Instantaneous 1-22 GHz Spectra of 214 VSOP Survey Sources

Details Instantaneous 1-22 GHz Spectra of 214 VSOP Survey Sources Instantaneous 1-22 GHz Spectra of 214 VSOP Survey Sources

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aprs.conf..193k&link_type=abstract

Astrophysical Phenomena Revealed by Space VLBI, Proceedings of the VSOP Symposium, held at the Institute of Space and astronauti

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We present selected results of our monitoring, which form the basis of a ground spectra support for a space VLBI survey in the framework of the VSOP work team project. The 214 sources were selected from the HALCA continuum survey list, containing 230 sources with declinations north of -30 degrees (Fomalont et al., these proceedings). Every 1-22 GHz spectrum was measured with the RATAN-600 radio telescope at six wavelengths of 1.4, 2.7, 3.9, 7.7, 13, and 31cm, over a period of a few minutes (ten minutes or more near the pole). Almost all sources are suggested to have continuous jets at milliarcsecond scales. This conclusion is supported by the analysis of the 214 individual spectra, their mean normalized statistical shape in the local frame, and the long-term variable spectra of 23 objects. Model and statistical analysis suggest the common physical origin of various radio sources in the studied sample.

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