Author(s):
Stockem, A. 
; Fiuza, F. ; Fonseca, R. A. ; Silva, L. O.
Date: 2012
Persistent ID: http://hdl.handle.net/10071/7109
Origin: Repositório do ISCTE-IUL
Document details
The impact of kinetic effects on the properties of relativistic electron--posit...
Description
WOS:000312579500058 (Nº de Acesso Web of Science) “Prémio Científico ISCTE-IUL 2013” We assess the impact of non-thermally shock-accelerated particles on the magnetohydrodynamic (MHD) jump conditions of relativistic shocks. The adiabatic constant is calculated directly from first-principles particle-in-cell simulation data, enabling a semi-kinetic approach to improve the standard fluid model and allowing for an identification of the key parameters that define the shock structure. We find that the evolving upstream parameters have a stronger impact than the corrections due to non-thermal particles. We find that the decrease in the upstream bulk speed result in deviations from the standard MHD model up to 10%. Furthermore, we obtain a quantitative definition of the shock transition region from our analysis. For Weibel-mediated shocks the inclusion of a magnetic field in the MHD conservation equations is addressed for the first time.
WOS:000312579500058 (Nº de Acesso Web of Science) “Prémio Científico ISCTE-IUL 2013” We assess the impact of non-thermally shock-accelerated particles on the magnetohydrodynamic (MHD) jump conditions of relativistic shocks. The adiabatic constant is calculated directly from first-principles particle-in-cell simulation data, enabling a semi-kinetic approach to improve the standard fluid model and allowing for an identification of the key parameters that define the shock structure. We find that the evolving upstream parameters have a stronger impact than the corrections due to non-thermal particles. We find that the decrease in the upstream bulk speed result in deviations from the standard MHD model up to 10%. Furthermore, we obtain a quantitative definition of the shock transition region from our analysis. For Weibel-mediated shocks the inclusion of a magnetic field in the MHD conservation equations is addressed for the first time.
Document Type
Article
Language English
Language English
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