Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh51b..01s&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SH51B-01
Other
2104 Cosmic Rays, 2124 Heliopause And Solar Wind Termination, 2126 Heliosphere/Interstellar Medium Interactions
Scientific paper
The global structure of the heliosphere is shaped by its interaction with the local interstellar medium (LISM). Different interstellar pressures in the northern and southern hemispheres are indicated by Voyager 2 observations that suggest the termination shock is 6 to 10 AU closer in the south than in the north. Such a north/south asymmetry likely results from an interstellar magnetic field that also causes an east/west distortion in the shock as indicated by the opposite flow directions of energetic termination shock particle observed by the two spacecraft. The source location of the 3 kHz radio emissions originating near the heliopause is also an indication of the orientation of the interstellar magnetic field. The interaction with the LISM is further reflected in the magnetic field and energetic particles observed in the heliosheath by Voyager 1. Within the next year, Voyager 2 will likely cross the termination shock, providing new observations of the plasma flow and revealing other possible asymmetries in the heliosheath.
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