出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要: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-ve percent of the scientic 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 electromagnetic spectrum. All the data collected have now been analysed and is
being prepared for the nal image Survey paper. In this paper we present details of the mission,
images of the sources, and some statistics of the contributions and completeness.