The relation between the solar wind dynamic pressure at Voyager 2 and the energetic particle events at Voyager 1

Details The relation between the solar wind dynamic pressure at Voyager 2 and the energetic particle events at Voyager 1 The relation between the solar wind dynamic pressure at Voyager 2 and the energetic particle events at Voyager 1

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh42a..06r&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH42A-06

Physics

2104 Cosmic Rays, 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2114 Energetic Particles, Heliospheric (7514), 2124 Heliopause And Solar Wind Termination

Scientific paper

Voyager 1 energetic particle data suggest the recent close approach to, or crossing of, the termination shock. Although the plasma experiment on Voyager 1 is not providing useful data, plasma data from Voyager 2 may shed light on the plasma conditions at Voyager 1. Before the first particle event, Voyagers 1 and 2 see similar particle signatures. Voyager 2 pressure and energetic particle flux profiles have similar structure. Changes in the energetic particle flux at Voyager 1 are associated with merged interaction regions (MIRs) passing the spacecraft. Many MIRs are observed at both spacecraft, so Voyager 2 dynamic pressures may predict energetic particle changes at Voyager 1 and the movement of the termination shock near Voyager 1. The magnetic field strength and dynamic pressure are correlated at Voyager 2 so that changes in the magnetic field strength may serve as a proxy for dynamic pressure changes at Voyager 1.

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