Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh13c..01s&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH13C-01
Physics
[2104] Interplanetary Physics / Cosmic Rays, [2124] Interplanetary Physics / Heliopause And Solar Wind Termination, [2126] Interplanetary Physics / Heliosphere/Interstellar Medium Interactions
Scientific paper
Voyager 1 and 2 are in the northern and southern latitudes and 119 and 97 AU from the sun, deep within the heliosheath where the interaction between the interstellar and solar winds is evolving rapidly with increasing distance. The Voyagers observe the direction and speed of the solar wind plasma as it approaches the heliopause, the evolution of the magnetic field intensity and the latitudinal extension of the heliospheric current sheet, and the changing intensities of termination shock particles, anomalous cosmic rays, and cosmic rays. Observations indicate that Voyager 1 entered a new region in the heliosheath at 113 AU with essentially no outward plasma flow and small, declining non-radial flows. This doldrums-like pattern suggests that Voyager 1 is nearing the heliopause. An overview of recent observations, interpretations, and estimates of the distance to the heliopause will be discussed.
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