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Paper: High-z Radio Starbursts Host Obscured X-ray AGN
Volume: 380, At the Edge of the Universe: Latest Results from the Deepest Astronomical Surveys
Page: 279
Authors: Richards, A.M.S.; Beswick, R.; Garrington, S.T.; Muxlow, T.W.B.; Thrall, H.; Garrett, M.A.; Kettenis, M.; van Langevelde, H.J.; Gonzalez-Solarez, E.; Walton, N.A.; Allen, M.G.
Abstract: We use Virtual Observatory methods to investigate the association between radio and X-ray emission at high redshifts. Fifty-five of the 92 HDF(N) sources resolved by combining MERLIN+VLA data were detected by Chandra, of which 18 are hard enough and bright enough to be obscured AGN. The high-z population of μJy radio sources is dominated by starbursts an order of magnitude more active and more extended than any found at z < 1 and at least a quarter of these simultaneously host highly X-ray-luminous obscured AGN.
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