Additional Features of the Plasma Environment in the Heliosheath and Outer Heliosphere: Further Examination of the Voyager 2 Plasma Observations

Details Additional Features of the Plasma Environment in the Heliosheath and Outer Heliosphere: Further Examination of the Voyager 2 Plasma Observations Additional Features of the Plasma Environment in the Heliosheath and Outer Heliosphere: Further Examination of the Voyager 2 Plasma Observations

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh21a1500i&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SH21A-1500

Physics

[2124] Interplanetary Physics / Heliopause And Solar Wind Termination, [2126] Interplanetary Physics / Heliosphere/Interstellar Medium Interactions, [2144] Interplanetary Physics / Interstellar Gas, [2164] Interplanetary Physics / Solar Wind Plasma

Scientific paper

We continue our examination of the plasma distributions obtained by the MIT plasma probe on Voyager 2 in 2007. Last year we presented an identification of High Energy Ions (HEIs) in the plasma data in the vicinity of the termination shock. These HEIs are reminiscent of the multiple reflected gyrating and pickup protons observed in the vicinity of planetary foreshocks. We continue to examine some of the details of the MIT plasma data and to compare these plasma data with other in-situ spacecraft measurements including with the enhanced signals in the plasma wave subsystem. We also evaluate our findings in terms of theoretical expectations. Our detailed analyses show that in 2007, in the vicinity of Voyager 2, the characteristics of the outer heliosphere and heliosheath were quite complex with variations occurring on many scales and indicating the need for further theoretical and empirical study. This work is sponsored by NASA Grant NNX08AE40G and by Carmel Research Center. We are grateful to John Richardson for providing the Voyager 2 MIT plasma data.

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