Abstract:
Theoretical models of magnetic reconnection have been traditionally developed within the framework of magnetohydrodynamics (MHD). However, in low-density astrophysical plasmas like those found in the magnetopause and the magnetotail, kinetic effects such as the Hall current are expected to play a significant role. We present results from externally driven magnetic reconnection simulations, within the framework of incompressible Hall MHD in 2 1/2 dimensions. We evaluate the relevance of the Hall current in the reconnection process by performing a set of simulations with different values of the Hall parameter. We compute the corresponding reconnection rates as a function of time and explore the spatial structure of the fields in the surroundings of the diffusion region. Copyright 2005 by the American Geophysical Union.
Registro:
Documento: |
Artículo
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Título: | Hall effect in incompressible magnetic reconnection |
Autor: | Morales, L.F.; Dasso, S.; Gómez, D.O. |
Filiación: | Instituto de Astronomía y Física del Espacio (IAFE), Departamento de Física, Universidad de Buenos Aires, Buenos Aires, Argentina Instituto de Astronomía y Física del Espacio (IAFE), CC 67 Suc. 28, 1428 Buenos Aires, Argentina
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Año: | 2005
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Volumen: | 110
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Número: | A4
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DOI: |
http://dx.doi.org/10.1029/2004JA010675 |
Título revista: | Journal of Geophysical Research: Space Physics
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Título revista abreviado: | J. Geophys. Res. A. Space Phys.
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ISSN: | 21699402
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_21699402_v110_nA4_p_Morales |
Referencias:
- Birn, J., Hesse, M., Details of current disruption and diversion in simulations of magnetotail dynamics (1996) J. Geophys. Res., 101, pp. 15,345
- Birn, J., Geospace Environmental Modeling (GEM) magnetic reconnection challenge (2001) J. Geophys. Res., 106, p. 3715
- Biskamp, D., (2000) Magnetic Reconnection in Plasmas, Cambridge Monogr. on Plasma Phys., , Cambridge Univ. Press, New York
- Craig, I.J.D., Heerikhuisen, J., Watson, P.G., Hall current effects in dynamic magnetotail reconnection solutions (2003) Phys. Plasmas, 10, p. 3120
- Deng, X.H., Matsumoto, H., Rapid magnetic reconnection in the Earth's magnetosphere mediated by whistler waves (2001) Nature, 410, p. 557
- Dorelli, J.C., Effects of Hall electric fields on the saturation of forced antiparallel magnetic field margin (2003) Phys. Plasmas, 10, p. 3309
- Gosling, J.T., Birn, J., Hesse, M., Three-dimensional magnetic reconnection and the magnetic topology of coronal mass ejection events (1995) Geophys. Res. Lett., 22, p. 869
- Hesse, M., Birn, J., Kuznetsova, M., Collisionless magnetic reconnection: Electron processes and transport modeling (2001) J. Geophys. Res., 106, p. 3721
- Ma, Z., Bhattacharjee, A., Hall magnetohydrodynamic reconnection: The geospace environment modeling challenge (2001) J. Geophys. Res., 106, p. 3773
- McComb, W.D., (1990) The Physics of Fluid Turbulence, , Clarendon Press, Oxford, UK
- Minnini, P., Gomez, D.O., Mahajan, S.M., Dynamo action in magnetohydrodynamics and Hall-magnetohydrodynamics (2003) Astrophys. J., 584, p. 1120
- Mozer, F., Bale, S., Phan, T.D., Evidence of diffusion regions at a subsolar magnetopause crossing (2002) Phys. Rev. Lett., 89, p. 015002
- Øieroset, M., In situ detection of collisionless reconnection in the Earth's magnetotail (2001) Nature, 412, p. 414
- Otto, A., Geospace Environment Modeling (GEM) magnetic reconnection challenge: MHD and Hall-MHD constant and current dependent resistivity models (2001) J. Geophys. Res., 106, p. 3751
- Parker, E.N., Sweet's mechanism for merging magnetic fields in conducting fluids (1957) J. Geophys. Res., 62, p. 509
- Paschmann, G., Plasma acceleration at the Earth's magnetopause: Evidence for reconnection (1979) Nature, 282, p. 243
- Petschek, H.E., Magnetic annihilation (1964) AAS/NASA Symposium on the Physics of Solar Flares, p. 425. , edited by W. N. Ness, NASA, Washington, D. C
- Phan, T.D., Evidence for an extended reconnection line at the dayside magnetopause (2000) Nature, 404, p. 848
- Priest, E.R., Magnetic reconnection at the Sun (1984) Magnetic Reconnection in Space and Laboratory Plasmas, Geophys. Monogr. Ser., 30, p. 63. , edited by E. W. Hones, AGU, Washington, D. C
- Scudder, J., Theoretical approaches to the description of magnetic merging: The need for finite, anisotropic, ambipolar Hall MHD (1997) Space Sci. Rev., 80, p. 235
- Sonnerup, B.U.O., Evidence for magnetic field reconnection at the Earth's magnetopause (1981) J. Geophys. Res., 86, pp. 10,049
- Terasawa, T., Hall current effect on tearing mode instability (1984) Geophys. Res. Lett., 10, p. 475
- Wang, X., Bhattacharje, A., Ma, Z.W., Collisionless reconnection: Effects of Hall current and electron pressure gradient (2000) J. Geophys. Res., 105, pp. 27,633
Citas:
---------- APA ----------
Morales, L.F., Dasso, S. & Gómez, D.O.
(2005)
. Hall effect in incompressible magnetic reconnection. Journal of Geophysical Research: Space Physics, 110(A4).
http://dx.doi.org/10.1029/2004JA010675---------- CHICAGO ----------
Morales, L.F., Dasso, S., Gómez, D.O.
"Hall effect in incompressible magnetic reconnection"
. Journal of Geophysical Research: Space Physics 110, no. A4
(2005).
http://dx.doi.org/10.1029/2004JA010675---------- MLA ----------
Morales, L.F., Dasso, S., Gómez, D.O.
"Hall effect in incompressible magnetic reconnection"
. Journal of Geophysical Research: Space Physics, vol. 110, no. A4, 2005.
http://dx.doi.org/10.1029/2004JA010675---------- VANCOUVER ----------
Morales, L.F., Dasso, S., Gómez, D.O. Hall effect in incompressible magnetic reconnection. J. Geophys. Res. A. Space Phys. 2005;110(A4).
http://dx.doi.org/10.1029/2004JA010675