Statistical Properties and Stability of Electrostatic Solitary Waves Observed at Shock Crossings by the CLUSTER and CASSINI Spacecraft

Details Statistical Properties and Stability of Electrostatic Solitary Waves Observed at Shock Crossings by the CLUSTER and CASSINI Spacecraft Statistical Properties and Stability of Electrostatic Solitary Waves Observed at Shock Crossings by the CLUSTER and CASSINI Spacecraft

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm51a1620p&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM51A-1620

Statistics

2154 Planetary Bow Shocks, 2784 Solar Wind/Magnetosphere Interactions, 4455 Nonlinear Waves, Shock Waves, Solitons (0689, 2487, 3280, 3285, 4275, 6934, 7851, 7852), 7815 Electrostatic Structures, 7852 Solitons And Solitary Waves (4455)

Scientific paper

Nonlinear Electrostatic Solitary Waves (ESWs) are kinetic-scale structures which have been frequently observed in the bow shock transition region of Earth by the GEOTAIL and WIND spacecraft, as well as more recently by the four CLUSTER spacecraft. In addition, ESWs have also been reported to be present at the bow shock of Saturn, as well as at a crossing of an Interplanetary Shock, through observations by the CASSINI spacecraft. The characterization of these ESWs through statistics provides an insight into the state of the plasma in this region and a standard by which to compare the characteristics of ESWs observed through models and simulations. We provide the statistics of ESW amplitude and time duration for several quasi-perpendicular and quasi-parallel bow shock crossings by the CLUSTER spacecraft and compare these to the same parameters for the Saturn Bow Shock and Interplanetary Shock crossings. We also evaluate the antenna angle of detection with respect to the background magnetic field for these same crossings in order to further shed light on whether electron or ion dynamics are likely to dominate the process of ESW generation. We end our discussion of ESW characteristics by investigating the stability of ESWs through their propagation from one CLUSTER spacecraft to another.

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