期刊论文

Xiao, Fuliang

英文

GEOPHYSICAL RESEARCH LETTERS

0094-8276

2020

47

18

e2020GL089994-

10.1029/2020GL089994

This work is supported by the National Natural Science Foundation of China grants 41974212, 41531072, 41674166, and 41774194; the Hunan Provincial Natural Science Foundation of China grant 2018JJ2425; the Specialized Research Fund for State Key Laboratories; and the Construct Program of the Key Discipline in Hunan Province. The authors are thankful to the Van Allen Probe scientific instrument teams for making their data available to the public.

本校为第一且通讯机构

Chorus waves with the frequency usually between 0.1 and 0.8 equatorial electron gyrofrequency fce can accelerate energetic electrons to relativistic energies (several mega-electron volts, MeV). Here, we report a unique event that both regular chorus and unusual chorus with extremely low frequency (ELF) below 0.1 fce occurred during the 22 December 2014 geomagnetic storm. Relativistic electron fluxes decreased with decreasing wave frequency and had minima exactly corresponding to the presence of ELF chorus. Performing a two-dimensional simulatio...