Computer Science
Scientific paper
Mar 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1216..576f&link_type=abstract
TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE. AIP Conference Proceedings, Volume 1216, pp. 576-578 (2010).
Computer Science
Solar Wind, Shock Wave Effects, Cosmic Rays, Magnetohydrodynamics, Particle Emission, Solar Wind, Planetary Bow Shocks, Interplanetary Shocks, Cosmic Rays, Magnetohydrodynamics And Plasmas
Scientific paper
Energetic particle measurements made by Voyager 2 during its crossing of the heliospheric termination shock had distinctive features of a locally shock-accelerated component in the energy range between 1 and 3.5 MeV. Intensities of energetic ions rose exponentially upstream of the shock and were accompanied by a deceleration of the bulk plasma flow. Our analysis of the Voyager 2 shock precursor shows that the termination shock was in a rare state known as a cosmic-ray-mediated shock, where plasma slowdown in the precursor is produced by a positive energetic particle radial pressure gradient. The amount of deceleration in the last 40 days of the precursor was about 13% (by dynamic pressure), which is consistent with earlier model predictions. However, the precursor was narrower than predicted by these models, which assumed dominance of a high-energy anomalous cosmic-ray component.
Decker Robert B.
Florinski Vladimir
Zank Gary P.
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