Vlasov simulations of collisionless magnetic reconnection without background density

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dc.creatorSchmitz, H.
dc.creatorGrauer, R.
dc.date2006-12-08
dc.date.accessioned2026-07-07T07:35:00Z
dc.date.available2026-07-07T07:35:00Z
dc.descriptionA standard starting point for the simulation of collisionless reconnection is the Harris equilibrium which is made up of a current sheet that separates two regions of opposing magnetic field. Magnetohydrodynamic simulations of collisionless reconnection usually include a homogeneous background density for reasons of numerical stability. While, in some cases, this is a realistic assumption, the background density may introduce new effects both due to the more involved structure of the distribution function or due to the fact that the Alfvèn speed remains finite far away from the current sheet. We present a fully kinetic Vlasov simulation of the perturbed Harris equilibrium using a Vlasov code. Parameters are chosen to match the Geospace Environment Modeling (GEM) Magnetic Reconnection Challenge but excluding the background density. This allows to compare with earlier simulations [Schmitz, Grauer, Phys. Plasmas 13 (2006) 092309] which include the background density. It is found that the absence of a background density causes the reconnection rate to be higher. On the other hand, the time until the onset of reconnection is hardly affected. Again the off diagonal elements of the pressure tensor are found to be important on the X--line but with modified importance for the individual terms.
dc.descriptionto appear in Communications in Nonlinear Science and Numerical Simulation
dc.identifierhttps://arxiv.org/abs/physics/0612082
dc.identifierhttp://arxiv.org/abs/physics/0612082
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/119963
dc.subjectPlasma Physics
dc.subjectComputational Physics
dc.titleVlasov simulations of collisionless magnetic reconnection without background density
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