INVISIBLE ACTIVE GALACTIC NUCLEI. II. RADIO MORPHOLOGIES AND FIVE NEW H i 21 cm ABSORPTION LINE DETECTORS
نویسندگان
چکیده
منابع مشابه
H I 21 - cm absorption and unified schemes of active galactic nuclei
In a recent study of z > ∼ 0.1 active galactic nuclei (AGN), we found that 21-cm absorption has never been detected in objects in which the ultra-violet luminosity exceeds LUV ∼ 10 W Hz. In this paper, we further explore the implications that this has for the currently popular consensus that it is the orientation of the circumnuclear obscuring torus, invoked by unified schemes of AGN, which det...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2016
ISSN: 1538-3881
DOI: 10.3847/0004-6256/151/3/74