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What sparks the radio-loud phase of nearby quasars?
Abstract To better constrain the hypotheses proposed to explain why only a few quasars are radio loud (RL), we compare the characteristics of 1958 nearby (z ≤ 0.3) SDSS (Sloan Digital Sky Survey) quasars, covered by the FIRST (Faint Images of the Radio Sky at Twenty-centimeters) and NVSS (NRAO VLA S...
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Published in: | Monthly notices of the Royal Astronomical Society 2017-04, Vol.466 (1), p.921-944 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Request full text |
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Summary: | Abstract
To better constrain the hypotheses proposed to explain why only a few quasars are radio loud (RL), we compare the characteristics of 1958 nearby (z ≤ 0.3) SDSS (Sloan Digital Sky Survey) quasars, covered by the FIRST (Faint Images of the Radio Sky at Twenty-centimeters) and NVSS (NRAO VLA Sky Survey) radio surveys. Only 22 per cent are RL with log (L
1.4 GHz) ≥ 22.5 W Hz−1, the majority being compact (C), weak radio sources (WRS), with log (L
1.4 GHz) |
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ISSN: | 0035-8711 1365-2966 |
DOI: | 10.1093/mnras/stw3164 |