HR: 15:00h
AN: SH43A-04    [Abstracts]
TI: Effects of Upstream Turbulent Fluctuations on the Termination Shock and Heliosheath
AU: * Jokipii, J R
EM: jokipii@lpl.arizona.edu
AF: Dept of Planetary Sciences University of Arizona, 1629 E. University Blvd, Tucson, AZ 85721, United States
AU: Giacalone, J
EM: giacalon@lpl.arizona.edu
AF: Dept of Planetary Sciences University of Arizona, 1629 E. University Blvd, Tucson, AZ 85721, United States
AB: The crossing of the solar-wind termination shock by the Voyager 1 spacecraft and the subsequent observations in the heliosheath have presented new challenges to our theoretical understanding of the physics of space plasmas and their interactions with energetic particles. Observations suggest strongly that the shock was moving rapidly inward at some 60-100 km/sec at the time of the termination shock crossing and that this motion continued for some time after the shock crossing. The termination-shock motions and flow patterns are likely to be significantly non-steady, and to vary with both time and space as a consequence of large-scale, pre-existing upstream turbulent fluctuations being convected across the shock. The shock motions, turbulence and non-radial flow downstream of the shock have important conseqences for the heliosheath magnetic field, and for the acceleration and transport of energetic particles. The consequences of these effects of large-scale upstream turbulence for the plasma, magnetic field and energetic particles in the inner heliosheath will be discussed.
DE: 7851 Shock waves (4455)
DE: 7863 Turbulence (4490)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Joint Assembly