On The Origin of High-Energy Electrons in Cusp Diamagnetic Cavities

Details On The Origin of High-Energy Electrons in Cusp Diamagnetic Cavities On The Origin of High-Energy Electrons in Cusp Diamagnetic Cavities

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm31c..03n&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM31C-03

Physics

Plasma Physics

[2706] Magnetospheric Physics / Cusp, [2720] Magnetospheric Physics / Energetic Particles: Trapped, [2723] Magnetospheric Physics / Magnetic Reconnection, [7845] Space Plasma Physics / Particle Acceleration

Scientific paper

We have analyzed Cluster magnetic field and plasma data during a high-altitude cusp crossing. The Cluster separation was ≈5000 km and provided measurements of high energy particle properties both inside the diamagnetic cavity and surrounding magnetosheath. Most of the high energy electrons and protons had pitch angles of ≈90 degrees in the cavity and the high energy particle fluxes dropped as a function of distance from the cavity-sheath boundary. Assuming the conservation of first adiabatic invariant for electrons, our analysis indicates that most of the high-energy electrons in the diamagnetic cavity can not directly originate from the magnetosheath or from magnetosphere. These observations suggest that there may be a local acceleration mechanism in the cusp diamagnetic cavities. We will also present results from test particle simulations in high-resolution cusp model and discuss the possible acceleration mechanism. These results may have implications also for heating of the solar atmosphere, where the plasma can be captured in cusp-like coronal loops.

Affiliated with

Also associated with

No associations

Rating

On The Origin of High-Energy Electrons in Cusp Diamagnetic Cavities 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 On The Origin of High-Energy Electrons in Cusp Diamagnetic Cavities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On The Origin of High-Energy Electrons in Cusp Diamagnetic Cavities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1878544