Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh42a0485r&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SH42A-0485
Physics
2716 Energetic Particles, Precipitating, 2720 Energetic Particles, Trapped, 7807 Charged Particle Motion And Acceleration
Scientific paper
The magnetic storm of November 24, 2001 was characterized by an increase in the energetic ion flux in the solar wind by more than an order of magnitude over a wide energy range. Following the increase in energetic ions in the solar wind, large increases in ion flux were observed by geosynchronous spacecraft, which was followed later by a substantial drop in DST. In addition, the dynamic pressure increased and the interplanetary magnetic field (IMF), particularly the y component, also increased in magnitude at about the same time as the geosynchronous spacecraft ion flux increased. The question we will address is how the upstream energetic ions contribute to the magnetic storm process and how their transport into the magnetosphere is determined by the magnetospheric configuration. The approach we use is to perform particle tracing calculations in the electric and magnetic fields from a global magnetohydrodynamic (MHD) simulation. We first performed an MHD simulation of this storm interval by using solar wind and IMF time series measured by upstream spacecraft which determine the upstream boundary conditions for the MHD simulation. Then we launched large number of test ions in the time-dependent electric and magnetic fields from the MHD simulation. The accessibility of magnetospheric regions to these ions as well as precipitation and trapping in the model will then be assessed. The flux of energetic particles from the calculations will be compared to the geosynchronous observations.
Ashour-Abdalla Maha
El-Alaoui Mostafa
Richard Robert L.
Walker Ray J.
No associations
LandOfFree
Solar Energetic Ion Entry into the Magnetosphere during a Magnetic Storm 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 Solar Energetic Ion Entry into the Magnetosphere during a Magnetic Storm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar Energetic Ion Entry into the Magnetosphere during a Magnetic Storm will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1646500