High-z radio starbursts host X-ray AGN

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 popul...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2006-08, Vol.2 (S235), p.422-422
Main Authors: Richards, Anita 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.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
Contributed Papers
Radio astronomy
Red shift
Star & galaxy formation
X-rays
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Summary: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.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921306010490