Mathematics – Probability
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cosre..47..449c&link_type=abstract
Cosmic Research, Volume 47, Issue 6, pp.449-459
Mathematics
Probability
1
Scientific paper
Characteristics of polar wind fluxes at a height of ˜20000 km measured by the Hyperboloid mass-spectrometer installed onboard the Interball-2 satellite are presented in the paper. The characteristics are presented for the upwelling flows of ionospheric ions H+, He+, and O+ from the sunlit polar cap in the period of solar activity minimum. Orbit segments with minimal precipitation of magnetospheric ions and electrons were preliminarily selected, and the measurements where the fluxes of ions coming from the cusp/cleft were excluded as carefully as possible. Thus, the densities, field-aligned velocities, and temperatures of ions in the regions where fluxes of polar wind could be detected with the maximal probability degree are presented in the paper. It is found that cases when only H+ ions are reaching the detector are with high probability the polar wind outflows. Their characteristics agree well with the Tube-7 hydrodynamic model and are as follows: n ≈ 1.5 cm-3, V ∥ ˜ 21 km/s; T ∥ = 3500 K, and T ⊥ = 2000 K. In cases when He+ and O+ ions are also detected, the temperatures are substantially higher than the model ones, and the measured field-aligned velocities of O+ fluxes are several times higher than the model ones. Moreover, it was revealed that the polar wind outflows are predominantly observed in the polar cap regions where the polar rain fluxes are very small.
No associations
LandOfFree
Characteristics of thermal ion outflows in the polar cap according to data of the Interball-2 satellite 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 Characteristics of thermal ion outflows in the polar cap according to data of the Interball-2 satellite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characteristics of thermal ion outflows in the polar cap according to data of the Interball-2 satellite will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1886995