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    The evolution of the low-frequency radio AGN population to z 1.5 in the ELAIS N1 field

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    Date
    2021
    Author
    Ocran, E. F.
    Taylor, A. R.
    Vaccari, M.
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    Abstract
    We study the cosmic evolution of radio sources out to z ≃ 1.5 using a GMRT 610 MHz survey covering ∼1.86 deg2 of the ELAIS N1 field with a minimum/median rms noise 7.1/19.5 μJy beam−1 and an angular resolution of 6 arcsec. We classify sources as star forming galaxies (SFGs), radio-quiet (RQ) and radio-loud (RL) Active Galactic Nuclei (AGNs) using a combination of multiwavelength diagnostics and find evidence in support of the radio emission in SFGs and RQ AGN arising from star formation, rather than AGN-related processes. At high luminosities, however, both SFGs and RQ AGN display a radio excess when comparing radio and infrared star formation rates.
    URI
    http://hdl.handle.net/10566/5847
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