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The VSOP Survey: final aggregate results

Published online by Cambridge University Press:  01 August 2006

R. Dodson ,
S. Horiuchi ,
W. Scott ,
E. Fomalont ,
Z. Paragi ,
S. Frey ,
K. Wiik ,
H. Hirabayashi ,
P. Edwards  and
Y. Murata
...Show all authors
R. Dodson
Affiliation:
The Institute of Space and Astronautical Science, JAXA, 3-1-1 Yoshinodai, 229-8510, Japan
S. Horiuchi
Affiliation:
Centre for Astrophysics and Supercomputing, Swinburne University, Vic. 3122, Australia National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
W. Scott
Affiliation:
Physics and Astronomy Department, University of Calgary, Calgary, Canada
E. Fomalont
Affiliation:
National Radio Astronomy Obs., 520 Edgemont Road, Charlottesville, VA 22903, USA
Z. Paragi
Affiliation:
Joint Institute for VLBI in Europe, P.O. Box 2, 7990 AA, Dwingeloo, Netherlands
S. Frey
Affiliation:
FÖMI Satellite Geodetic Observatory, P.O. Box 546, H-1373, Budapest, Hungary
K. Wiik
Affiliation:
The Institute of Space and Astronautical Science, JAXA, 3-1-1 Yoshinodai, 229-8510, Japan Tuorla Observatory, Väisäläntie 20, FIN-21500 Piikkiö, Finland
H. Hirabayashi
Affiliation:
The Institute of Space and Astronautical Science, JAXA, 3-1-1 Yoshinodai, 229-8510, Japan
P. Edwards
Affiliation:
The Institute of Space and Astronautical Science, JAXA, 3-1-1 Yoshinodai, 229-8510, Japan Australia Telescope National Facility, CSIRO, P. O. Box 76, Epping NSW 2122, Australia
Y. Murata
Affiliation:
The Institute of Space and Astronautical Science, JAXA, 3-1-1 Yoshinodai, 229-8510, Japan
G Moellenbrock
Affiliation:
National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM 87801, USA
L. Gurvits
Affiliation:
Joint Institute for VLBI in Europe, P.O. Box 2, 7990 AA, Dwingeloo, Netherlands
Z. Shen
Affiliation:
Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Lu, China
J. Lovell
Affiliation:
Australia Telescope National Facility, CSIRO, P. O. Box 76, Epping NSW 2122, Australia
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Abstract

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In February 1997 the Japanese radio astronomy satellite HALCA was launched to provide the space-borne element for the VSOP mission. HALCA provided linear baselines three-times greater than that of ground arrays, thus providing higher resolution and higher AGN brightness temperature measurements and limits. Twenty-five percent of the scientific time of the mission was devoted to the “VSOP survey” of bright, compact, extra-galactic radio sources at 5 GHz. A complete list of 294 survey targets were selected from pre-launch surveys, 91% of which were observed during the satellite's lifetime.

The major goals of the VSOP Survey are statistical in nature: to determine the brightness temperature and approximate structure, to provide a source list for use with future space VLBI missions, and to compare radio properties with other data throughout the electro-magnetic spectrum. All the data collected have now been analysed and is being prepared for the final image Survey paper. In this paper we present details of the mission, and some statistics of the images and brightness temperatures.

Keywords

Surveys – galaxies: active
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S238: Black Holes from Stars to Galaxies – Across the Range of Masses , August 2006 , pp. 357 - 358
Copyright
Copyright © International Astronomical Union 2007

References

Dodson, R. et al. 2007, in preparation (P2)Google Scholar
Hirabayashi, H. et al. 2000, PASJ, 52, 997CrossRefGoogle Scholar
Horiuchi, S. et al. 2004, ApJ, 616, 110CrossRefGoogle Scholar
Scott, W. K. et al. 2004, ApJS, 155, 33 (P1)CrossRefGoogle Scholar