Electrostatic Waves Observed At and Near the Solar Wind Termination Shock By Voyager 2

2008 ◽  
Author(s):  
D. A. Gurnett ◽  
W. S. Kurth ◽  
L. F. Burlaga ◽  
M. H. Acuna ◽  
N. F. Ness ◽  
...  
Keyword(s):  
Solar Wind ◽  
Termination Shock ◽  
Electrostatic Waves ◽  
Voyager 2 ◽  
Solar Wind Termination Shock

scholarly journals Effects of the solar wind termination shock and heliosheath on theheliospheric modulation of galactic and anomalous Helium

2004 ◽  
Vol 22 (8) ◽  
pp. 3063-3072 ◽  
Author(s):  
U. W. Langner ◽  
M. S. Potgieter
Keyword(s):  
Solar Wind ◽  
Cosmic Ray ◽  
Magnetic Polarity ◽  
Termination Shock ◽  
Shock Acceleration ◽  
Diffusive Shock Acceleration ◽  
Cosmic Ray Modulation ◽  
Low Energies ◽  
Solar Wind Termination Shock ◽  
Charge Sign

Abstract. The interest in the role of the solar wind termination shock and heliosheath in cosmic ray modulation studies has increased significantly as the Voyager 1 and 2 spacecraft approach the estimated position of the solar wind termination shock. The effect of the solar wind termination shock on charge-sign dependent modulation, as is experienced by galactic cosmic ray Helium (He++) and anomalous Helium (He+), is the main topic of this work, and is complementary to the previous work on protons, anti-protons, electrons, and positrons. The modulation of galactic and anomalous Helium is studied with a numerical model including a more fundamental and comprehensive set of diffusion coefficients, a solar wind termination shock with diffusive shock acceleration, a heliosheath and particle drifts. The model allows a comparison of modulation with and without a solar wind termination shock and is applicable to a number of cosmic ray species during both magnetic polarity cycles of the Sun. The modulation of Helium, including an anomalous component, is also done to establish charge-sign dependence at low energies. We found that the heliosheath is important for cosmic ray modulation and that its effect on modulation is very similar for protons and Helium. The local Helium interstellar spectrum may not be known at energies

SENSING THE SOLAR-WIND TERMINATION SHOCK FROM EARTH'S ORBIT

1992 ◽  
pp. 365-368 ◽  
Author(s):  
K.C. Hsieh ◽  
K.L. Shih ◽  
J.R. Jokipii ◽  
M.A. Gruntman
Keyword(s):  
Solar Wind ◽  
Termination Shock ◽  
Solar Wind Termination Shock
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