PMO OpenIR  > 太阳和太阳系等离子体研究团组
GLOBAL DISTRIBUTION OF THE KINETIC SCALE MAGNETIC TURBULENCE AROUND THE MOON
Luo, Q. Y.1,2; Yang, L.1,3; Ji, J. H.1,2
2016
Source PublicationASTROPHYSICAL JOURNAL LETTERS
Volume816Issue:1
AbstractThe Moon-solar wind interaction results in the formation of a complicated lunar space plasma environment. Here, we investigate the solar wind turbulence around the Moon using the magnetic field observed by the dual-probe mission Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS). Structure functions in a time range on kinetic scales are computed to measure the scaling index., the spatial distribution of which reveals the global aspects of the lunar space plasma and shows the dependence on the local instability. On the lunar nightside, in the plasma void, the dominating magnetic pressure over the thermal pressure restrains the turbulence, and a quiet zone is built with xi << xi(0), where xi(0) = 0.36 is the scaling index in the ambient solar wind. Downstream in the lunar wake, xi is elevated gradually and goes above xi(0) at a radial distance of similar to 3R(m) (lunar radius), which implies that the plasma refilling process in the lunar wake begins to generate the local turbulence. On the dayside around the subsolar point, xi is enhanced at a low altitude of similar to 200 km, where the solar wind turbulence might be strengthened due to interaction with the lunar source plasma. The largest scaling indices lie around the day-night terminator with xi > 0.65, and the observed dawn-dusk asymmetry could be an effect of the magnetic field not being parallel with the solar wind. The correspondence between the enhanced scaling index and the local instability also raises new questions about the description of solar wind turbulence.
KeywordMagnetic Fields Methods: Data Analysis Moon Plasmas Solar Wind Turbulence
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3847/2041-8205/816/1/L3
WOS KeywordSOLAR-WIND TURBULENCE ; PLASMA ; INTERMITTENCY ; SURFACE ; WAKE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000369369900003
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16124
Collection太阳和太阳系等离子体研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Key Lab Planetary Sci, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Luo, Q. Y.,Yang, L.,Ji, J. H.. GLOBAL DISTRIBUTION OF THE KINETIC SCALE MAGNETIC TURBULENCE AROUND THE MOON[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,816(1).
APA Luo, Q. Y.,Yang, L.,&Ji, J. H..(2016).GLOBAL DISTRIBUTION OF THE KINETIC SCALE MAGNETIC TURBULENCE AROUND THE MOON.ASTROPHYSICAL JOURNAL LETTERS,816(1).
MLA Luo, Q. Y.,et al."GLOBAL DISTRIBUTION OF THE KINETIC SCALE MAGNETIC TURBULENCE AROUND THE MOON".ASTROPHYSICAL JOURNAL LETTERS 816.1(2016).
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