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Kinetic particle-in-cell simulations of asymmetric quasi-parallel mildly relativistic plasma collisions: Field and electron dynamics
Dublin Institute for Advanced Studies, Dublin 2, Ireland.
Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.ORCID iD: 0000-0003-4055-0552
Dublin Institute for Advanced Studies, Dublin 2, Ireland.
2010 (English)In: International Journal of Modern Physics D, ISSN 0218-2718, Vol. 19, no 6, 707-713 p.Article in journal (Refereed) Published
Abstract [en]

A gamma-ray burst (GRB) is triggered by a stellar implosion and the subsequent ejection of an ultrarelativistic jet. The prompt emissions are attributed to mildly relativistic collisions of plasma clouds within this jet. The resulting internal shocks are instrumental in the generation of the magnetic fields and the energetic electrons, which excite the observed electromagnetic emissions. We use particle-in-cell (PIC) simulations to examine such a shock. The colliding hot magnetized plasma clouds have densities that differ by a factor of 10. Current channels form rapidly in the 3D simulation, which resemble those in a Hammer–Rostoker equilibrium, are observed also in the 2D simulation. The 2D simulation also shows the formation of a shock, which is mediated by a strong electromagnetic wave, and the energy equipartition between electrons and ions.

Place, publisher, year, edition, pages
2010. Vol. 19, no 6, 707-713 p.
Keyword [en]
Shocks; gamma-ray bursts; simulations
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:liu:diva-57911DOI: 10.1142/S0218271810016737OAI: oai:DiVA.org:liu-57911DiVA: diva2:328543
Available from: 2010-07-05 Created: 2010-07-05 Last updated: 2017-12-12

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Dieckmann, Mark Eric

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