Latitudinal density dependence of magnetic field lines inferred from Polarplasma wave data

Citation
J. Goldstein et al., Latitudinal density dependence of magnetic field lines inferred from Polarplasma wave data, J GEO R-S P, 106(A4), 2001, pp. 6195-6201
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN journal
2169-9380 → ACNP
Volume
106
Issue
A4
Year of publication
2001
Pages
6195 - 6201
Database
ISI
SICI code
0148-0227(20010401)106:A4<6195:LDDOMF>2.0.ZU;2-7
Abstract
Using observations of the electron density n(e) based on measurement of the upper hybrid resonance frequency by the Polar spacecraft Plasma Wave Instr ument, we have examined the radial density dependence along field lines in the outer plasmasphere and the near plasma trough. Our technique depends, o n the fact that Polar crosses particular L values at two different points w ith different radial distance R. Sampled L values range from 2.5 to 6.3. In our plasmaspheric data set (n(e) greater than or equal to 100 cm(-3)) we f ind that, on average, n(e) is flat along field lines from the equator up to the latitudes sampled by Polar (R greater than or similar to 2 R-E) In the plasma trough data set (n(e) < 100 cm(-3)) there is, on average, a mild ra dial dependence n(e) <proportional to> R-1.7.