Space Research Corporation, Annapolis, MD 21403, USA.
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
Science. 2017 May 26;356(6340):826-832. doi: 10.1126/science.aam5928.
The Juno spacecraft acquired direct observations of the jovian magnetosphere and auroral emissions from a vantage point above the poles. Juno's capture orbit spanned the jovian magnetosphere from bow shock to the planet, providing magnetic field, charged particle, and wave phenomena context for Juno's passage over the poles and traverse of Jupiter's hazardous inner radiation belts. Juno's energetic particle and plasma detectors measured electrons precipitating in the polar regions, exciting intense aurorae, observed simultaneously by the ultraviolet and infrared imaging spectrographs. Juno transited beneath the most intense parts of the radiation belts, passed about 4000 kilometers above the cloud tops at closest approach, well inside the jovian rings, and recorded the electrical signatures of high-velocity impacts with small particles as it traversed the equator.
朱诺号飞船从极地上方的有利位置直接观测木星磁层和极光发射。朱诺号的捕获轨道覆盖了木星磁层，从弓形激波到行星，为朱诺号经过极地和穿越木星危险的内辐射带提供了磁场、带电粒子和波现象背景。朱诺号的高能粒子和等离子体探测器测量了在极地地区沉降的电子，激发了强烈的极光，同时被紫外和红外成像光谱仪观测到。朱诺号在辐射带最强烈的部分下方穿过，在最接近时距离云层顶部约 4000 公里，正好在木星环内，并在穿越赤道时记录了与小粒子高速撞击的电信号。
