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Exact Vlasov-Maxwell equilibria for asymmetric current sheets by Allanson, O.; Wilson, F.; Neukirch, T.; Liu, Y. -H.; Hodgson, J. D. B. is a scholarly article available to read on EtoBox.

What is Exact Vlasov-Maxwell equilibria for asymmetric current sheets about?

The NASA Magnetospheric Multiscale mission has made in situ diffusion region and kinetic-scale resolution measurements of asymmetric magnetic reconnection for the first time, in the Earth's magnetopause. The principal theoretical tool currently used to model collisionless asymmetric reconnection is particle-in-cell simulations. Many particle-in-cell simulations of asymmetric collisionless reconnection start from an asymmetric Harris-type magnetic field but with distribution functions that are not exact equilibrium solutions of the Vlasov equation. We present new and exact equilibrium solutions of the Vlasov-Maxwell system that are self-consistent with one-dimensional asymmetric current sheets, with an asymmetric Harris-type magnetic field profile, plus a constant nonzero guide field. The distribution functions can be represented as a combination of four shifted Maxwellian distribution functions. This equilibrium describes a magnetic field configuration with more freedom than the previously known exact solution and has different bulk flow properties.

Author

Allanson, O.; Wilson, F.; Neukirch, T.; Liu, Y. -H.; Hodgson, J. D. B.

Published

2017

Language

EN