Examination of the Voyager 2 Plasma Observations in the Vicinity of the Termination Shock

Details Examination of the Voyager 2 Plasma Observations in the Vicinity of the Termination Shock Examination of the Voyager 2 Plasma Observations in the Vicinity of the Termination Shock

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh21b1609i&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SH21B-1609

Other

2124 Heliopause And Solar Wind Termination, 2126 Heliosphere/Interstellar Medium Interactions, 2134 Interplanetary Magnetic Fields, 2144 Interstellar Gas, 2164 Solar Wind Plasma

Scientific paper

We examine the plasma distributions obtained by the MIT plasma probe on Voyager 2 in 2007. These are the first plasma data obtained in the vicinity of the termination shock. The Voyager 2 plasma observations (Richardson et al., Nature, 454, July 2008,doi:10.10338, p.63) were somewhat surprising. Richardson et al. reported that following the termination shock crossing the solar wind flow did not become subsonic as expected. Rather Richardson et al. reported the solar wind flow slowed, but still remained supersonic. We examine some of the details of the MIT plasma data. We compare the plasma data with other in-situ spacecraft measurements. The results also are evaluated in terms of theoretical expectations. Our detailed analyses show that the time periods around the reported termination shock crossings are more complex and revealing than earlier believed. 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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