The Hot and Energetic Universe: The Wide Field Imager (WFI) for Athena+
作者： N. Meidinger , M. Furmetz , F. Aschauer , R. Andritschke , D. Barret
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摘要: The Wide Field Imager (WFI) is one of the two scientific instruments proposed for Athena+ X-ray observatory. It will provide imaging in 0.1-15 keV band over a wide field, simultaneously with spectrally and time-resolved photon counting. instrument designed to make optimal use grasp (collecting area times solid angle product) provided by optical design mirror system (Willingale et al. 2013), combining sensitive approx. 40' diameter field view (baseline; 50' goal) DEPFET detector pixel size properly sampling angular resolution 5 arc sec on-axis (half energy width).This synthesis makes WFI very powerful survey instrument, significantly surpassing currently existing capabilities (Nandra 2013; Aird 2013). In addition, unprecedented simultaneous high-time high count rate observation bright sources low pile-up efficiency. this paper, we summarize design, status technology development, baseline performance.
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harvard.edu参考文章(3)
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