修订的第三剑桥星表中未确认射电源的快速观测
Swift observations of unidentified radio sources in the revised Third Cambridge Catalogue
摘要：
我们对3CR分类表中的一组无关联射电源进行了研究，以增加它们的多频信息，并有可能获得鉴别。我们已经进行了一个观测活动与雨燕卫星观察与UVOT和XRT望远镜的视场内的3CR源的位置不确定性区域的21个明亮的NVSS源。此外，我们在最近的AllWISE源目录中搜索了与这些NVSS源位置相匹配的红外源。我们已经检测到显着的发射在软X射线波段的九个调查NVSS源。对于所有这些，在四个没有软X射线关联的情况下，我们关联了一个WISE红外对应物。这些红外候选人中有八个在文献中没有被提出。在剩下的五种情况下，我们的候选人在以前的研究中为相同的3CR源建议的几个光学候选人之一匹配。在UVOT过滤器中未在NVSS对象的位置处检测到源，从而确认了所有这些对象都被严重遮挡的情况。考虑到这一点，最好是在红外波段进行光谱分析，以确定我们最终确定的来源的性质。
英文摘要：
We have investigated a group of unassociated radio sources included in the 3CR cat- alogue to increase the multi-frequency information on them and possibly obtain an identification. We have carried out an observational campaign with the Swift satellite to observe with the UVOT and the XRT telescopes the field of view of 21 bright NVSS sources within the positional uncertainty region of the 3CR sources. Furthermore, we have searched in the recent AllWISE Source Catalogue for infrared sources matching the position of these NVSS sources. We have detected significant emission in the soft X-ray band for nine of the investigated NVSS sources. To all of them, and in four cases with no soft X-ray association, we have associated a WISE infrared counterpart. Eight of these infrared candidates have not been proposed earlier in the literature. In the five remaining cases our candidate matches one among a few optical candidates suggested for the same 3CR source in previous studies. No source has been detected in the UVOT filters at the position of the NVSS objects, confirming the scenario that all of them are heavily obscured. With this in mind, a spectroscopic campaign, preferably in the infrared band, will be necessary to establish the nature of the sources that we have finally identified.
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。
