TY - JOUR
T1 - Generation of Electron Acoustic Waves in the Topside Ionosphere From Coupling With Kinetic Alfven Waves
T2 - A New Electron Energization Mechanism
AU - Shi, Run
AU - Ni, Binbin
AU - Summers, Danny
AU - Liu, Huixin
AU - Yoshikawa, Akimasa
AU - Zhang, Beichen
PY - 2018/6/16
Y1 - 2018/6/16
N2 - Results from a new drift kinetic model in the topside ionosphere capture the mode conversion from kinetic Alfven waves to electron acoustic waves. When the kinetic Alfven waves propagate into the transition region, where the electron density of ionospheric origin becomes comparable to that of magnetospheric origin, the steep temperature gradient leads to the mode conversion. The electron acoustic waves are short-lived by dissipating their energy into the electron energization, thus revealing a new type of electron acceleration in the topside ionosphere.
AB - Results from a new drift kinetic model in the topside ionosphere capture the mode conversion from kinetic Alfven waves to electron acoustic waves. When the kinetic Alfven waves propagate into the transition region, where the electron density of ionospheric origin becomes comparable to that of magnetospheric origin, the steep temperature gradient leads to the mode conversion. The electron acoustic waves are short-lived by dissipating their energy into the electron energization, thus revealing a new type of electron acceleration in the topside ionosphere.
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U2 - 10.1029/2018GL077898
DO - 10.1029/2018GL077898
M3 - Article
AN - SCOPUS:85048961144
VL - 45
SP - 5299
EP - 5304
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 11
ER -