Other
Scientific paper
Nov 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005angeo..23.3389d&link_type=abstract
Annales Geophysicae, Volume 23, Issue 10, 2005, pp.3389-3398
Other
8
Scientific paper
We examine the nonlinear dynamics of electrons during the expansion phase of substorms at Mercury using test particle simulations. A simple model of magnetic field line dipolarization is designed by rescaling a magnetic field model of the Earth's magnetosphere. The results of the simulations demonstrate that electrons may be subjected to significant energization on the time scale (several seconds) of the magnetic field reconfiguration. In a similar manner to ions in the near-Earth's magnetosphere, it is shown that low-energy (up to several tens of eV) electrons may not conserve the second adiabatic invariant during dipolarization, which leads to clusters of bouncing particles in the innermost magnetotail. On the other hand, it is found that, because of the stretching of the magnetic field lines, high-energy electrons (several keVs and above) do not behave adiabatically and possibly experience meandering (Speiser-type) motion around the midplane. We show that dipolarization of the magnetic field lines may be responsible for significant, though transient, (a few seconds) precipitation of energetic (several keVs) electrons onto the planet's surface. Prominent injections of energetic trapped electrons toward the planet are also obtained as a result of dipolarization. These injections, however, do not exhibit short-lived temporal modulations, as observed by Mariner-10, which thus appear to follow from a different mechanism than a simple convection surge.
Delcourt Dominique C.
Miyoshi Yasunobu
Seki Kazuhiko
Terada Naoki
No associations
LandOfFree
Electron dynamics during substorm dipolarization in Mercury's magnetosphere does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Electron dynamics during substorm dipolarization in Mercury's magnetosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron dynamics during substorm dipolarization in Mercury's magnetosphere will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1835140