Magnetic turbulence and particle dynamics in the Earth's magnetotail

被引：11
|
作者：
Zimbardo, G
Greco, A
Taktakishvili, AL
Veltri, P
Zelenyi, LM
机构：
[1] Univ Calabria, Dept Phys, I-87036 Arcavacata Di Rende, Italy
[2] Abastumani Astrophys Observ, GE-380060 Tbilisi, Georgia
[3] Inst Space Res, Moscow 117810, Russia
[4] Ist Nazl Fis Mat, Unita Cosenza, Cosenza, Italy
来源：
ANNALES GEOPHYSICAE | 2003年 / 21卷 / 09期
关键词：
magnetospheric physics; magnetospheric configuration and dynamics; interplanetary physics; MHD waves and turbulence; electromagnetics; numerical methods;
D O I：
10.5194/angeo-21-1947-2003
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The influence of magnetic turbulence in the near-Earth magnetotail on ion motion is investigated by numerical simulation. The magnetotail current sheet is modelled as a magnetic field reversal with a normal magnetic field component B-n plus a three-dimensional spectrum of magnetic fluctuations BB which represents the observed magnetic turbulence. The dawn-dusk electric field E-y is also considered. A test particle simulation is performed using different values of B, and of the fluctuation level deltaB/B-0. We show that when the magnetic fluctuations are taken into account, the particle dynamics is deeply affected, giving rise to an increase in the cross tail transport, ion heating, and current sheet thickness. For strong enough turbulence, the current splits in two layers, in agreement with recent Cluster observations.
引用
收藏
页码：1947 / 1953
页数：7
相关论文
共 50 条
  • [1] c Magnetic Reconnection, Turbulence, and Particle Acceleration: Observations in the Earth's Magnetotail
    Ergun, R. E.
    Goodrich, K. A.
    Wilder, F. D.
    Ahmadi, N.
    Holmes, J. C.
    Eriksson, S.
    Stawarz, J. E.
    Nakamura, R.
    Genestreti, K. J.
    Hesse, M.
    Burch, J. L.
    Torbert, R. B.
    Phan, T. D.
    Schwartz, S. J.
    Eastwood, J. P.
    Strangeway, R. J.
    Le Contel, O.
    Russell, C. T.
    Argall, M. R.
    Lindqvist, P. -A.
    Chen, L. J.
    Cassak, P. A.
    Giles, B. L.
    Dorelli, J. C.
    Gershman, D.
    Leonard, T. W.
    Lavraud, B.
    Retino, A.
    Matthaeus, W.
    Vaivads, A.
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (08) : 3338 - 3347
  • [2] Particle Acceleration in Strong Turbulence in the Earth's Magnetotail
    Ergun, R. E.
    Ahmadi, N.
    Kromyda, L.
    Schwartz, S. J.
    Chasapis, A.
    Hoilijoki, S.
    Wilder, F. D.
    Cassak, P. A.
    Stawarz, J. E.
    Goodrich, K. A.
    Turner, D. L.
    Pucci, F.
    Pouquet, A.
    Matthaeus, W. H.
    Drake, J. F.
    Hesse, M.
    Shay, M. A.
    Torbert, R. B.
    Burch, J. L.
    [J]. ASTROPHYSICAL JOURNAL, 2020, 898 (02):
  • [3] Magnetic turbulence and ion dynamics in the magnetotail
    Taktakishvili, AL
    Greco, A
    Veltri, P
    Zimbardo, G
    Zelenyi, LM
    Milovanov, AV
    [J]. ASTROPHYSICS AND SPACE SCIENCE, 2001, 277 (1-2) : 71 - 79
  • [4] Magnetic Turbulence and Ion Dynamics in the Magnetotail
    A.L. Taktakishvili
    A. Greco
    P. Veltri
    G. Zimbardo
    L.M. Zelenyi
    A.V. Milovanov
    [J]. Astrophysics and Space Science, 2001, 277 : 71 - 79
  • [5] Spontaneous Magnetic Fluctuations and Collisionless Regulation of Turbulence in the Earth's Magnetotail
    Espinoza, C. M.
    Moya, P. S.
    Stepanova, M.
    Valdivia, J. A.
    Navarro, R. E.
    [J]. ASTROPHYSICAL JOURNAL, 2022, 924 (01):
  • [6] Particle chaos in the Earth's magnetotail
    Dusenbery, Paul B.
    Martin, Richard F., Jr.
    Burkhart, Grant R.
    [J]. CHAOS, 1992, 2 (03) : 427 - 446
  • [7] Modeling of Magnetic Dipolarizations and Turbulence in Earth’s Magnetotail as Factors of Plasma Acceleration and Transfer
    E. I. Parkhomenko
    H. V. Malova
    V. Yu. Popov
    E. E. Grigorenko
    A. A. Petrukovich
    L. M. Zelenyi
    E. A. Kronberg
    [J]. Cosmic Research, 2018, 56 : 453 - 461
  • [8] Modeling of Magnetic Dipolarizations and Turbulence in Earth's Magnetotail as Factors of Plasma Acceleration and Transfer
    Parkhomenko, E. I.
    Malova, H. V.
    Popov, V. Yu.
    Grigorenko, E. E.
    Petrukovich, A. A.
    Zelenyi, L. M.
    Kronberg, E. A.
    [J]. COSMIC RESEARCH, 2018, 56 (06) : 453 - 461
  • [9] Effect of magnetic turbulence on the ion dynamics in the distant magnetotail
    Veltri, P
    Zimbardo, G
    Taktakishvili, AL
    Zelenyi, LM
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1998, 103 (A7): : 14897 - 14910
  • [10] Ion dynamics in the near-Earth magnetotail: Magnetic turbulence versus normal component of the average magnetic field
    Greco, A
    Taktakishvili, AL
    Zimbardo, G
    Veltri, P
    Zelenyi, LM
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2002, 107 (A10)
12345