The radio-loud fraction of quasars at z > 6

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Keller, Pascal M. [1 ,2 ]
Thyagarajan, Nithyanandan [2 ]
Kumar, Ajay [3 ]
Kanekar, Nissim [3 ]
Bernardi, Gianni [4 ,5 ,6 ]
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[1] Cavendish Astrophysics, University of Cambridge, Cambridge,CB3 0HE, United Kingdom
[2] Commonwealth Scientific and Industrial Research Organisation (CSIRO), Space & Astronomy, P. O. Box 1130, Bentley,WA,6102, Australia
[3] National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune University, Ganeshkhind, Pune,411007, India
[4] INAF-Istituto di Radioastronomia, via Gobetti 101, Bologna,I-40129, Italy
[5] Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown,6140, South Africa
[6] South African Radio Astronomy Observatory, Black River Park, 2 Fir Street, Observatory, Cape Town,7925, South Africa
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