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arXiv 0909.3666astro-ph.CO
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ASKAP-EMU:克服宽深连续体测量的挑战

ASKAP-EMU: Overcoming the challenges of wide deep continuum surveys

Ray P. Norris, the EMU team

摘要:

下一代连续统调查将受到动态范围和混乱的严重制约。例如,ASKAP-EMU(宇宙进化图)项目将在20厘米处绘制75%的天空,灵敏度为10微焦耳-比NVSS深45倍,并且可能会受到混淆,交叉识别和动态范围问题的挑战。在这里,我们描述了调查,问题,以及可以采取的步骤来克服它们。我们还探讨了如何使用多波长数据穿透远远超出了经典的混乱的限制,使用多波长数据,和一个创新的推广方法,交叉识别。

英文摘要:

Next-generation continuum surveys will be strongly constrained by dynamic range and confusion. For example, the ASKAP-EMU (Evolutionary Map of the Universe) project will map 75% of the sky at 20cm to a sensitivity of 10 microJy - some 45 times deeper than NVSS, and is likely to be challenged by issues of confusion, cross-identification, and dynamic range. Here we describe the survey, the issues, and the steps that can be taken to overcome them. We also explore ways of using multiwavelength data to penetrate well beyond the classical confusion limit, using multiwavelength data, and an innovative outreach approach to cross-identification.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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