Physics
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98...13r&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A1, p. 13-32.
Physics
66
Energetic Particles, Heliosphere, Ion Distribution, Satellite Observation, Solar Activity, Solar Wind Velocity, Abundance, Interplanetary Space, Particle Trajectories, Plasma Dynamics
Scientific paper
The properties of MeV/amu ions in 64 corotating streams at and inside 1 AU associated with corotating high-speed streams from 1978 to 1986 during presolar maximum to near solar minimum conditions are discussed. Around 50 percent of the streams include significant ion intensity enhancements not associated with solar particle events or traveling interplanetary shocks. The ions stream nearly along the E x B drift direction in the spacecraft frame, corresponding to a weak sunward field-aligned streaming in the solar wind frame. The sunward streaming is consistent with particle acceleration in the outer heliosphere followed by diffusion into the inner heliosphere. The ion intensity is not correlated with the stream solar wind speed or with the increase in solar wind speed at the leading edge of the high-speed stream, suggesting that the local shock strength alone may not play a dominant role in determining the intensity.
Barbier Loius M.
Reames Donald. V.
Richardson Ian G.
von Rosenvinge Tycho T.
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