Constraining the Ratio of Micrometeoroids From Short- and Long-Period Comets at 1 AU From LADEE Observations of the Lunar Dust Cloud

doi:10.1002/2017GL076065

GSTDTAP > 气候变化

DOI	10.1002/2017GL076065
	Constraining the Ratio of Micrometeoroids From Short- and Long-Period Comets at 1 AU From LADEE Observations of the Lunar Dust Cloud
	Janches, Diego 1; Pokorny, Petr 1,2; Sarantos, Menelaos 3; Szalay, Jamey R.4; Horanyi, Mihaly 5; Nesvorny, David 6
	2018-02-28
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2018
卷号	45 期号:4 页码:1713-1722
文章类型	Article
语种	英语
国家	USA
英文摘要	We interpret recent observations of the secondary dust ejecta cloud around the Moon from the Lunar Dust Experiment (LDEX) on board the NASA Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft with help from dynamical models of meteoroids. Results suggest that in order to match the spatial structure of observed ejecta profiles, the flux of meteoroids on the Moon must be primarily provided by short-period comets with an excess ratio of at least 1.3:1 compared to long-period comets. This ratio increases significantly if the dependence of the ejecta yield on impactor velocity is stronger than generally believed. The model accounts for the orbital geometry of LADEE and shows no indication of a large asymmetry in the meteoroid flux impacting from the Helion and Anti-Helion directions.
英文关键词	Moon meteoroids comet dust
领域	气候变化
收录类别	SCI-E
WOS记录号	WOS:000427564300002
WOS关键词	RADAR
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/26249
专题	气候变化
作者单位	1.NASA, Goddard Space Flight Ctr, Space Weather Lab, Greenbelt, MD 20771 USA; 2.Catholic Univ Amer, Dept Phys & Astron, Washington, DC 20064 USA; 3.NASA, Goddard Space Flight Ctr, Geospace Phys Lab, Heliophys Sci Div, Greenbelt, MD USA; 4.Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA; 5.Univ Colorado, Dept Phys, Boulder, CO 80309 USA; 6.Southwest Res Inst, Boulder, CO USA
推荐引用方式 GB/T 7714	Janches, Diego,Pokorny, Petr,Sarantos, Menelaos,et al. Constraining the Ratio of Micrometeoroids From Short- and Long-Period Comets at 1 AU From LADEE Observations of the Lunar Dust Cloud[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(4):1713-1722.
APA	Janches, Diego,Pokorny, Petr,Sarantos, Menelaos,Szalay, Jamey R.,Horanyi, Mihaly,&Nesvorny, David.(2018).Constraining the Ratio of Micrometeoroids From Short- and Long-Period Comets at 1 AU From LADEE Observations of the Lunar Dust Cloud.GEOPHYSICAL RESEARCH LETTERS,45(4),1713-1722.
MLA	Janches, Diego,et al."Constraining the Ratio of Micrometeoroids From Short- and Long-Period Comets at 1 AU From LADEE Observations of the Lunar Dust Cloud".GEOPHYSICAL RESEARCH LETTERS 45.4(2018):1713-1722.