Diffuse Ion Scattering in front of the Earth's Quasi-Parallel Bow Shock: What Can We Learn from Cluster Simultaneous Multipoint Observations?

Details Diffuse Ion Scattering in front of the Earth's Quasi-Parallel Bow Shock: What Can We Learn from Cluster Simultaneous Multipoint Observations? Diffuse Ion Scattering in front of the Earth's Quasi-Parallel Bow Shock: What Can We Learn from Cluster Simultaneous Multipoint Observations?

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm51b1806k&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM51B-1806

Physics

Plasma Physics

[7845] Space Plasma Physics / Particle Acceleration, [7851] Space Plasma Physics / Shock Waves, [7867] Space Plasma Physics / Wave/Particle Interactions

Scientific paper

We analyze simultaneous multipoint observations of several diffuse ion events observed upstream of Earth’s quasi-parallel bow shock. Each upstream ion event is treated individually in order to determine the similarities and differences of the physical process of energetic ion scattering as a function of interplanetary magnetic field and plasma conditions. The data were provided by the CIS and the FGM instruments onboard Cluster SC1 and SC3 at times of large (i.e., 1-1.5 Re) interspacecraft separation distance. The diffuse ion partial density gradients were determined at different distances from the quasi-parallel bow shock along the magnetic field lines and the e-folding distances (and the diffusion coefficients) were calculated. Our results show that during times of quiet interplanetary magnetic field (IMF) conditions (i.e., when the IMF presents a substantial directional stability) the field aligned beam (FAB) intensity is high which has an impact on the diffuse ion scattering process. We demonstrate that high intensity FAB generated waves are convected deep in the foreshock region and scatter especially the lower energy (i.e., 10-18 keV) diffuse ions efficiently which results in unusually low e-folding distance (and diffusion coefficient). These new results reveal the complexity of the energetic ion scattering process in the foreschock region and help to understand the process of ion acceleration at Earth’s bow shock.

Affiliated with

Also associated with

No associations

Rating

Diffuse Ion Scattering in front of the Earth's Quasi-Parallel Bow Shock: What Can We Learn from Cluster Simultaneous Multipoint Observations? 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 Diffuse Ion Scattering in front of the Earth's Quasi-Parallel Bow Shock: What Can We Learn from Cluster Simultaneous Multipoint Observations?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffuse Ion Scattering in front of the Earth's Quasi-Parallel Bow Shock: What Can We Learn from Cluster Simultaneous Multipoint Observations? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1473665