HR: 16:15h
AN: SH12C-02    [PDF]
TI: Hydromagnetic Wave Excitation at a Heliospheric Shock
AU: * Kallenbach, R
EM: kallenbach@issi.unibe.ch
AF: International Space Science Institute, Hallerstrasse 6, Bern, 3012 Switzerland
AU: Bamert, K
EM: bamert@soho.unibe.ch
AF: Physikalisches Institut, University of Bern, Sidlerstrasse 5, Bern, 3012 Switzerland
AU: Ness, N F
EM: nfness@bxclu.bartol.udel.edu
AF: Bartol Research Institute, University of Delware, Sharp Laboratory, Newark, DE 19716 United States
AU: Smith, C W
EM: chuck@bxclu.bartol.udel.edu
AF: Bartol Research Institute, University of Delware, Sharp Laboratory, Newark, DE 19716 United States
AU: Hilchenbach, M
EM: hilchenbach@linmpi.mpg.de
AF: Max-Planck Institute for Aeronomy, Max-Planck-Strasse 2, Katlenburg-Lindau, 37191 Germany
AU: Izmodenov, V
EM: izmod@ipmnet.ru
AF: Moscow State University, Vorobery Gory, Moscow, 119899 Russian Federation
AB: We present observational evidence for self-consistent wave-particle interaction upstream of the main interplanetary traveling shock driven by the Bastille Day coronal mass ejection. Spectra of protons in the energy range 300 keV to 2 MeV derived from SOHO/CELIAS/HSTOF data and the power spectral densities of the magnetic field fluctuations measured by the magnetometer onboard ACE are consistent with theoretical predictions on coupled hydromagnetic wave excitation by protons with asymmetric distribution near interplanetary traveling shocks. We discuss theoretical models and apply them to describe the generation of turbulent plasma waves in the outer heliosphere by Anomalous Cosmic Rays. These waves mediate the termination shock, which has impact on its structure and location. Lee, M.A., Coupled Hydromagnetic Wave Excitation and Ion Acceleration at Interplanetary Traveling Shocks, JGR 88, 1983, pp. 6109-6119
DE: 2100 INTERPLANETARY PHYSICS
DE: 2114 Energetic particles, heliospheric (7514)
DE: 2124 Heliopause and solar wind termination
DE: 2139 Interplanetary shocks
DE: 2159 Plasma waves and turbulence
SC: SPA - Solar and Heliospheric Physics [SH]
MN: 2003 Fall Meeting