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REINTERPRETATION OF SLOWDOWN OF SOLAR WIND MEAN VELOCITY IN NONLINEAR STRUCTURES OBSERVED UPSTREAM OF EARTH'S BOW SHOCK
G. K. Parks; E. Lee; N. Lin; S. Y. Fu; M. McCarthy; J. B. Cao; J. Hong; Y. Liu; J. K. Shi; M. L. Goldstein7; P. Canu8; I. Dandouras; H. R`eme; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationThe Astrophysical Journal
2013
Volume771Issue:2Pages:L39
ISSN0004-647X
Language英语
KeywordAcceleration Of Particles Shock Waves Solar Wind
AbstractTwo of the many features associated with nonlinear upstream structures are (1) the solar wind (SW) mean flow slows down and deviates substantially and (2) the temperature of the plasma increases in the structure. In this Letter, we show that the SW beam can be present throughout the entire upstream event maintaining a nearly constant beam velocity and temperature. The decrease of the velocity is due to the appearance of new particles moving in the opposite direction that act against the SW beam and reduce the mean velocity as computed via moments. The new population, which occupies a larger velocity space, also contributes to the second moment, increasing the temperature. The new particles include the reflected SW beam at the bow shock and another population of lower energies, accelerated nearby at the shock or at the boundary of the nonlinear structures.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1500
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
G. K. Parks,E. Lee,N. Lin,et al. REINTERPRETATION OF SLOWDOWN OF SOLAR WIND MEAN VELOCITY IN NONLINEAR STRUCTURES OBSERVED UPSTREAM OF EARTH'S BOW SHOCK[J]. The Astrophysical Journal,2013,771(2):L39.
APA G. K. Parks.,E. Lee.,N. Lin.,S. Y. Fu.,M. McCarthy.,...&北京8701信箱.(2013).REINTERPRETATION OF SLOWDOWN OF SOLAR WIND MEAN VELOCITY IN NONLINEAR STRUCTURES OBSERVED UPSTREAM OF EARTH'S BOW SHOCK.The Astrophysical Journal,771(2),L39.
MLA G. K. Parks,et al."REINTERPRETATION OF SLOWDOWN OF SOLAR WIND MEAN VELOCITY IN NONLINEAR STRUCTURES OBSERVED UPSTREAM OF EARTH'S BOW SHOCK".The Astrophysical Journal 771.2(2013):L39.
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