Energetic Electrons Associated with Magnetic Reconnection in the Magnetic Cloud Boundary Layer

摘要

Here is reported in situ observation of energetic electrons (~100-500 keV)associated with magnetic reconnection in the solar wind by the ACE and Windspacecraft. The properties of this magnetic cloud driving reconnection and theassociated energetic electron acceleration problem are discussed. Furtheranalyses indicate that the electric field acceleration and Fermi type mechanismare two fundamental elements in the electron acceleration processes and thetrapping effect of the specific magnetic field configuration maintains theacceleration status that increases the totally gained energy.