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首页> 外文会议>Space Technology amp; Applications International Forum (STAIF-99) ptol January 31-February 4, 1999, Albuquerque Hyatt Hotel, NM >Implementing an All-sky x-ray camera on spece station
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Implementing an All-sky x-ray camera on spece station

机译：在空间站上部署全天候X射线摄影机

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A pinhole camera is an elegant but effective approach to an x-ray all-sky monitor. It is an ideal astrophysical instrument for the Space Station, because it does not require poiinting, is robust againxt contamination, and requires modest resources (120 kg, 50 Watts, 10 kpbs). Nonetheless, it would be more senitive than any previous all-sky x-ray monitory. By continuously monitoring the entire unocculted sky, this instrument would be sensitive to changes at all timescales. Besides monitoring the brightest few hundred x-ray sources, including about a dozen active galactic nuclei, this instrument would be uniquely sensitive to fast transients, unlike any scanning instrument. We wuld expect to detect several hundered events per year with timescales from a minute to a day, and better understand their correlation with magnetic activity on nearby stars. We would also expect to detect about 50 gamma-ray bursts per year and locat them to 1 square degree, independently verifying the BATSE sky distribution. We discuss the issues involved in flying this instrument o the Space StAtion. These include the management of image data from a continuously scanning 2-dimensional field, autonomous determination of aspect using x-ray image data, the detection and excusion of solar panel occultation from the data, the optimum integration of a very wide-field instrument onto an EXPRESS pallet, safety validation of already-built hardware, and thermal considerations for a very low-power instrument. We conclude that Space Station is an attractive platform to conduct wide-field x-ray astronomy.
机译：针孔相机是X射线全天候监视器的一种优雅而有效的方法。它是空间站的理想天体物理学仪器，因为它不需要点印，不易受到污染，并且需要适度的资源（120公斤，50瓦，10 kpbs）。但是，这将比任何以前的全天候X射线监控器更为敏感。通过连续监测整个隐秘的天空，该仪器将对所有时标的变化敏感。除了监视最亮的几百个X射线源（包括大约十二个活跃的银河核）之外，该仪器还将对快速瞬变具有独特的敏感性，这与任何扫描仪器不同。我们希望可以每年从一分钟到一天的时间尺度检测到几起令人沮丧的事件，并更好地了解它们与附近恒星的磁活动的相关性。我们还将期望每年检测大约50次伽马射线暴并将其定位到1平方度，从而独立地验证BATSE的天空分布。我们讨论了在空间站飞行该乐器所涉及的问题。这些包括对来自连续扫描二维场的图像数据进行管理，使用X射线图像数据自动确定宽高比，从数据中检测和排除太阳能电池板的遮挡，将超广角仪器最佳集成到EXPRESS托盘，已经制造的硬件的安全性验证以及超低功耗仪器的散热考虑。我们得出的结论是，空间站是进行广域X射线天文学的极具吸引力的平台。

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