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Latitudinal Density Dependence of Magnetic Field Lines Inferred from Polar Plasma Wave DataUsing observations of the electron density, n(sub e), based on measurement of the upper hybrid resonance frequency by the Polar spacecraft Plasma Wave Instrument, we have examined the radial density dependence along field lines in the outer plasmasphere and the near plasmatrough. Sampled L values range from 2.5 to 6.6. Our technique depends on the fact that Polar crosses particular L values at two different points with different radial distance R. In our plasmaspheric data set (n(sub e) > 100/cm3), we find that on average n(sub e) is flat along field lines from the equator up to the latitudes sampled by Polar (R approximately equal to or > 2.0). In the plasmatrough data set (n(sub e) < 100/cm-3), there is on average a mild radial dependence n(sub e) varies as R(exp -1.7).
Document ID
20000039378
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Goldstein, J.
(Dartmouth Coll. Hanover, NH United States)
Denton, R. E.
(Dartmouth Coll. Hanover, NH United States)
Hudson, M. K.
(Dartmouth Coll. Hanover, NH United States)
Miftakhova, E. G.
(Dartmouth Coll. Hanover, NH United States)
Menietti, J. D.
(Iowa Univ. Iowa City, IA United States)
Gallagher, D. L.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 2000
Subject Category
Plasma Physics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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