Details

Autor(en) / Beteiligte

• CHAPMAN, S. C
• LEE, R. E
• DENDY, R. O
• Chian, Abraham C-L (eds)
• Poedts, Stefaan
• Voitenko, Yuriy
• Goossens, Marcel

Titel

Perpendicular shock reformation and ion acceleration

Ist Teil von

• Space science reviews, 2005-11, Vol.121 (1-4), p.5-19

Ort / Verlag

Dordrecht: Springer

Erscheinungsjahr

2005

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Kinetic simulations of supercritical, quasi-perpendicular shocks yield time-varying solutions that cyclically reform on proton spatio-temporal scales. Whether a shock solution is stationary or reforming depends upon the plasma parameters which, for SNR shocks and the heliospheric termination shock, are ill defined but believed to be within this time-dependent regime. We first review the time-dependent solutions and the acceleration processes of the ions for a proton-electron plasma. We then present recent results for a three-component plasma: background protons, electrons and a second ion population appropriate for SNR (heavy ions) or the termination shock (pickup protons). This ion acceleration generates a suprathermal "injection" population - a seed population for subsequent acceleration at the shock, which may in turn generate ions at cosmic ray energies.