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astronomical function and date of the Taosi observatory

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Science China(Physics,Mechanics & Astronomy) 2009年第1期52卷 151-158页

作者： WU JiaBi1, CHEN MeiDong2.& liu CiYuan3 1 national {2. observatories, chinese academy of sciences, beijing 100012, China 2.Institute for the History of Natural Science, chinese academy of sciences, beijing 100010, China 3 national Time Service Center, chinese academy of sciences, Xi’an 710600, China 1. national astronomical {2. Chinese Academy of Sciences Beijing 100012 China 2. Institute for the History of Natural Science Chinese Academy of Sciences Beijing 100010 China 3. national Time Service Center Chinese Academy of Sciences Xi’an 710600 China

The Taosi site in Xiangfen County,Shanxi Province,may be the capital of the King yao. Archeologists recently discovered a large semi-circular stamped-earth platform, II FJT1,which has a clear and definite pounded-earth central core together with a curved wall perforated by twelve gaps. The platform is said to be an ancient observatory used to determine the seasons by watching the sunrise. Each feature of II FJT1 was precisely measured and the data are reproduced in this paper. An astronomical analysis of slots E2.and E12.was carried out using the azimuths of the slots' centerlines and the vertical angle of the mountain ridge opposite, above which the sun rises. The results show that at present the sun is close to the two slots but does not exactly enter them at summer and winter solstice sunrise. Using 14C analysis archeologists dated the site to about 2.00 BC. Because of the secular change in the obliquity of the ecliptic,at that date on the summer solstice the half-risen sun would have appeared inside slot E12.just to the right of the centerline,and on the winter solstice the sun would have been exactly on the centerline of slot E2. This result provides compelling proof that II FJT1 is an ancient observatory.

关键词： astro-archeology astro-chronology Taosi culture ancient observatory time service

IRAS 10173+082.的翘曲拱核环中的OH超脉泽

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天文学报 2004年第2期45卷 115-119页

作者：俞志尧中国科学院上海天文台

对IRAS 10173+082.的拱核环中的OH超脉泽进行MERLIN§高分辨观测,得到了拱核环为翘曲的证据,同时得到了10个速度通道中OH超脉泽的等强度轮廓线向东西方向延伸的角尺寸与其相应速度通道中峰束流量密度成正相关关系.

关键词：黑洞物理星系拱核环 OH超脉泽相关关系

Relative position determination of a lunar rover using high-accuracy multi-frequency same-beam VLBI

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Science China(Physics,Mechanics & Astronomy) 2010年第3期53卷 571-578页

作者： liu QingHui1, CHEN Ming1, XIONG WeiMing2. QIAN ZhiHan1, LI JinLing1, HAO WangHong1,4, WANG GuangLi1, ZHENG WeiMin1, GUAN Di3, ZHU RenJie1, WANG WeiHua1, ZHANG XiuZhong1, JIANG DongRong1, SHU FengChun1, PING JinSong1 & HONG XiaoYu11 shanghai {2. Observatory, chinese academy of sciences, shanghai 2.0030, China 2.Center for Space Science and Applied Research, chinese academy of sciences, beijing 100190, China 3 Lunar Explorer Engineering General Department, chinese academy of sciences, beijing 100012, China 4 beijing Institute of Tracking and Telecommunications Technology, beijing 100094, China 1. shanghai astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China2. Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100190 China4. Beijing Institute of Tracking and Telecommunications Technology Beijing 100094 China3. Lunar Explorer Engineering General Department Chinese Academy of Sciences Beijing 100012 China

Multi-frequency same-beam VLBI means that two explorers with a small separation angle are simultaneously observed with the main beam of receiving antennas. In the same-beam VLBI, the differential phase delay between two explorers and two receiving telescopes can be obtained with a small error of several picoseconds. The differential phase delay, as the observable of the same-beam VLBI, gives the separation angular information of the two explorers in the celestial sphere. The two-dimensional relative position on the plane-of-sky can thus be precisely determined with an error of less than 1 m for a distance of 3.8×105 km far away from the earth, by using the differential phase delay obtained with the four chinese VLBI stations. The relative position of a lunar rover on the lunar surface can be determined with an error of 10 m by using the differential phase delay data and the range data for the lander when the lunar topography near the rover and the lander can be determined with an error of 10 m.

