How Jupiter's Unusual Magnetospheric Topology Structures Its Aurora
Binzheng Zhang, Peter A. Delamere, Zhonghua Yao, Bertrand Bonfond, D. Lin, Kareem A. Sorathia, Oliver J. Brambles, William Lotko, Jeff S. Garretson, Viacheslav … 展开作者
Binzheng Zhang, Peter A. Delamere, Zhonghua Yao, Bertrand Bonfond, D. Lin, Kareem A. Sorathia, Oliver J. Brambles, William Lotko, Jeff S. Garretson, Viacheslav G. Merkin, Denis Grodent, William R. Dunn, John G. Lyon
Jupiter's bright persistent polar aurora and Earth's dark polar region indicate that the planets' magnetospheric topologies are very different. High-resolution global simulations show that the reconnection rate at the interface between the interplanetary and jovian magnetic fields is too slow to generate a magnetically open, Earth-like polar cap on the timescale of planetary rotation, resulting in only a small crescent-shaped region of magnetic flux interconnected with the interplanetary magnetic field. Most of the jovian polar cap is threaded by helical magnetic flux that closes within the planetary interior, extends into the outer magnetosphere and piles-up near its dawnside flank where fast differential plasma rotation pulls the field lines sunward. This unusual magnetic topology provides new insights into Jupiter's distinctive auroral morphology.
Enhanced C$_2$H$_2$ absorption within Jupiter's southern auroral oval from Juno UVS observations
朱诺号航天器上的紫外线分光仪反射的太阳光观测被用来研究木星南极乙炔(C $_2$ H $_2$)的分布。我们发现,C $_2$ H $_2$吸收特征的形状在整个极地地区变化显著,这可以用来推断C $_2$ H $_2$丰度的空间变异性。有一个局部区域的增强C $_2$ H $_2$的吸收,这与木星的南极极光的位置相吻合; C $_2$ H $_2$丰度极向极光椭圆是一个因素3高于相邻的静止,非极光极光。这是建立在以前的红外研究,发现增强的C $_2$ H $_2$丰富的北部极光椭圆。这表明木星的高层大气化学受到带电极光粒子流入的强烈影响,并表明有必要开发木星极地区域的离子中性光化学模型。
The precipitation of protons and electrons in Jupiter's auroral regions: a statistical comparison based on Juno/JEDI data
Aix-Marseille Université(艾克斯-马赛大学);CNES(法国国家空间研究中心);Institut Origines(起源研究所);LAM(宇宙学与天体物理学实验室);Laboratory of Atmospheric and Planetary Physics, STAR Institute, University of Liège(列日大学STAR研究所大气与行星物理实验室);Institut de Recherche en Astrophysique et Planétologie (IRAP)(天体物理学与行星学研究所在);CNES-CNRS-Université de Toulouse(图卢兹大学CNES-CNRS联合机构);Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-SUPAERO)(高等航空航天学院);NASA Langley Research Center(美国国家航空航天局兰利研究中心);Johns Hopkins University Applied Physics Laboratory(约翰斯·霍普金斯大学应用物理实验室);Northumbria University(诺森比亚大学);Weihai Institute for Interdisciplinary Research, Shandong University(山东大学威海跨学科研究院)
Energy distributions of precipitating electrons in Jupiter's auroral regions from combined Juno/JADE and Juno/JEDI measurements
Aix-Marseille Université, CNRS, CNES, Institut Origines, LAM(艾克斯-马赛大学,法国国家科学研究中心,法国国家空间研究中心,起源研究所,天体物理学与行星学实验室);Laboratory of Planetary and Atmospheric Physics, STAR Institute, University of Liège(列日大学,STAR研究所,行星与大气物理实验室);Université de Toulouse, CNRS, CNES, Institut de Recherche en Astrophysique et Planétologie(图卢兹大学,法国国家科学研究中心,法国国家空间研究中心,天体物理学与行星学研究所以);Institut Supérieur de l’Aéronautique et de l’Espace (ISAE SUPAERO), Université de Toulouse(图卢兹大学,航空航天高级学院);Weihai Institute for Interdisciplinary Research, Shandong University(山东大学,威海交叉科学研究院);Johns Hopkins University Applied Physics Laboratory(约翰斯·霍普金斯大学应用物理实验室);Space Science and Engineering Division, Southwest Research Institute(西南研究院,空间科学与工程部)
Revealing the Spatial Distribution of Dust and Plasma Solitary Waves in Jupiter's Innermost Magnetosphere Using Juno Waves Observations
UCLA Department of Earth, Planetary, and Space Sciences(加州大学洛杉矶分校地球、行星与空间科学系);UCLA SPACE Institute(加州大学洛杉矶分校SPACE研究所);University of Iowa, Department of Physics and Astronomy(爱荷华大学物理与天文学系);Princeton University, Department of Astrophysical Sciences(普林斯顿大学天体物理学系);Jet Propulsion Laboratory(喷气推进实验室);Southwest Research Institute(西南研究院)
Extreme, transient bursts of energy in the auroral ionosphere. II. A magnetotail dipolarization event
University of Saskatchewan(萨斯喀彻温大学);University of Alberta(阿尔伯塔大学);University of Oslo(奥斯陆大学);Korea Astronomy and Space Science Institute(韩国天文学与空间科学研究院);Korea University of Science and Technology(韩国科学技术院);University of Western Ontario(韦仕敦大学);Leibniz Institute of Atmospheric Physics(莱布尼茨大气物理研究所)
The European Space Agency Centre for Earth Observation(欧洲空间局地球观测中心);University of Saskatchewan(萨斯喀彻温大学);University of New Brunswick(新不伦瑞克大学);Istituto Nazionale di Geofisica e Vulcanologia(意大利国家地球物理与火山学研究所);Department of Physics and Astronomy, University of Western Ontario(韦仕敦大学物理与天文学系);Leibniz Institute of Atmospheric Physics(莱布尼茨大气物理学研究所);University of California, Los Angeles(加州大学洛杉矶分校);University of Tokyo(东京大学);Institute for Space-Earth Environmental Research, Nagoya University(名古屋大学宇宙地球环境研究所)