Colliding Alfvénic wave packets in magnetohydrodynamics, Hall and kinetic simulations

Abstract:

The analysis of the Parker-Moffatt problem, recently revisited in Pezzi et al. (Astrophys. J., vol. 834, 2017, p. 166), is here extended by including Hall magnetohydrodynamics and two hybrid kinetic Vlasov-Maxwell numerical models. The presence of dispersive and kinetic features is studied in detail and a comparison between the two kinetic codes is also reported. Focus on the presence of non-Maxwellian signatures shows that-during the collision-regions characterized by strong temperature anisotropy are recovered and the proton distribution function displays a beam along the direction of the magnetic field, similar to some recent observations of the solar wind.

Año de publicación:

2017

Keywords:

• Plasma Simulation
• Space plasma physics
• Astrophysical Plasmas

Fuente:

scopus

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