Auroral particle acceleration processes: The legacy of Hannes Alfven

被引:4
作者
Lundin, R [1 ]
机构
[1] Swedish Inst Space Phys, S-98128 Kiruna, Sweden
来源
PHYSICS AND CHEMISTRY OF THE EARTH PART C-SOLAR-TERRESTIAL AND PLANETARY SCIENCE | 2001年 / 26卷 / 1-3期
关键词
D O I
10.1016/S1464-1917(00)00085-4
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Impacting corpuscular radiation was believed to be the main cause for the aurora even before the space age. However, the means by which charged particles become energized, eventually impacting into the upper atmosphere was a matter of controversy - a controversy which died out only very slowly with time. Hannes Alfven was the lead scientists in the 1950:ies and 1960:ies who dared to challenge the ruling paradigm of space plasma physics - by 1958 suggesting field-aligned electric "discharges" as the cause of the aurora. Field-aligned electric acceleration of charged particles became a matter of debate for nearly three decades with indirect proofs for its existence steadily mounting with time, yet all the time meeting strong objections. In retrospect one may wonder why rebutting was so important. Why clinging to the concept of infinite conductivity along magnetic field lines? The reason was simple, because it challenged a ruling paradigm in space plasma physics, requiring a strong modification of "ideal MHD".
引用
收藏
页码:13 / 23
页数:11
相关论文
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