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- W4289337225 abstract "We study the nature of the faint radio source population detected in the MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) Early Science data in the COSMOS field, focusing on the properties of the radio-loud active galactic nuclei (AGN). Using the extensive multi-wavelength data available in the field, we are able to classify 88 per cent of the 5223 radio sources in the field with host galaxy identifications as AGN (35 per cent) or star-forming galaxies (54 per cent). We select a sample of radio-loud AGN with redshifts out to $z sim 6$ and radio luminosities $10^{20} < textrm{L}_{1.4~textrm{GHz}} / textrm{W Hz}^{-1} < 10^{27}$ and classify them as high-excitation and low-excitation radio galaxies (HERGs and LERGs). The classification catalogue is released with this work. We find no significant difference in the host galaxy properties of the HERGs and LERGs in our sample. In contrast to previous work, we find that the HERGs and LERGs have very similar Eddington-scaled accretion rates; in particular we identify a population of very slowly accreting AGN that are formally classified as HERGs at these low radio luminosities, where separating into HERGs and LERGs possibly becomes redundant. We investigate how black hole mass affects jet power, and find that a black hole mass $gtrsim 10^{7.8}~textrm{M}_odot$ is required to power a jet with mechanical power greater than the radiative luminosity of the AGN ($L_textrm{mech}/L_textrm{bol} > 1$). We discuss that both a high black hole mass and black hole spin may be necessary to launch and sustain a dominant radio jet." @default.
- W4289337225 created "2022-08-02" @default.
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- W4289337225 date "2022-08-01" @default.
- W4289337225 modified "2023-10-15" @default.
- W4289337225 title "MIGHTEE: the nature of the radio-loud AGN population" @default.
- W4289337225 cites W1573578139 @default.
- W4289337225 cites W1779164413 @default.
- W4289337225 cites W1882938068 @default.
- W4289337225 cites W1944555713 @default.
- W4289337225 cites W1967876247 @default.
- W4289337225 cites W1977512387 @default.
- W4289337225 cites W1979898396 @default.
- W4289337225 cites W1990940601 @default.
- W4289337225 cites W1995667613 @default.
- W4289337225 cites W1999417864 @default.
- W4289337225 cites W1999647896 @default.
- W4289337225 cites W2003138017 @default.
- W4289337225 cites W2009743038 @default.
- W4289337225 cites W2016949266 @default.
- W4289337225 cites W2023347320 @default.
- W4289337225 cites W2038763297 @default.
- W4289337225 cites W2044669640 @default.
- W4289337225 cites W2053766382 @default.
- W4289337225 cites W2067509014 @default.
- W4289337225 cites W2081879654 @default.
- W4289337225 cites W2088761263 @default.
- W4289337225 cites W2089290597 @default.
- W4289337225 cites W2090818992 @default.
- W4289337225 cites W2105176052 @default.
- W4289337225 cites W2109112103 @default.
- W4289337225 cites W2110294314 @default.
- W4289337225 cites W2112945450 @default.
- W4289337225 cites W2117233176 @default.
- W4289337225 cites W2133513465 @default.
- W4289337225 cites W2135536375 @default.
- W4289337225 cites W2135625048 @default.
- W4289337225 cites W2136068721 @default.
- W4289337225 cites W2136831548 @default.
- W4289337225 cites W2139342667 @default.
- W4289337225 cites W2141596435 @default.
- W4289337225 cites W2143104479 @default.
- W4289337225 cites W2143120362 @default.
- W4289337225 cites W2150486424 @default.
- W4289337225 cites W2151796687 @default.
- W4289337225 cites W2152116251 @default.
- W4289337225 cites W2152345208 @default.
- W4289337225 cites W2163807792 @default.
- W4289337225 cites W2183902373 @default.
- W4289337225 cites W2223095747 @default.
- W4289337225 cites W2302124182 @default.
- W4289337225 cites W2316962387 @default.
- W4289337225 cites W2337086579 @default.
- W4289337225 cites W2340244038 @default.
- W4289337225 cites W2340905026 @default.
- W4289337225 cites W2402735547 @default.
- W4289337225 cites W2414697318 @default.
- W4289337225 cites W2472932264 @default.
- W4289337225 cites W2473708360 @default.
- W4289337225 cites W2530964153 @default.
- W4289337225 cites W2597867981 @default.
- W4289337225 cites W2600780313 @default.
- W4289337225 cites W2607235379 @default.
- W4289337225 cites W2612829221 @default.
- W4289337225 cites W2740236269 @default.
- W4289337225 cites W2751436098 @default.
- W4289337225 cites W2772443994 @default.
- W4289337225 cites W2772800714 @default.
- W4289337225 cites W2783842509 @default.
- W4289337225 cites W2786313671 @default.
- W4289337225 cites W2794833795 @default.
- W4289337225 cites W2810671264 @default.