Radial diffusion of relativistic electrons in Neptune's magnetosphere

Details Radial diffusion of relativistic electrons in Neptune's magnetosphere Radial diffusion of relativistic electrons in Neptune's magnetosphere

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.1579s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 15, p. 1579-1582

Astronomy and Astrophysics

Astronomy

4

Astronomical Models, Electron Diffusion, Electrons, Neptune (Planet), Planetary Magnetospheres, Radial Flow, Relativistic Particles, Atmospheric Circulation, Diffusion Coefficient, Mathematical Models, Neptune Atmosphere

Scientific paper

Measurements of greater than or = 1 MeV electrons in Neptune's magnetosphere from L approximately = 4 to 14 are well represented by solutions of a model radial diffusion equation that includes losses due to absorption by the satellite Proteus. The model provides estimates of the radial diffusion coefficient, which is 5 x 10-8 (L/5)8/s, and the outer boundary energy spectrum, which is an exponential with an e-folding energy of 0.1 MeV. The diffusion coefficient is consistent with theoretical estimates based on the assumption that diffusion is driven by atmospheric neutral winds.

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