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This paper represents the work of several years of observation of CTA 102 with both single dish telescopes and interferometric arrays, covering wavelengths from 1.2 cm to 1.3 mm. The resolution of the maps covers an order of magnitude from 0.5 mas to 50 μas. The images presented demonstrate the rapid structural changes in this source. These rapid structural changes correlates with the outbursts seen in the total flux, turnover frequency and in the spectral index. We have calculated the Brightness Temperatures of the components (TB ) directly from the determined component sizes and also using the logarithmic variability amplitudes and timescales to calculate the TB s. Both the methods yielded measurements of source frame T Bs no higher than ∼a few × 10 12 K. We find that the observed average proper motion is 0.4 0.07 mas/yr, which corresponds to an apparent transverse velocity of 11 ± 2 c. Copyright © 2003 EDP Sciences. This material is posted here with permission of EDP Sciences. Such permission of EDP Sciences does not in any way imply EDP Sciences endorsement of any of the University of Halmstads's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from EDP Sciences. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

We report a successful VLBI observation at 147 GHz (2.1 mm) on the 3 100 km long baseline between the telescopes at Metsahovi (Finland) and Pico Veleta (Spain). The sources 3C 273B and 3C 279 were detected with a SNR of∼10. For these sources we estimate that 25-30% of the total flux is detectable as correlated flux on the 3 100 km baseline, which gives at 147 GHz a lower limit of the brightness temperature of the inner VLBI jet region of ∼1×10 1 0 K.

VSOPシンポジウム(2000年1月19日-21日. 宇宙科学研究所(ISAS)）, 相模原市, 神奈川県, VSOP Symposium (January 19-21, 2000. Institute of Space and Astronautical Science(ISAS)), Sagamihara, Kanagawa Japan, 資料番号: SA6000155050