Magnetospheric Multiscale Satellite Observations of Parallel Electron Acceleration in Magnetic Field Reconnection by Fermi Reflection from Time Domain Structures.

Academic Article

Abstract

  • The same time domain structures (TDS) have been observed on two Magnetospheric Multiscale Satellites near Earth's dayside magnetopause. These TDS, traveling away from the X line along the magnetic field at 4000  km/s, accelerated field-aligned ∼5  eV electrons to ∼200  eV by a single Fermi reflection of the electrons by these overtaking barriers. Additionally, the TDS contained both positive and negative potentials, so they were a mixture of electron holes and double layers. They evolve in ∼10  km of space or 7 ms of time and their spatial scale size is 10-20 km, which is much larger than the electron gyroradius (<1  km) or the electron inertial length (4 km at the observation point, less nearer the X line).
  • Authors

  • Mozer, FS
  • Agapitov, OA
  • Artemyev, A
  • Burch, JL
  • Ergun, RE
  • Giles, BL
  • Mourenas, D
  • Torbert, Roy
  • Phan, TD
  • Vasko, I
  • Status

    Publication Date

  • April 8, 2016
  • Has Subject Area

    Published In

    Digital Object Identifier (doi)

    Pubmed Id

  • 27104714
  • Start Page

  • 145101
  • Volume

  • 116
  • Issue

  • 14