Magnetotail plasma eruptions driven by magnetic reconnection and kinetic instabilities
Magnetotail plasma eruptions driven by magnetic reconnection and kinetic instabilities
复制标题
磁重联和动力学不稳定性驱动的磁尾等离子体喷发
DOI:
10.1038/s41561-023-01206-2
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发表时间:
2023
影响因子:
18.3
通讯作者:
Battarbee, Markus
中科院分区:
文献类型:
--
作者:
Palmroth, Minna;Pulkkinen, Tuija I.;Ganse, Urs;Pfau-Kempf, Yann;Koskela, Tuomas;Zaitsev, Ivan;Alho, Markku;Cozzani, Giulia;Turc, Lucile;Battarbee, Markus
Rapid plasma eruptions explosively release energy within Earth’s magnetosphere, at the Sun and at other planets. At Earth, these eruptions, termed plasmoids, occur in the magnetospheric nightside and are associated with sudden brightening of the aurora. The chain of events leading to the plasmoid is one of the longest-standing unresolved questions in space physics. Two competing paradigms have been proposed to explain the course of events. The first asserts that magnetic reconnection changes the magnetic topology in the tail, severing a part of the magnetosphere as plasmoid. The second employs kinetic instabilities that first disrupt the current sheet supporting the magnetotail and launch waves that trigger the topological change to eject the plasmoid. Here we numerically simulate Earth’s magnetosphere at realistic scales using a model that captures the physics underlying both paradigms. We show that both magnetic reconnection and kinetic instabilities are required to induce a global topological reconfiguration of the magnetotail, thereby combining the seemingly contradictory paradigms. Our results help to understand how plasma eruptions may take place, guide spacecraft constellation mission design to capture these ejections in observations and lead to improved understanding of space weather by improving the predictability of the plasmoids.
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DOI:
10.1002/2015ja021526
发表时间:
2015-04
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
--
作者:
M. Palmroth;M. Archer;R. Vainio;H. Hietala;Y. Pfau‐Kempf;S. Hoilijoki;O. Hannuksela;U. Ganse;A. Sandroos;S. Alfthan;J. Eastwood
通讯作者:
M. Palmroth;M. Archer;R. Vainio;H. Hietala;Y. Pfau‐Kempf;S. Hoilijoki;O. Hannuksela;U. Ganse;A. Sandroos;S. Alfthan;J. Eastwood
影响因子:
--
作者:
G. Lapenta;J. Brackbill
通讯作者:
G. Lapenta;J. Brackbill
DOI:
10.1007/bf02711653
发表时间:
1968-06
期刊:
Il Nuovo Cimento B (1965-1970)
影响因子:
--
作者:
M. Dobrowolny
通讯作者:
M. Dobrowolny
影响因子:
1.9
作者:
R. Schödel;K. Dierschke;Wolfgang Baumjohann;R. Nakamura;T. Mukai
通讯作者:
T. Mukai
影响因子:
2.8
作者:
Rae, I. J.;Watt, C. E. J.;Angelopoulos, V.
通讯作者:
Angelopoulos, V.