CMB图中点源检测的匹配多频方法
A multifrequency method based on the Matched Multifilter for the detection of point sources in CMB maps
摘要：
在这项工作中，我们处理的问题，同时多频探测河外点源的宇宙微波背景的地图。我们应用线性滤波技术，使用空间信息和互功率谱。为了做到这一点，我们模拟现实和非现实的天空在两个频率的普朗克：44和100 GHz的平坦补丁。我们滤波检测和估计的点源，并比较这种技术与MonteCarlo匹配滤波的完整性，可靠性，流量和光谱指数的精度。多频方法在两个频率和所有研究的情况下都优于匹配滤波器。
英文摘要：
In this work we deal with the problem of simultaneous multifrequency detection of extragalactic point sources in maps of the Cosmic Microwave Background. We apply a linear filtering technique that uses spatial information and the cross-power spectrum. To make this, we simulate realistic and non-realistic flat patches of the sky at two frequencies of Planck: 44 and 100 GHz. We filter to detect and estimate the point sources and compare this technique with the monofrequency matched filter in terms of completeness, reliability, flux and spectral index accuracy. The multifrequency method outperforms the matched filter at the two frequencies and in all the studied cases in the work.
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。
