Transport of Photoelectrons in the Nightside Magnetosphere

Details Transport of Photoelectrons in the Nightside Magnetosphere Transport of Photoelectrons in the Nightside Magnetosphere

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm42a12k&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SM42A-12

Physics

2730 Magnetosphere--Inner, 2736 Magnetosphere/Ionosphere Interactions, 2752 Mhd Waves And Instabilities

Scientific paper

Kinetic modeling results are analyzed to examine the transport of photoelectrons through the nightside inner magnetosphere. A natural filter exists on the nightside for these particles, with Coulomb collisions eroding the distribution at low energies and low L shells, and magnetospheric convection compressing the flux tubes as they corotate towards dawn. This leads to an electron population with very distinctive features. It is shown that, for low activity levels, a band of photoelectrons forms between L=4 and 6 that extends throughout the nightside local times and into the morning sector. Modeled energy and pitch angle distributions are presented to show the development and features of this electron band, as well as their influences on the thermal plasma. Such a population should be observable in satellite spectrometer measurements.

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