SM41E-2539
Relationship Between Dipolarizations and Energetic Particle Injections in Earth’s Inner Magnetosphere
Thursday, 17 December 2015
Poster Hall (Moscone South)
Christopher John Hartline1,2, Matina Gkioulidou1, Shinichi Ohtani1, Aleksandr Y Ukhorskiy1, Kazue Takahashi1, Donald G Mitchell3 and Louis J Lanzerotti4, (1)Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States, (2)Rensselaer Polytechnic Institute, Troy, NY, United States, (3)JHU/APL, Laurel, MD, United States, (4)New Jersey Institute of Technology, Edison, NJ, United States
Abstract:
Energetic particle injections in Earth’s magnetotail are associated with sharp dipolarizations of magnetic field, which are often referred to as dipolarization fronts. Particle experiments of the Van Allen Probes missions observed multiple energetic particle injection signatures inside the geosynchronous orbit, which resemble particle injections in the magnetotail. It is not evident, however, whether these events are attributed to the magnetic field dipolarizations considering how strong the background magnetic field is. Similar signatures could be attributed to the boundary crossings, i.e., when the spacecraft are crossing from the inner magnetosphere into the plasma sheet. To investigate the nature of the injection-like events observed by Van Allen Probes in the inner magnetosphere we first identify them with the use of the energetic particle measurements from the RBSPICE experiment. We then explore their relationship to the magnetic field dipolarizations and boundary crossings by examining the magnetic field data from the EMFISIS instrument.
