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Abstract:

A familiar feature of turbulence in a low collisionality turbulence is an increase in the electric field spectrum, relative to the magnetic field spectrum, at wavenumbers near the reciprocal of the ion inertial scale. This effect is commonly observed in the solar wind. Here we examine this feature numerically, using a variety of simulations, including compressible Hall MHD, incompressible Hall MHD, and one-, two-, and three-dimensional cases. A feature of this type is even found in a statistical Hall MHD model with no dissipation. This leads to the conclusion that the only requirement for obtaining this dispersive effect is the Hall term in the generalized Ohm's law. Therefore this observation does not distinguish between whistler and kinetic Alfvén waves, between waves and turbulence, nor even between fluid and kinetic plasma models. © 2010 American Institute of Physics.

Registro:

Documento: Conferencia
Título:Dispersive effects of Hall electric field in turbulence
Autor:Matthaeus, W.H.; Servidio, S.; Dmitruk, P.
Ciudad:Saint-Malo
Filiación:Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States
Dipartimento di Fisica, Universita' Della Calabria, Ponte P. Bucci Cubo 31C, Rende, CS 87036, Italy
Departimento de Física (FCEN-UBA), Buenos Aires, Argentina
Año:2010
Volumen:1216
Página de inicio:184
Página de fin:187
DOI: http://dx.doi.org/10.1063/1.3395832
Título revista:12th International Solar Wind Conference
Título revista abreviado:AIP Conf. Proc.
ISSN:0094243X
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_0094243X_v1216_n_p184_Matthaeus.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1216_n_p184_Matthaeus

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Citas:

---------- APA ----------
Matthaeus, W.H., Servidio, S. & Dmitruk, P. (2010) . Dispersive effects of Hall electric field in turbulence. 12th International Solar Wind Conference, 1216, 184-187.
http://dx.doi.org/10.1063/1.3395832
---------- CHICAGO ----------
Matthaeus, W.H., Servidio, S., Dmitruk, P. "Dispersive effects of Hall electric field in turbulence" . 12th International Solar Wind Conference 1216 (2010) : 184-187.
http://dx.doi.org/10.1063/1.3395832
---------- MLA ----------
Matthaeus, W.H., Servidio, S., Dmitruk, P. "Dispersive effects of Hall electric field in turbulence" . 12th International Solar Wind Conference, vol. 1216, 2010, pp. 184-187.
http://dx.doi.org/10.1063/1.3395832
---------- VANCOUVER ----------
Matthaeus, W.H., Servidio, S., Dmitruk, P. Dispersive effects of Hall electric field in turbulence. AIP Conf. Proc. 2010;1216:184-187.
http://dx.doi.org/10.1063/1.3395832