Radio Sources of Random Sky Region
Radio Sources of Random Sky Region
复制标题
随机天空区域的射电源
DOI：
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发表时间：
2019
影响因子：
1.2
通讯作者：
O. Verkhodanov
中科院分区：
文献类型：
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作者：
A. A. Zaporozhetz;O. Verkhodanov
论文介绍了高银河纬度177▭°天空区域射电天文观测的统计数据分析。我们将该区域划分为面积相等的四个扇区，并分析了每个扇区中观测到的射电源和宇宙微波背景的特性。 177▭°范围内的物理参数（通量密度、射电谱类型、射电源光谱指数）分布以及宇宙微波背景特性符合宇宙学原理，而不同地区的射电源数量及其形态类型存在显着差异。这表明，在分析宇宙微波背景时，研究给定大小的天空区域可以在高多极（对应于区域的大小）下产生统计上正确的图像，而整个天空的物体计算及其在源总数上的演化形态特征的概括并不明显。我们检测到宇宙微波背景图上射电源方向的响应分布在所有四个扇区重复出现 2σ 水平的正向变化。根据多频普朗克图的分析，编制了包含120个新的具有Sunyaev-Zeldovich效应的星系团候选星表的目录，其中46个可能是遥远的（z>0.7）。
The paper presents the statistical data analysis of radio astronomic surveys in the sky region of a size of 177▭°at high galactic latitudes. We divided the region into four sectors equal in area and analyzed the observed properties of radio sources and the cosmic microwave background in each sector. The distribution of physical parameters (flux density, radio spectrum type, spectral index of radio sources) as well as the properties of the cosmic microwave background within the region of a size of 177▭° are shown to correspond to the cosmological principle, while the number of radio sources and their morphological types significantly differ in various areas. This points that studying sky regions of a given size, when analyzing the cosmic microwave background, can yield a statistically correct picture at high multipoles (corresponding to the size of a region), while generalization of the object calculations over the whole sky and their evolutionary morphological characteristics over the total population of sources is not obvious. We detected a positive shift in the response distribution in the direction to the radio sources on the cosmic microwave background map at the 2σ level repeated in all four sectors. According to the analysis of the multi-frequency Planck maps, a catalog has been compiled containing 120 new for galaxy cluster candidates with the Sunyaev—Zeldovich effect, 46 of which may be distant (z > 0.7).