VERA 22 GHz Fringe Search Survey
VERA 22 GHz Fringe Search Survey
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DOI：
10.1086/513146
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发表时间：
2006-09
期刊：
影响因子：
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通讯作者：
L. Petrov;T. Hirota;M. Honma;K. Shibata;T. Jike;H. Kobayashi
中科院分区：
文献类型：
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作者：
L. Petrov;T. Hirota;M. Honma;K. Shibata;T. Jike;H. Kobayashi
本文给出了用VERA射电干涉仪对22 GHz的明亮紧凑型射电源的探测结果。在一次扫描中观察2494个对象中的每个源，时间为2分钟。这项调查的目的是寻找在22 GHz处足够明亮的致密河外光源，以用作相位校准器。观测到的源有：(1)距银河面6°以内，或(2)距银心11°以内，或(3)距已知水脉泽2°以内。在观测到的源中，有549个被探测到，其中包括180个以前没有用甚长基线干涉技术观测到的河外天体。给出了被探测源的相关通量密度的估计。结果表明，当积分时间为120mJy时，探测200mJy源的概率为60%。
This paper presents results of a survey search for bright compact radio sources at 22 GHz with the VERA radio interferometer. Each source from a list of 2494 objects was observed in one scan for 2 minutes. The purpose of this survey was to find compact extragalactic sources bright enough at 22 GHz to be useful as phase calibrators. Observed sources were either (1) within 6° of the Galactic plane, or (2) within 11° of the Galactic center, or (3) within 2° of known water masers. Among the observed sources, 549 were detected, including 180 extragalactic objects that were not previously observed with the very long baseline interferometry technique. Estimates of the correlated flux densities of the detected sources are presented. It was found that the probability of detecting a 200 mJy source with 120 s of integration time is 60%.