Invasion of Alien Planet
夏志宏 教授
Host： 段金桥教授
Date： 2023年7月12日 (周三)
Time： 14:00-15:00 P.M.
Venue： Tencent Meeting ID：255-688-252
国际创新创业社区A5栋19楼01会议室
Abstract：
This talk is on dynamics of solar system, we show strong evidences that an alien planet once invaded our solar system. There is a long unsolved mystery concerning a group of asteroids called Jupiter Trojans. Mathematically, there are two symmetric relative equilibrium points for the Sun-Jupiter system, L4 and L5. However, there is a large difference in numbers of observed asteroids: L4 has 60% more than L5. We theorized that this asymmetry is caused by an invasion of alien planet, we computed the necessary parameters for the invading alien planet to cause such an asymmetry. It is amazing and surprising that these exact parameters perfectly solved another mystery in solar system. The Hildas are a group of a few thousands of asteroids locked in a 3-2 resonance with Jupiter. The very strange thing is that none of the Hildas has small eccentricity. The invading alien planet explains this and perfectly matches with the observations.
This is a joint work with Jian Li, Nanjing University.
Biography：
夏志宏，美国西北大学Pancoe讲席教授、数学家。
夏志宏教授毕业于南京大学天文系，获美国西北大学数学博士学位。先后任教于美国哈佛大学，佐治亚理工大学和西北大学。2001年成为西北大学Pancoe讲席教授。
夏志宏主要研究领域为动力系统、天体力学。主要成果包括解决百年数学难题Painleve猜测，天体运动的混沌性，Hamilton系统的通有性质和遍历理论中关于拓扑熵的系列问题。
夏志宏曾获得多项国际重大学术奖励，其中包括美国总统青年研究者奖(PYI)，Sloan Research Fellowship，首届Blumenthal纯数学进步奖（全球最佳数学博士论文，每四年一个），Monroe Martin应用数学奖。
