一厘米接收机阵列--在30 GHz上对CRATES源的原型观测
One Centimetre Receiver Array-prototype observations of the CRATES sources at 30 GHz
摘要：
了解2-200 GHz范围内的射电源的总体情况对于了解它们对宇宙微波背景功率谱测量的影响是很重要的。我们报告测量的605个无线电源的30 GHz的通量密度的无线电全天空有针对性的8 GHz的调查（CRATES），这已经与一厘米接收器阵列原型（OCRA-P）的托伦32米望远镜。WMAP和以前的OCRA调查也观察到的源的通量密度与这里报道的大致一致，但是一些源显示出内在的变化。我们发现一个很好的30 GHz和费米伽马射线通量密度为共同的来源之间的相关性。我们研究了所有观测到的源的无线电频谱，并报告了一些千兆赫兹峰值和倒置频谱源。这些测量结果将有助于与普朗克卫星低频仪器的测量结果进行比较，普朗克卫星将在本报告所述区域进行一些最敏感的观测。
英文摘要：
Knowledge of the population of radio sources in the range ~2-200 GHz is important for understanding their effects on measurements of the Cosmic Microwave Background power spectrum. We report measurements of the 30 GHz flux densities of 605 radio sources from the Combined Radio All-sky Targeted Eight-GHz Survey (CRATES), which have been made with the One Centimetre Receiver Array prototype (OCRA-p) on the Torun 32-m telescope. The flux densities of sources that were also observed by WMAP and previous OCRA surveys are in broad agreement with those reported here, however a number of sources display intrinsic variability. We find a good correlation between the 30 GHz and Fermi gamma-ray flux densities for common sources. We examine the radio spectra of all observed sources and report a number of Gigahertz-peaked and inverted spectrum sources. These measurements will be useful for comparison to those from the Low Frequency Instrument of the Planck satellite, which will make some of its most sensitive observations in the region covered here.
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