Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073186 |
Observations of interplanetary dust by the Juno magnetometer investigation | |
Benn, M.1; Jorgensen, J. L.1; Denver, T.1; Brauer, P.1; Jorgensen, P. S.1; Andersen, A. C.2; Connerney, J. E. P.3,4; Oliversen, R.4; Bolton, S. J.5; Levin, S.6 | |
2017-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | Denmark; USA |
英文摘要 | One of the Juno magnetometer investigation's star cameras was configured to search for unidentified objects during Juno's transit en route to Jupiter. This camera detects and registers luminous objects to magnitude 8. Objects persisting in more than five consecutive images and moving with an apparent angular rate of between 2 and 18,000arcsec/s were recorded. Among the objects detected were a small group of objects tracked briefly in close proximity to the spacecraft. The trajectory of these objects demonstrates that they originated on the Juno spacecraft, evidently excavated by micrometeoroid impacts on the solar arrays. The majority of detections occurred just prior to and shortly after Juno's transit of the asteroid belt. This rather novel detection technique utilizes the Juno spacecraft's prodigious 60m(2) of solar array as a dust detector and provides valuable information on the distribution and motion of interplanetary (>m sized) dust. Plain Language Summary The Juno magnetometer investigation uses star cameras co-located with the magnetic sensors at the outer end of one of Juno's solar arrays. These cameras compare images with an onboard star catalog to determine the orientation of the sensors in inertial space. They also serendipitously recorded multiple images of small particles excavated from the spacecraft by high-velocity dust impacts. We trace their trajectories back in time to demonstrate that they evolved from the spacecraft. This allows us to use the vast collecting area of Juno's solar arrays (60m(2)) as a novel dust detector, sensitive to particles with a mass range never before measured in situ. |
英文关键词 | Juno interplanetary dust cruise phase |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131900039 |
WOS关键词 | SPACECRAFT ; PARTICLES ; IMPACTS |
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/25717 |
专题 | 气候变化 |
作者单位 | 1.Tech Univ Denmark, DTU Space, Kongens Lyngby, Denmark; 2.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, Copenhagen, Denmark; 3.Space Res Corp, Annapolis, MD 21403 USA; 4.NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA; 5.Southwest Res Inst, San Antonio, TX USA; 6.Jet Prop Lab, Pasadena, CA USA |
推荐引用方式 GB/T 7714 | Benn, M.,Jorgensen, J. L.,Denver, T.,et al. Observations of interplanetary dust by the Juno magnetometer investigation[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(10). |
APA | Benn, M..,Jorgensen, J. L..,Denver, T..,Brauer, P..,Jorgensen, P. S..,...&Levin, S..(2017).Observations of interplanetary dust by the Juno magnetometer investigation.GEOPHYSICAL RESEARCH LETTERS,44(10). |
MLA | Benn, M.,et al."Observations of interplanetary dust by the Juno magnetometer investigation".GEOPHYSICAL RESEARCH LETTERS 44.10(2017). |
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