Formation of Macroscale Flux Transfer Events at Mercury
Formation of Macroscale Flux Transfer Events at Mercury
复制标题
水星宏观通量传输事件的形成
DOI:
10.3847/2041-8213/ab8566
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发表时间:
2020-04
期刊:
影响因子:
--
通讯作者:
W.X.Wan
中科院分区:
文献类型:
--
作者:
J.Zhong;Y.Wei;L.C.Lee;J.S.He;J.A.Slavin;Z.Y.Pu;H.Zhang;X.G.Wang;W.X.Wan
Flux transfer events (FTEs) are magnetic flux ropes that are produced via magnetic reconnection at the planetary magnetopause where the solar wind directly interacts with the magnetosphere. Previous observations show that FTEs with a duration of several seconds, corresponding to a spatial scale of ∼0.5–1 RM, can occur at Mercury. However, the formation of these macroscale FTEs at a small dimensional magnetopause with a radius of ∼1.5 RM remains unclear. Here, we report the observations of active magnetic reconnection events at Mercury’s magnetopause by the MESSENGER spacecraft. The reconnection process is dominated by the formation of a series of multi-scale FTEs. Ion-scale flux ropes, typically with durations of ∼1 s or less, may be produced by the tearing instability in the thin current sheet near the subsolar position. Moreover, the commonly observed macroscale FTEs consist of three to tens of successive small-scale FTEs. We propose that macroscale FTEs at Mercury are generated by the interaction and merging of multiple ion-scale flux ropes, probably through two or more steps. This is distinct from the formation of typical FTEs, mainly between a pair of X-lines, at Earth’s magnetopause. Thus, the formation and evolution of FTEs may differ among planetary magnetospheres with a vast range of scale sizes. We further conclude that Mercury’s magnetopause is a natural plasma laboratory to study flux rope dynamics and evolution for the upcoming Bepi-Colombo mission.
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影响因子:
5.2
作者:
H. Hasegawa;J. Wang;M. Dunlop;Zuyin Pu;Qinghe Zhang;B. Lavraud;Matthew Taylor;O. D. Constantinescu;J. Berchem;V. Angelopoulos;J. Mcfadden;Harald U. Frey;E. Panov;M. Volwerk;Y. Bogdanova
通讯作者:
H. Hasegawa;J. Wang;M. Dunlop;Zuyin Pu;Qinghe Zhang;B. Lavraud;Matthew Taylor;O. D. Constantinescu;J. Berchem;V. Angelopoulos;J. Mcfadden;Harald U. Frey;E. Panov;M. Volwerk;Y. Bogdanova
DOI:
10.1029/2019ja026892
发表时间:
2019-08
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
--
作者:
J. Slavin;H. R. Middleton;J. Raines;X. Jia;J. Zhong;Weijie Sun;S. Livi;S. Imber;G. Poh;M. Akhavan-Tafti;J. Jasinski;G. DiBraccio;Chuanfei Dong;R. Dewey;M. L. Mays
通讯作者:
J. Slavin;H. R. Middleton;J. Raines;X. Jia;J. Zhong;Weijie Sun;S. Livi;S. Imber;G. Poh;M. Akhavan-Tafti;J. Jasinski;G. DiBraccio;Chuanfei Dong;R. Dewey;M. L. Mays
影响因子:
--
作者:
C. Russell;R. Walker
通讯作者:
C. Russell;R. Walker
影响因子:
2.2
作者:
S. Markidis;P. Henri;G. Lapenta;A. Divin;M. Goldman;David E. Newman;S. Eriksson
通讯作者:
S. Markidis;P. Henri;G. Lapenta;A. Divin;M. Goldman;David E. Newman;S. Eriksson
影响因子:
8.6
作者:
M. Øieroset;T. Phan;J. Eastwood;Masaki Fujimoto;W. Daughton;M. Shay;V. Angelopoulos;F. Mozer;J. Mcfadden;D. Larson;K. Glassmeier
通讯作者:
M. Øieroset;T. Phan;J. Eastwood;Masaki Fujimoto;W. Daughton;M. Shay;V. Angelopoulos;F. Mozer;J. Mcfadden;D. Larson;K. Glassmeier