Plasma flows in the heliosheath

Details Plasma flows in the heliosheath Plasma flows in the heliosheath

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3610102r&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 10, CiteID L10102

Physics

10

Global Change: Global Climate Models (3337, 4928), Global Change: Climate Dynamics (0429, 3309), Atmospheric Processes: Climate Change And Variability (1616, 1635, 3309, 4215, 4513), Global Change: Water Cycles (1836)

Scientific paper

Voyager 2 is making the first plasma measurements in the heliosheath. The radial flow speeds in the heliosheath vary between 80 and 200 km/s with an average speed of 138 km/s. The flow in the T (azimuthal) direction is fairly constant and averages about 48 km/s; the flow direction is consistent with flow away from the heliospheric nose. Flow in the N (meridional) direction is also away from the nose and averages -14 km/s. These flows suggest that the shock is blunter in the T than in the N direction, so that the heliosphere is wider than it is high. The flow in the RN plane has quasi-periodic oscillation with a period of 110 days and an amplitude of 21 km/s. The oscillation in flow angle is about 6° in the RN plane and 17° in the TN plane and may result from periodic variations of the termination shock normal direction.

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