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钱德拉X射线天文观测望远镜
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作者 管象钧 《现代科技译丛(哈尔滨)》 2000年第1期17-18,共2页
关键词 天文观测望远镜 钱德拉X射线望远镜 性能 特点
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如何进行火星观测?
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作者 马春艳 《图形科普》 2003年第7期12-17,共6页
中国目前还没有向火星发射探测器,仍停留在借助高端天文望远镜观测的水平上。但据《星光快讯》的主办者齐锐讲,目前观测也只是针对火星某一局部区域的探测,如美国宇航局是向火星的“古谢夫环形山”投射“勇气号”的,它只能对此区域... 中国目前还没有向火星发射探测器,仍停留在借助高端天文望远镜观测的水平上。但据《星光快讯》的主办者齐锐讲,目前观测也只是针对火星某一局部区域的探测,如美国宇航局是向火星的“古谢夫环形山”投射“勇气号”的,它只能对此区域附近的环境进行仔细的探测。而在地球表面借助天文望远镜进行观测,能对火星的宏观大环境有个总体把握,知道星球的季节变化,极冠变化和地貌整体变化等信息。 展开更多
关键词 火星观测 中国 高端天文望远镜观测 季节变化 极冠变化 地貌整体变化 火星探测器
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Is the possible fine-structure constant drift also a test of a time-dependent Planck constant?
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作者 ZTAS A. M. SMITH M. L. 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2011年第12期2191-2195,共5页
The recent publication of spatial and distance variation of the fine-structure constant, α, derived from astronomical data of quasar emissions (QE) is exciting. The decreasing value of α over time, derived from data... The recent publication of spatial and distance variation of the fine-structure constant, α, derived from astronomical data of quasar emissions (QE) is exciting. The decreasing value of α over time, derived from data obtained from the Very Large Telescope (VLT) in Chile, encourages the search for other possible running constants. We surmise that emissions from distant supernovae, type Ia (SNe Ia), which are more blue than predictions are best explained by a decreasing Planck constant with increasing lookback time. We present some results from our theoretical work and comparison to the astronomical observations and suggest that both α and h might be running constants. More data are required to answer several questions about the origin of the "drifting" α and the possible time dependence of h. Astronomical tools such as SNe and QE may be the best means to secure the exacting data needed to confirm or deny these hypotheses. 展开更多
关键词 alpha QUASARS distance measurement SUPERNOVAE CMB
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