HR: 1340h
AN: SH53A-1258    [Abstracts]
TI: Cluster Measurements of Low Frequency Waves at the Terrestrial Bow Shock and the Problem of Cosmic Ray Acceleration at Supernova Remnant (SNR) Related Shocks.
AU: * Bates, I
EM: i.bates@sheffield.ac.uk
AF: ACSE, University of Sheffield , Sheffield, S1 3JD United Kingdom
AU: Hobara, Y
EM: yasu@irf.se
AF: ACSE, University of Sheffield , Sheffield, S1 3JD United Kingdom
AU: Walker, S
EM: simon.walker@sheffield.ac.uk
AF: ACSE, University of Sheffield , Sheffield, S1 3JD United Kingdom
AU: Pokhotelov, O A
EM: o.a.pokhotelov@sheffield.ac.uk
AF: ACSE, University of Sheffield , Sheffield, S1 3JD United Kingdom
AU: Dunlop, M W
EM: m.w.dunlop@rl.ac.uk
AF: Space Science Division, Rutherford Appleton Lab, Didcot, OX11 United Kingdom
AB: Plasma waves and fluctuations in the vicinity of collisionless shocks are crucial to most of the mechanisms proposed to explain cosmic ray acceleration. Wave observations in the foreshock are key in for the Fermi type of acceleration. Lower hybrid waves can be generated by instabilities associated with reflected ions at Quasi-perpendicular shock. These waves can be in resonance interaction both with ions and electrons simultaneously, therefore they are very effective in the transfer of energy from the ion bulk motion to the acceleration of electrons. The only shock that allows comprehensive in-situ measurements is the terrestrial bow shock. Multi-point measurements in the vicinity of the terrestrial bow shock enable the identification of the composition of the observed turbulence. The results of such an identification are used to validate models proposed for particle acceleration at SNR related shocks.
DE: 7829 Kinetic waves and instabilities
DE: 7845 Particle acceleration
DE: 7851 Shock waves (4455)
DE: 7863 Turbulence (4490)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: Fall Meeting 2005