Multipoint observations of plasma distributions around an X line
Fazakerley, A. N.; Owen, C. J.; Nakamura, R.; Fujimoto, M.; Lucek, E. A.; Takada, T.; Baumjohann, W.; Asano, Y.; Rème, H.; Runov, A.; Shinohara, I.; Nagai, T.
Japan, Austria, United Kingdom, France
Abstract
Using electron and magnetic field data obtained from the Cluster satellites, we identify the spatial distribution of highly accelerated electron distributions up to 10 keV. They are generally isotropic and form flat-top distributions in the phase space. These distributions are observed in the vicinity of the X line associated with the quadrupole-like magnetic field and energetic ions, throughout the plasma sheet. In some cases, these distributions are quasi-stable, continuously observed for a few minutes with a stable Bz polarity and low current density in the center of the plasma sheet.