In situ evidence of resonant interactions between energetic electrons and whistler waves in magnetopause reconnection

作者：Zhi Li,QuanMing Lu,RongSheng Wang,XinLiang Gao,HuaYue Chen

摘要：In this paper,we analyze one reconnection event observed by the Magnetospheric Multiscale(MMS)mission at the earth’s magnetopause.In this event,the spacecraft crossed the reconnection current sheet from the magnetospheric side to the magnetosheath side,and whistler waves were observed on both the magnetospheric and magnetosheath sides.On the magnetospheric side,the whistler waves propagated quasi-parallel to the magnetic field and toward the X-line,while on the magnetosheath side they propagated almost anti-parallel to the magnetic field and away from the X-line.Associated with the enhancement of the whistler waves,we find that the fluxes of energetic electrons are concentrated around the pitch angle 90°when their energies are higher than the minimum energy that is necessary for the resonant interactions between the energetic electrons and whistler waves.This observation provides in situ observational evidence of resonant interactions between energetic electrons and whistler waves in the magnetic reconnection.

發文機構：Chinese Academy Sciences Key Laboratory of Geospace Environment Chinese Academy Sciences Center for Excellence in Comparative Planetology

關鍵詞：magneticRECONNECTIONWHISTLERwavesMAGNETOSPHEREENERGETICELECTRONS

分類號： P[天文地球]