Simultaneous Wave and Particle Data at Interplanetary Shocks Observed by Wind

Details Simultaneous Wave and Particle Data at Interplanetary Shocks Observed by Wind Simultaneous Wave and Particle Data at Interplanetary Shocks Observed by Wind

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsh41a..19w&link_type=abstract

American Geophysical Union, Spring Meeting 2008, abstract #SH41A-19

Mathematics

Probability

2139 Interplanetary Shocks, 2159 Plasma Waves And Turbulence, 7513 Coronal Mass Ejections (2101), 7851 Shock Waves (4455), 7867 Wave/Particle Interactions (2483, 6984)

Scientific paper

Wave and particle data obtained at interplanetary (IP) shocks provide an excellent opportunity to study shock dissipation mechanisms at low Mach number shocks. Most previous studies have been done at the usually high Mach number bow shock. Recent Vlasov simulations using realistic mass ratios (Hellinger et. al. [2004], Petkaki et. al. [2006]) have argued for reconsideration of the importance of wave-particle resistivity in collisionless shocks. Simultaneous observations of waveform captures in association with electron particle distributions can offer new insights into the mechanisms which dissipate energy at IP shocks. Preliminary results show ion-acoustic waves simultaneously with anisotropic electron distributions, consistent with theory and observations in the terrestrial foreshock. We have previously reported the high probability of occurrence of large amplitude (> 5 mV/m) ion-acoustic waves in the transition regions of IP shocks. We will present simultaneous wave, plasma, and high-time resolution magnetic field data from the Wind/MFI instrument for a select number of IP shocks. Our results will be compared to theory and simulations.

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