关键词： same-beam VLBI differential phase delay relative position determination lunar rover

Primary scientific results of Chang'E-1 lunar mission

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Science China Earth sciences 2010年第11期53卷 1565-1581页

作者： OUYANG ZiYuan1,2. LI ChunLai1, ZOU YongLiao1, ZHANG HongBo1, Lü Chang1, liu JianZhong1, liu JianJun1, ZUO Wei1, SU Yan1, WEN WeiBin1, BIAN Wei1, ZHAO {2.Chang3, WANG JianYu4, YANG JianFeng3, CHANG Jin5, WANG HuanYu6, ZHANG XiaoHui7, WANG ShiJin7, WANG Min1, REN Xin1, MU LingLi1, KONG DeQing1, WANG XiaoQian1, WANG Fang1, GENG Liang1, ZHANG ZhouBin1, ZHENG Lei1, ZHU XinYing1, ZHENG YongChun1, LI JunDuo1, ZOU XiaoDuan1, XU Chun1, SHI ShuoBiao1, GAO YiFei1 & GAO GuanNan1 1 national astronomical observatories, chinese academy of sciences, beijing 100012, China 2.Institute of Geochemistry, chinese academy of sciences, Guiyang 550002. China 3 Xi’an Institute of Optics and Precision Mechanics, chinese academy of sciences, Xi’an 710119, China 4 shanghai Institute of Technical Physics, chinese academy of sciences, shanghai 2.0083, China 5 Purple Mountain Observatory, chinese academy of sciences, Nanjing 2.0008, China 6 Institute of High Energy Physics, chinese academy of sciences, beijing 100049, China 7 Center for Space Science and Applied Research, chinese academy of sciences, beijing 100190, China 1. national astronomical {2. Chinese Academy of Sciences Beijing 100012 China2. Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China3. Xi’an Institute of Optics and Precision Mechanics Chinese Academy of Sciences Xi’an 710119 China4. Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China5. Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China6. Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China7. Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100190 China

The strategic plan for the development of the unmanned chinese Lunar Exploration Program is characterized by three distinct stages: "orbiting around", "landing on" and "returning from" the Moon. The first chinese lunar probe, Chang'E-1, which was successfully launched on October 2.th, 2.07 at Xichang Satellite Launch Center, and guided to crash on the Moon on March 1st, 2.09, at 52.36°E, 1.50°S, in the north of Mare Fecunditatis, is the first step towards the "orbiting around" stage. The Chang'E-1 mission lasted 495 days, exceeding the expected life-span by about four months. A total of 1.37 TB raw data was received from Chang'E-1. It was then processed into 4 TB scientific data products at various levels. Many scientific results have been obtained by analyzing these data, including especially the "global lunar image from the first chinese lunar explora- tion mission". All scientific goals of Chang'E-1 have been achieved. It provides much useful materials for further advances of lunar sciences and planetary chemistry. Meanwhile, these results will serve as a firm basis for future chinese lunar missions.

关键词： lunar orbiter Chang’E-1 scientific data results

Laser altimetry data of Chang'E-1 and the global lunar DEM model

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Science China Earth sciences 2010年第11期53卷 1582-1593页

作者： LI ChunLai1, REN Xin1, liu JianJun1, ZOU XiaoDuan1, MU LingLi1, WANG JianYu2. SHU Rong2. ZOU YongLiao1, ZHANG HongBo1, Lü Chang1, liu JianZhong1, ZUO Wei1, SU Yan1, WEN WeiBin1, BIAN Wei1, WANG Min1, XU Chun1, KONG DeQing1, WANG XiaoQian1, WANG Fang1, GENG Liang1, ZHANG ZhouBin1, ZHENG Lei1, ZHU XinYing1, LI JunDuo1 & OUYANG ZiYuan1 1 {2. astronomical observatories, chinese academy of sciences, beijing 100012, China 2.shanghai Institute of Technical Physics, chinese academy of sciences, shanghai 2.0083, China 1. national astronomical {2. Chinese Academy of Sciences Beijing 100012 China2. Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China

The Laser AltiMeter (LAM), as one of the main payloads of Chang'E-1 probe, is used to measure the topography of the lunar surface. It performed the first measurement at 02.2. on November 2.th, 2.07. Up to December 4th 2.08, the total number of measurements was approximately 9.12.million, covering the whole surface of the Moon. Using the LAM data, we constructed a global lunar Digtal Elevation Model (DEM) with 3 km spatial resolution. The model shows pronounced morphological characteristics, legible and vivid details of the lunar surface. The plane positioning accuracy of the DEM is 445 m (1σ), and the vertical accuracy is 60 m (1σ). From this DEM model, we measured the full range of the altitude difference on the lunar sur-face, which is about 19.807 km. The highest point is 10.62. km high, on a peak between crater Korolev and crater Dirichlet-Jackson at (158.656°W, 5.441°N) and the lowest point is -9.178 km in height, inside crater Antoniadi (172.413°W, 70.368°S) in the South Pole-Aitken Basin. By comparison, the DEM model of Chang'E-1 is better than the USA ULCN2.05 in accuracy and resolution and is probably identical to the DEM of Japan SELENE, but the DEM of Chang'E-1 reveals a new lowest point, clearly lower than that of SELENE.

