Artículo

Este artículo es de Acceso Abierto y puede ser descargado en su versión final desde nuestro repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

We review some of the recent results obtained in MHD turbulence, as encountered in many astrophysical objects.We focus attention on the lack of universality in such flows, including in the simplest case (no externally imposed magnetic field, no forcing, unit magnetic Prandtl number). Several parameters can foster such a breakdown of classical Kolmogorov scaling, such as the presence of velocity-magnetic field correlations, or of magnetic helicity and the role of the interplay between nonlinear eddies and Alfven waves. A link with avalanche processes is also discussed. These findings have led to the conjecture of the emergence of a new paradigm for MHD turbulence, as a possibly unsettled competition between several dynamical phenomena. © International Astronomical Union 2011.

Registro:

Documento: Artículo
Título:Lack of universality in mhd turbulence, and the possible emergence of a new paradigm?
Autor:Pouquet, A.; Brachet, M.-E.; Lee, E.; Mininni, P.; Rosenberg, D.; Uritsky, V.
Filiación:Geophysical Turbulence Program, National Center for Atmospheric Research, PO Box 3000, Boulder CO 80304, United States
Ecole Normale Superieure, 24 rue Lhomond, 75005 Paris, France
Centrum voor Plasma-Astrofysica, Departement Wiskunde, Katholieke Universiteit Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium
Departamento de Fsica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Physics and Astronomy Department, University of Calgary, Calgary, AB T2N1N4, Canada
Palabras clave:(magnetohydrodynamics:) MHD; (Sun:) solar wind; ISM: magnetic fields; Magnetic fields; Stars: activity; Sun: flares; Turbulence; Waves
Año:2010
Volumen:6
Número:S271
Página de inicio:304
Página de fin:316
DOI: http://dx.doi.org/10.1017/S174392131101773X
Título revista:Proceedings of the International Astronomical Union
Título revista abreviado:Proc. Int. Astron. Union
ISSN:17439213
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_17439213_v6_nS271_p304_Pouquet.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v6_nS271_p304_Pouquet

Referencias:

  • Plunian, F., Stepanov, R., (2006) J. Turbulence, 7, p. 39
  • Podesta, J.J., Roberts, D.A., Goldstein, M.L., (2007) Astrophys. J., 664, p. 543
  • Meneguzzi, M., Politano, H., Pouquet, A., Zolver, M., (1996) J. Comp. Phys., 123, p. 32
  • Kadomtsev, B.B., Pogutse, O.P., (1974) Z. Eksp. Teor. Fiz., 65, p. 575
  • Alexandrova, O., Mangeney, A., Maksimovic, M., Cornilleau-Wehrlin, N., Bosqued, J.-M., Andre, M., (2006) J. Geophys. Res., 111, pp. A12208
  • Lee, E., Brachet, M., Pouquet, A., Mininni, P., Rosenberg, D., (2008) Phys. Rev.E, 78, p. 066401
  • Whang Y, C., (2004) Nonlinear Processes Geophys., 11, p. 259

Citas:

---------- APA ----------
Pouquet, A., Brachet, M.-E., Lee, E., Mininni, P., Rosenberg, D. & Uritsky, V. (2010) . Lack of universality in mhd turbulence, and the possible emergence of a new paradigm?. Proceedings of the International Astronomical Union, 6(S271), 304-316.
http://dx.doi.org/10.1017/S174392131101773X
---------- CHICAGO ----------
Pouquet, A., Brachet, M.-E., Lee, E., Mininni, P., Rosenberg, D., Uritsky, V. "Lack of universality in mhd turbulence, and the possible emergence of a new paradigm?" . Proceedings of the International Astronomical Union 6, no. S271 (2010) : 304-316.
http://dx.doi.org/10.1017/S174392131101773X
---------- MLA ----------
Pouquet, A., Brachet, M.-E., Lee, E., Mininni, P., Rosenberg, D., Uritsky, V. "Lack of universality in mhd turbulence, and the possible emergence of a new paradigm?" . Proceedings of the International Astronomical Union, vol. 6, no. S271, 2010, pp. 304-316.
http://dx.doi.org/10.1017/S174392131101773X
---------- VANCOUVER ----------
Pouquet, A., Brachet, M.-E., Lee, E., Mininni, P., Rosenberg, D., Uritsky, V. Lack of universality in mhd turbulence, and the possible emergence of a new paradigm?. Proc. Int. Astron. Union. 2010;6(S271):304-316.
http://dx.doi.org/10.1017/S174392131101773X