 |
| Titel |
Magnetic reconnection as an element of turbulence |
| VerfasserIn |
S. Servidio, P. Dmitruk, A. Greco, M. Wan, S. Donato, P. A. Cassak, M. A. Shay, V. Carbone, W. H. Matthaeus |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1023-5809
|
| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 18, no. 5 ; Nr. 18, no. 5 (2011-10-12), S.675-695 |
| Datensatznummer |
250013975
|
| Publikation (Nr.) |
 copernicus.org/npg-18-675-2011.pdf |
|
|
|
|
|
| Zusammenfassung |
| In this work, recent advances on the study of reconnection in turbulence are
reviewed. Using direct numerical simulations of decaying incompressible
two-dimensional magnetohydrodynamics (MHD), it was found that in fully
developed turbulence complex processes of reconnection locally occur
(Servidio et al., 2009, 2010a). In this complex scenario, reconnection is
spontaneous but locally driven by the fields, with the boundary conditions
provided by the turbulence. Matching classical turbulence analysis with a
generalized Sweet-Parker theory, the statistical features of these
multiple-reconnection events have been identified. A discussion on the
accuracy of our algorithms is provided, highlighting the necessity of
adequate spatial resolution. Applications to the study of solar wind
discontinuities are reviewed, comparing simulations to spacecraft
observations. New results are shown, studying the time evolution of these
local reconnection events. A preliminary study on the comparison between MHD
and Hall MHD is reported. Our new approach to the study of reconnection as an
element of turbulence has broad applications to space plasmas, shedding a new
light on the study of magnetic reconnection in nature. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|