DOI: 10.1002/2014GL061973
论文题名: Evidence for small-scale collisionless shocks at the Moon from ARTEMIS
作者: Halekas J.S. ; Poppe A.R. ; McFadden J.P. ; Angelopoulos V. ; Glassmeier K.-H. ; Brain D.A.
刊名: Geophysical Research Letters
ISSN: 0094-9635
EISSN: 1944-9366
出版年: 2014
卷: 41, 期: 21 起始页码: 7436
结束页码: 7443
语种: 英语
英文关键词: collisionless shocks
; Moon
Scopus关键词: Magnetic fields
; Moon
; Shock waves
; Solar wind
; Causal relationships
; Collisionless
; Collisionless shocks
; Crustal fields
; Crustal magnetic fields
; Discontinuity analysis
; Shock location
; Solar wind interactions
; Magnetoplasma
; collision
; discontinuity
; lunar crust
; magnetic field
; shock wave
; solar wind
英文摘要: ARTEMIS observes structures near the Moon that display many properties commonly associated with collisionless shocks, including a discontinuity with downstream compression of magnetic field and density, heating and wave activity, and velocity deflections away from the Moon. The two-probe ARTEMIS measurements show that these features do not exist in the pristine solar wind and thus must result from lunar influences. Discontinuity analyses indicate mass flux and heating across the boundary, with the normal velocity dropping from supermagnetosonic to submagnetosonic across the discontinuity. The shock location with respect to crustal magnetic fields suggests a causal relationship, implying that solar wind protons reflected from crustal fields may produce the observed structures. These observations may indicate some of the smallest shocks in the solar system (in terms of plasma scales), driven by solar wind interaction with magnetic fields on the order of the ion gyroradius and inertial length. Key Points ARTEMIS observes structures that have the properties of collisionless shocksLunar shocks may be driven by solar wind reflection from crustal magnetic fieldsLunar shocks may represent the smallest collisionless shocks in the solar system ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912080035&doi=10.1002%2f2014GL061973&partnerID=40&md5=c12bd4867919c642ccbe6f6f0aa8ab10
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6899
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States
Recommended Citation:
Halekas J.S.,Poppe A.R.,McFadden J.P.,et al. Evidence for small-scale collisionless shocks at the Moon from ARTEMIS[J]. Geophysical Research Letters,2014-01-01,41(21).