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Ann. Geophys., 26, 2749-2758, 2008
https://doi.org/10.5194/angeo-26-2749-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
15 Sep 2008
Comparison of multi-point measurements of current sheet structure and analytical models
A. V. Artemyev1, A. A. Petrukovich1, L. M. Zelenyi1, H. V. Malova1,2, V. Y. Popov1,3, R. Nakamura4, A. Runov5, and S. Apatenkov6 1Space Research Institute, Russian Academy of Sciences, Moscow, Russia
2Nuclear Physics Institute, Moscow State University, Russia
3Faculty of Physics, Moscow State University, Russia
4Space Research Institute, Austrian Academy of sciences, Graz, Austria
5Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, USA
6St. Petersburg University, St. Petersburg, Russia
Abstract. Current density profiles of 22 thin current sheets, crossed by four Cluster spacecraft in the magnetotail are compared with the self-consistent model of anisotropic 1-D equilibrium, including several species of quasi-adiabatic (transient) ions and drifting electrons. In order to examine ion-scale features of the current density profile Cluster data from the 2001 and 2004 tail seasons were used when the spacecraft separation was about 2000 and 1000 km, respectively, while electron-scale features are studied using Cluster data from the 2003 season , when the spacecraft separation was about 200 km. The model ion and electron current density peaks embedded in a background plasma sheet successfully reproduce observed profiles. Stability criteria of the model current sheet are also consistent with the experiment.

Citation: Artemyev, A. V., Petrukovich, A. A., Zelenyi, L. M., Malova, H. V., Popov, V. Y., Nakamura, R., Runov, A., and Apatenkov, S.: Comparison of multi-point measurements of current sheet structure and analytical models, Ann. Geophys., 26, 2749-2758, https://doi.org/10.5194/angeo-26-2749-2008, 2008.
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