Very long baseline interferometry detection of an Infrared-Faint Radio Source
Very long baseline interferometry detection of an Infrared-Faint Radio Source
复制标题
微弱红外射电源的超长基线干涉测量检测
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Philip N. Appleton
中科院分区：
文献类型：
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作者：
R. Norris;S. Tingay;C. Phillips;E. Middelberg;A. Deller;Philip N. Appleton
微弱红外射电源代表了一类新的、意想不到的物体，它在无线电波长下明亮，但在红外波长下异常微弱。如果像大多数 mJy 射电源一样，它们是本地宇宙中传统的活跃星系或恒星形成星系，我们预计它们可以在红外波长下被探测到，因此斯皮策太空望远镜没有探测到它们是令人惊讶的。在这里，我们报告了使用超长基线干涉测量法对这些源之一的检测，从中我们得出结论，这些源是由活跃的星系核驱动的。我们认为这些源要么是高红移的正常射电响类星体，要么是异常模糊的射电星系。
Infrared-Faint Radio Sources represent a new and unexpected class of object which is bright at radio wavelengths but unusually faint at infrared wavelengths. If, like most mJy radio sources, they were either conventional active or star-forming galaxies in the local Universe, we would expect them to be detectable at infrared wavelengths, and so their non-detection by the Spitzer Space Telescope is surprising. Here, we report the detection of one of these sources using very long baseline interferometry, from which we conclude that the sources are driven by active galactic nuclei. We suggest that these sources are either normal radio-loud quasars at high redshift or abnormally obscured radio galaxies.