Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/7109
Author(s): | Stockem, A. Fiuza, F. Fonseca, R. A. Silva, L. O. |
Date: | 2012 |
Title: | The impact of kinetic effects on the properties of relativistic electron-positron shocks |
Volume: | 54 |
Number: | 12 |
Pages: | 125004 |
ISSN: | 0741-3335 |
DOI (Digital Object Identifier): | 10.1088/0741-3335/54/12/125004 |
Abstract: | 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. |
Peerreviewed: | yes |
Access type: | Open Access |
Appears in Collections: | CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Files in This Item:
File | Description | Size | Format | |
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Stockem 2012 Plasma Phys Controlled Fusion.pdf | 1,27 MB | Adobe PDF | View/Open |
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