Voyager Observations of Interplanetary Shocks

Details Voyager Observations of Interplanetary Shocks Voyager Observations of Interplanetary Shocks

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..781..278r&link_type=abstract

THE PHYSICS OF COLLISIONLESS SHOCKS: 4th Annual IGPP International Astrophysics Conference. AIP Conference Proceedings, Volume

Astronomy and Astrophysics

Astrophysics

1

Shock Waves, Interplanetary Matter, Solar Wind, Space Research, Acceleration, Planetary Bow Shocks, Interplanetary Shocks, Particle Emission, Solar Wind, Spaceborne And Space Research Instruments, Apparatus, And Components

Scientific paper

Data from Voyager 2 are used to compile a shock catalogue covering the 27 years of Voyager 2 solar wind data through the end of 2004. This catalogue is used to investigate the characteristics of shocks as a function of distance out to 75 AU. The shock occurrence frequency decreases with distance. Reverse shocks are most prevalent between 3 and 10 AU. The shock speed is solar cycle dependent with the highest speeds just after solar maxima. Shock strengths decrease with distance but do not show a strong solar cycle dependence. In the outer heliosphere shocks are often associated with merged interaction regions. As in the inner heliosphere, the relationship between the shocks and energetic particle fluxes is highly variable, with no apparent acceleration at some shocks and strong acceleration at others.

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