Differential flow between protons and alphas in the solar wind: Prognoz 7 observations

Details Differential flow between protons and alphas in the solar wind: Prognoz 7 observations Differential flow between protons and alphas in the solar wind: Prognoz 7 observations

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....9923503y&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 99, no. A12, p. 23,503-23,504

Physics

2

Alpha Particles, Coronal Holes, Flow Velocity, Interplanetary Medium, Protons, Shock Waves, Solar Wind, Prognoz Satellites, Solar Corpuscular Radiation

Scientific paper

Solar wind data obtained with plasma experiement on the Prognoz 7 satellite have been reanalyzed to study the dependence of alpha particle and proton differential flow on both proton velocity Vp and the type of solar wind stream. It is found that velocity difference, Delta V = Valpha - Vp, increases with increasing Vp in streams from coronal holes and decreases in high-velocity streams behind interplanetary shocks and in coronal mass ejections. Thus the Prognoz 7 data do not contradict the results of earlier papers and confirm the conclusion that at 1 AU there is strong differential streaming in fast streams from coronal holes but not in fast streams from coronal mass ejections.

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