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arXiv 1503.00346astro-ph.GAastro-ph.CO
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基于K图的Planck LFI 70 GHz CMB图点源检测

On the detection of point sources in Planck LFI 70 GHz CMB maps based on cleaned K-map

H. G. Khachatryan, A. L. Kashin, E. Poghosian, G. Yegorian

摘要:

利用普朗克LFI 70 GHz数据,进一步探讨了宇宙微波背景(CMB)辐射天空图中点源探测技术。本文采用Tegmark等人提出的前景简化方法,以Kolmogorov参数为描述子,对普朗克卫星CMB温度资料进行了分析。大多数检测到的点与其他方法已经揭示的点源相吻合。然而,我们也发现了9个源候选人,仍然没有对应的已知。

英文摘要:

We use the Planck LFI 70GHz data to further probe point source detection technique in the sky maps of the cosmic microwave background (CMB) radiation. The method developed by Tegmark et al. for foreground reduced maps and the Kolmogorov parameter as the descriptor are adopted for the analysis of Planck satellite CMB temperature data. Most of the detected points coincide with point sources already revealed by other methods. However, we have also found 9 source candidates for which still no counterparts are known.

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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