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chinese Journal of Astronomy and Astrophysics 2003年第6期3卷 563-568页

作者： cui-lian zhu and jia-long wangnational astronomical observatories, chinese academy of sciences, beijing 100012 National astronomical observatories Chinese Academy of Sciences Beijing 100012

We present a verification of the short-term predictions of solar X-ray bursts for the maximum phase (2000–2001) of Solar Cycle 23, issued by two prediction centers. The results are that the rate of correct predictions is about equal for RWC-China and WWA; the rate of too high predictions is greater for RWC-China than for WWA, while the rate of too low predictions is smaller for RWC-China than for WWA.

关键词： sun: X-ray bursts sun: short-term prediction

“Small Equipment Strategy” in the Development of Astronomy

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chinese Journal of Astronomy and Astrophysics 2003年第1期3卷 1-11页

作者： Shou-Guan wangnational astronomical observatories, chinese academy of sciences, beijing 100012 shouguanwang@*** National astronomical observatories CAS NAOC Beijing 100012 China

Astronomy is an observational science. This paper points out that in the development of astronomy, the means of observation at every stage has as its main body the large equipment of the time, but equally important is the simultaneous development of small equipment as strategic complement. A number of historical examples are cited. The recently suggested 'Special Radio Telescope Dedicated to Pulsar Research' originates in the small equipment strategy, and a brief introduction to this instrument is included here.

关键词： instrumentation telescopes

Near-Infrared Imaging Observations of the Orion A-W Star Forming Region

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chinese Journal of Astronomy and Astrophysics 2002年第3期2卷 260-265页

作者： Jun-Jie wangnational astronomical observatories, chinese academy of sciences, beijing 100012chinese academy of sciences-Peking University Joint beijing Astrophysics Center, beijing100871 National astronomical observatories Chinese Academy of Sciences Beijing 100012 Chinese Academy of Sciences-Peking University Joint Beijing Astrophysics Center Beijing 100871

We carried out near-infrared imaging observations of the Ori A-W region using the Italian 1.5 m TIRGO infrared telescope at Gornergrat. A group of infrared objects is visible on the K band image, including an IRAS source (IRS 1). From its IRAS flux density the IRAS luminosity is derived to be 45L⊙, which shows that IRS 1 is a low-mass protostar. By superimposing the position of the VLA H2O maser on the K image, we can identify the less evolved object IRS 1 as the excitation source of the H2O maser, within a projected distance of 470AU. This would be evidence that the maser effect is associated with the youngest phase of stellar evolution. The first probable HH object candidate in the Ori A-W region is discovered from the H2S(1)1-0 observation. Comparing the position of the H2O maser with the direction of the molecular hydrogen emission in the region, we suggest that the observed H2O maser could be tracing the circumstellar disk of IRS 1.

关键词： Stars: formation - ISM: jets and outflows

A New Catalogue of Fine Structures Superimposed on Solar Microwave Bursts

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chinese Journal of Astronomy and Astrophysics 2004年第2期4卷 176-188页

作者： Qi-Jun Fu, Yi-Hua Yan, Yu-Ying Liu, Min Wang and Shu-Juan wangnational astronomical observatories, chinese academy of sciences, beijing 100012 fuqijun2002@*** National astronomical observatories Chinese Academy of Sciences Beijing 100012

The 2.6-3.8 GHz, 4.5-7.5 GHz, 5.2-7.6 GHz and 0.7-1.5 GHz componentspectrometers of Solar Broadband Radio Spectrometer (SBRS) started routine observations,respectively, in late August 1996, August 1999, August 1999, and June 2000. They just managed tocatch the coming 23rd solar active maximum. Consequently, a large amount of microwave burst datawith high temporal and high spectral resolution and high sensitivity were obtained. A variety offine structures (FS) superimposed on microwave bursts have been found. Some of them are known, suchas microwave type Ⅲ bursts, microwave spike emission, but these were observed with more detail;some are new. Reported for the first time here are microwave type U bursts with similar spectralmorphology to those in decimetric and metric wavelengths, and with outstanding characteristics suchas very short durations (tens to hundreds ms), narrow bandwidths, higher frequency drift rates andhigher degrees of polarization. Type N and type M bursts were also observed. Detailed zebra patternand fiber bursts at the high frequency were found. Drifting pulsation structure (DPS) phenomenaclosely associated with CME are considered to manifest the initial phase of the CME, andquasi-periodic pulsation with periods of tens ms have been recorded. Microwave 'patches', unlikethose reported previously, were observed with very short durations (about 300 ms), very high fluxdensities (up to 1000 sfu), very high polarization (about 100% RCP), extremely narrow bandwidths(about 5%), and very high spectral indexes. These cannot be interpreted with the gyrosynchrotronprocess. A superfine structure in the form of microwave FS (ZPS, type U), consisting of microwavemillisecond spike emission (MMS), was also found.

关键词： sun: flares sun: radio radiation instrumentation: spectro-graphs

Analysis of the Short-Term Prediction of Solar X-Ray Bursts for the Maximum Phase（2000-2001） of Solar Cycle23

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Analysis of the Short-Term Prediction of Solar X-Ray Bursts ...

