Electron Microbursts Induced by Nonducted Chorus Waves

Microbursts, short-lived but intense electron precipitation observed by low-Earth-orbiting satellites, may contribute significantly to the losses of energetic electrons in outer radiation belt. Their origin is likely due whistler mode chorus waves, as evidenced a strong overlap spatial correlation two. Despite previous efforts on modeling bursty induced most, if not all, rely assumption that waves are ducted along field line with zero wave normal angle. Such ducting limited cases when fine-scale plasma density irregularities present. In contrast, propagate nonducted way plasmas smoothly varying density, allowing normals gradually refract away from magnetic line. this study, interaction and investigated using test particle simulation. Substantial differences transport found between two different scenarios, resultant patterns compared. comparison valuable for interpreting low Earth-orbiting satellite observations flux variation response magnetospheric waves.