关键词： Chang’E-1 laser altimetry lunar DEM topographic tops of the Moon

基于ITRF97的上海和鹿岛VLBI站地壳垂直形变的VLBI测定

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天文学报 2002年第2期43卷 205-211页

作者：杨志根朱文耀 SHUM C.K 舒逢春中国科学院上海天文台中国科学院国家天文台北京 100012 Ohio State University

利用美国宇航局(NASA)在1999年的VLBI全球解(glb112.)中关于上海VLBI站与国际上13个VLBI站的基线长变化率高精度测定结果,以及日本鹿岛Kashima和Kashima 34两VLBI站分别与国际VLBI站间的相应结果,基于最近的国际地球参考架ITRF97,估计... 详细信息

利用美国宇航局(NASA)在1999年的VLBI全球解(glb112.)中关于上海VLBI站与国际上13个VLBI站的基线长变化率高精度测定结果,以及日本鹿岛Kashima和Kashima 34两VLBI站分别与国际VLBI站间的相应结果,基于最近的国际地球参考架ITRF97,估计得到了上海VLBI站和日本鹿岛两VLBI站相对于板块稳定区的地壳垂直形变率分别为-1.91±0.56 mm/yr、-3.72.0.74 mm/yr和-8.81±0.84mm/yr,表明上海VLBI站存在每年近2.米的下降,讨论并证实日本鹿岛两VLBI站的地壳垂直形变速率是不一致的;基于不同板块运动模型的欧拉旋转矢量,估计得到了上述3站的水平形变速率;还估计给出了太平洋板块中部的形变率结果.

关键词：天体测量学 VLBI基线测量地球参考架甚长基线干涉测量地壳垂直形变上海 VLBI站

Characteristics of plasma jet in laser driven magnetic reconnections

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Characteristics of plasma jet in laser driven magnetic recon...

有摄圆型限制性三体问题平动点稳定的充要条件及应用

第十五届全国等离子体科学技术会议

作者： Xun liu1,~,Yutong Li1,+,Jiayong Zhong2.Quanli Dong1,Shoujun Wang1,Lei Zhang1,Jianqiang Zhu3,Gang Zhao2.and Jie Zhang1,4,+ 1 beijing {2. Laboratory for Condensed Matter Physics,Institute of Physics,chinese academy of sciences,beijing 100190,China, 2.Key Laboratory of Optical Astronomy,{2. astronomical observatories,chinese academy of sciences,beijing 100012,China, 3 {2. Laboratory on High Power Lasers and Physics,shanghai,2.1800,China, 4 Key Laboratory for Laser Plasmas(Ministry of Education) and Department of Physics,shanghai Jiao Tong University,shanghai 2.02.0,China.

The jet driven by magnetic reconnection in laser-plasma interactions is investigated *** diagnostics in the optical and x-ray ranges provide detailed information about the jet *** plasma jets perpendicular to and alon... 详细信息

关键词： laboratory astrophysics jet magnetic reconnection laser-plasma

来源： cnki会议评论

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天文学报 2005年第1期46卷 37-45页

作者：舒斯会陆本魁陈务深刘福窑中国科学院紫金山天文台

给出了一个判断有摄圆型限制性三体问题平动点稳定性的充要条件.该条件只依赖于平动点变分方程的特征方程系数的一个简单关系,使用很方便.用所得到的条件, 讨论了任意外力摄动对经典圆型限制性三体问题三角平动点稳定性的影响和惯性阻... 详细信息

给出了一个判断有摄圆型限制性三体问题平动点稳定性的充要条件.该条件只依赖于平动点变分方程的特征方程系数的一个简单关系,使用很方便.用所得到的条件, 讨论了任意外力摄动对经典圆型限制性三体问题三角平动点稳定性的影响和惯性阻力摄动对Robe圆型限制性三体问题主要平动点的稳定性的影响.

关键词：动点充要条件平动变分方程摄动特征方程外力限制性稳定性系数

平动点线性稳定条件及阻力对限制性三体问题三角平动点线性稳定性的影响

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天文学报 2004年第3期45卷 301-309页

作者：舒斯会陆本魁刘福窑陈务深中国科学院紫金山天文台

给出了受摄限制性三体问题平动点线性稳定性的一些判断条件,条件只与相应的平动点切映像的特征方程系数有关,使用方便.用这些判断条件,讨论了一些阻力对经典限制性三体问题三角平动点线性稳定性的影响,改进了Murray等的一些结果.

关键词：天体力学限制性三体问题平动点稳定性阻力