have been widely investigated belt, but observation not expected. Based on observations Van Allen Probes, we demonstrate for first time existence intense L-mode EMIC belt polariz...

In this Commentary, I bring together the findings of articles in special issue, and advocate for an expanded temporal spatial application concept ‘post-socialism’. My focus is also on ongoing political ideological value as a useful emic analytical means critiquing capitalism.