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Wide-field observations in the SDSS Stripe 82 with the European VLBI Network

Published online by Cambridge University Press:  25 July 2014

H.-M. Cao ,
L. I. Gurvits ,
J. Yang ,
X.-Y. Hong ,
S. Frey ,
Z. Paragi ,
A. T. Deller  and
Ž. Ivezić
H.-M. Cao
Affiliation:
Shanghai Astronomical Observatory, Chinese Academy of Sciences, 200030 Shanghai, China, email: hmcao@shao.ac.cn University of Chinese Academy of Sciences, 100049 Beijing, China Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 210008 Nanjing, China
L. I. Gurvits
Affiliation:
Joint Institute for VLBI in Europe, Postbus 2, 7990 AA Dwingeloo, The Netherlands Department of Astrodynamics and Space Missions, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands
J. Yang
Affiliation:
Joint Institute for VLBI in Europe, Postbus 2, 7990 AA Dwingeloo, The Netherlands
X.-Y. Hong
Affiliation:
Shanghai Astronomical Observatory, Chinese Academy of Sciences, 200030 Shanghai, China, email: hmcao@shao.ac.cn Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 210008 Nanjing, China
S. Frey
Affiliation:
FÖMI Satellite Geodetic Observatory, PO Box 585, H-1592 Budapest, Hungary
Z. Paragi
Affiliation:
Joint Institute for VLBI in Europe, Postbus 2, 7990 AA Dwingeloo, The Netherlands
A. T. Deller
Affiliation:
ASTRON, The Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA Dwingeloo, The Netherlands
Ž. Ivezić
Affiliation:
Department of Astronomy, University of Washington, Seattle, Washington 98195, USA
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Abstract

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We observed an area of sky located within the SDSS Stripe 82 field at 1.6 GHz with the European VLBI Network (EVN). There are fifteen mJy/sub-mJy radio sources within the primary beam of a typical 30-m class EVN radio telescope. Our aim was to obtain information on compact radio structures of all VLBI-detectable sources within this primary beam area. The source of particular interest is the recently identified radio quasar J222843.54+011032.2 (J2228+0110) at z = 5.95. The data correlation was performed at the EVN software correlator at JIVE (SFXC). Three targets (J2228+0110, J222851.45+011203.4, J222941.76+011428.5) were detected, all three with position offsets not exceeding the 3σ accuracy of the original low-resolution radio surveys. The detection rate of 20% is consistent with other wide-field VLBI experiments carried out recently (e.g. Middelberg et al. 2013). The project presented here demonstrates the ability of EVN in multiple-phase-centre experiments and paves the way for future large-scale EVN surveys of compact structures in extragalactic radio sources using the multiple-phase-centre VLBI technique.

Keywords

Wide-field VLBIquasarsurvey
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 230 - 231
Copyright
Copyright © International Astronomical Union 2014 

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