Ghost Images in Schmidt CCD Photometry

第十届全国日地空间物理学术讨论会

作者： cui-lian zhu, jia-long Wang (National astronomical observatories, chinese academy of sciences,beijing 100012)

＜正＞ A verification of short-term predictions of solar X-ray bursts for the maximumphase（2000-2001） of Solar Cycle 23 issued by prediction centers are made in this *** show that the rates of the correct predictions issued by RWC-China and WWA are of thesame order of magnitude,and that the rate of false prediction of RWC-China is higher than that ofWWA,while RWC-China has a lower the of failure prediction than that WWA *** haveworked out the following analyses and discussions for the results:

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来源： cnki会议评论

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chinese Journal of Astronomy and Astrophysics 2002年第5期2卷 474-480页

作者： Bin Yang, Jin zhu and Yu-Ying Song1 National astronomical observatories, chinese academy of sciences, beijing 1000122 Department of Astronomy, beijing Normal University, beijing 1008753 beijing Planetarium, beijing 100044 National astronomical observatories CAS NAOC Beijing 100012 China Department of Astronomy Beijing Normal University Beijing 100875 beijing Planetarium Beijing 100044

The wide field of the Schmidt telescope implies a greater chance of the field containing bright objects, and the presence of a corrector lens produces a certain type of ghost images. We summarize and confirm the features of such ghost images in Schmidt CCD photometry. The ghost images could be star-like under special observational conditions. The zenith distance of the telescope, among other factors, is found to correlate with different patterns of the ghost images. Some relevant issues are discussed and possible applications of our results are suggested.

关键词： instrumentation: detector - techniques: photometric - stars:imaging

Three Super Active Regions in the Descending Phase of Solar Cycle 23

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chinese Journal of Astronomy and Astrophysics 2003年第6期3卷 491-494页

作者： Hong-Qi Zhang, Xing-Ming Bao, Yin Zhang, Ji-Hong Liu, Shu-Dong Bao, Yuan-Yong Deng, Wei Li, Jie Chen, Jin-Ping Dun, jiang-Tao Su, Juan Guo, Xiao-Fan Wang, Ke-liang Hu, Gang-Hua Lin and Dong-Guang wangnational astronomical observatories, chinese academy of sciences, beijing 100012 National astronomical observatories CAS NAOC Beijing 100012 China

We analyze the magnetic configurations of three super active regions, NOAA 10484, 10486 and 10488, observed by the Huairou Multi-Channel Solar Telescope (MCST) from 2003 October 18 to November 4. Many energetic phenomena, such as flares (including a X-28 flare) and coronal mass ejections (CMEs), occurred during this period. We think that strong shear and fast emergence of magnetic flux are the main causes of these events. The question is also of great interest why these dramatic eruptions occurred so close together in the descending phase of the solar cycle.

关键词： Sun: activity - Sun: flares - Sun: magnetic fields

Re-Discussion on Motion of Shanghai VLBI Station Relative to Eurasian Plate From VLBI

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天文研究与技术 1999年第S1期 134-138页

作者： Yang Zhigen, zhu Wenyao, Xiong Yongqing, Zhang Qiang (Shanghai astronomical Observatory, The chinese academy of sciences, Shanghai 200030, China) (National astronomical observatories, The chinese academy of sciences, beijing 100012, China)

By using the results of changing rate of the baseline lengths from Shanghai VLBI station to 13 international VLBI stations, respectively, the vertical and horizontal velocities of Shanghai VLBI station are re estimated by means of the Least Square Fit method based on the international VLBI station velocities of ITRF96, and the Euler vectors of Eurasian tectonic plate of Sillard et al (1998). The results are such the vertical velocity: -1 86±0 84 mm/yr, horizontal velocity and its local azimuth: 14 24±0 97 mm/yr, E -12° 49±2° 98 S. If the NNR NUVEL 1A model is used instead of the Euler vectors of Sillard et al., the corresponding results are such -1 86±0 84 mm/yr, 10 56±0 96 mm/yr, E -16° 07±4° 06 S. In addition, the corresponding results for the Urumqi VLBI station are also estimated.

关键词： Relative to Eurasian Plate From VLBI Re-Discussion on Motion of Shanghai VLBI Station

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 astronomical Observatory, chinese academy of sciences, Shanghai 200030, 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 Shanghai astronomical Observatory Chinese Academy of Sciences Center for Space Science and Applied Research Chinese Academy of Sciences

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

Ore-forming fluid and mineralization of Caijiaying and Dajing polymetallic ore deposits

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Science China Earth sciences 2004年第2期47卷 97-107页

作者： WANG Lijuan,WANG Jingbin, WANG Yuwang & zhu Heping1. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, chinese academy of sciences, beijing 100029, China 2. beijing Institute of Geology for Mineral Resources, beijing 100012, China Correspondence should be addressed to Wang Lijuan (email: wlj@***) Key Laboratory of Mineral Resources Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China beijing Institute of Geology for Mineral Resources Beijing China

Fluid inclusions from the Dajing and Caijiaying deposits have nearly the same homogenization temperature. Correlation between temperature and salinity shows that both Sn- and Cu-bearing fluids Sn and Cu were present in the Dajing deposit but only one kind of fluids continuously evolved in the Caijiaying deposit. Study on rare earth elements (REE) in ancient fluid from the inclusions indicates that the fluid of Sn mineralizing stage in Dajing was derived from remelting magma of the continental crust, and the fluid of Cu-Pb-Zn mineralizing stage in the Dajing deposit and the fluid of Cu-Pb-Zn mineralization in the Caijiaying deposit were derived from the mantle. It is concluded that the Cu-Pb-Zn mineralizations in the Dajing and Caijiaying deposits resulted from the identical tectono-thermal event of magma-fluids induced by Mesozoic tectonic transition and extension in the eastern part of North China Craton.

关键词： Caijiaying, Dajing, Mesozoic tectonic transition, ore-forming fluid, REE.