FisMat2017 - Submission - View

Abstract's title: Current sheets with inhomogeneous plasma temperature: Effects of polarization electric field and 2D solutions
Submitting author: Filomena Catapano
Affiliation: LPP/ UPMC, France
Affiliation Address: 4 place Jussieu, 75005 Paris
Country: France
Oral presentation/Poster (Author's request): Poster
Other authors and affiliations: Gaetano Zimbardo (Dipartimento di Fisica, Università della Calabria, Rende, Cosenza, Italy), Anton V. Artemyev (Space Research Institute, RAS, Moscow, Russia), Ivan Y. Vasko (Space Research Institute, RAS, Moscow, Russia)

We develop current sheet models which allow to regulate the level of plasma temperature and
density inhomogeneities across the sheet. These models generalize the classical Harris model via
including two current-carrying plasma populations with different temperature and the background
plasma not contributing to the current density. The parameters of these plasma populations
allow regulating contributions of plasma density and temperature to the pressure balance. A brief
comparison with spacecraft observations demonstrates the model applicability for describing the
Earth magnetotail current sheet. We also develop a two dimensional (2D) generalization of the
proposed model. The interesting effect found for 2D models is the non-monotonous profile (along
the current sheet) of the magnetic field component perpendicular to the current sheet. Possible
applications of the model are discussed.