期刊
SCIENCE
卷 362, 期 6410, 页码 46-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aat5434
关键词
-
资金
- Science and Technology Facilities Council (STFC) [ST/N000692/1]
- Royal Society Research Professorship [RP140004]
- NASA's CDAPS program [NNX15AL11G]
- NASA Jet Propulsion Laboratory (JPL) [1579625]
- STFC [ST/N000749/1]
- Royal Society Wolfson Research Merit Award
- NASA JPL [1409809, 1409806:033]
- JPL under University of Michigan [1416974]
- Cassini Project
- STFC [ST/N000749/1] Funding Source: UKRI
During 2017, the Cassini fluxgate magnetometer made in situ measurements of Saturn's magnetic field at distances similar to 2550 +/- 1290 kilometers above the 1-bar surface during 22 highly inclined Grand Finale orbits. These observations refine the extreme axisymmetry of Saturn's internal magnetic field and show displacement of the magnetic equator northward from the planet's physical equator. Persistent small-scale magnetic structures, corresponding to high-degree (>3) axisymmetric magnetic moments, were observed. This suggests secondary shallow dynamo action in the semiconducting region of Saturn's interior. Some high-degree magnetic moments could arise from strong high-latitude concentrations of magnetic flux within the planet's deep dynamo. A strong field-aligned current (FAC) system is located between Saturn and the inner edge of its D-ring, with strength comparable to the high-latitude auroral FACs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据