HR: 10:20h
AN: SM32A-01 INVITED     [Abstracts]
TI: Particle acceleration from inductive electric fields associated with reconnection
AU: * Birn, J
EM: jbirn@lanl.gov
AF: Los Alamos national Laboratory, MS D466, Los Alamos, NM 87545 United States
AU: Hesse, M
EM: michael.hesse@nasa.gov
AF: NASA/Goddard Space Flight Center, Code 696, Greenbelt, MD 20771 United States
AU: Zaharia, S
EM: szaharia@lanl.gov
AF: Los Alamos national Laboratory, MS D466, Los Alamos, NM 87545 United States
AB: The concept of magnetic reconnection was first proposed by Giovanelli more than 50 years ago as a means to accelerate charged particles to high energies. The role of reconnection in accelerating particles has since remained a hot topic, which by no means has led to a settled paradigm. Here we provide insights from test particle calculations in dynamic fields that result from MHD simulations of reconnection in the magnetotail. We discuss typical acceleration mechanisms for ions and electrons, which include direct acceleration near the reconnection site as well as betatron and Fermi acceleration in the collapsing fields earthward from this site, and illustrate the resulting temporal and spatial distributions of energetic particles.
DE: 2716 Energetic particles: precipitating
DE: 2723 Magnetic reconnection (7526, 7835)
DE: 2790 Substorms
DE: 7514 Energetic particles (2114)
DE: 7845 Particle acceleration
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005