2003A&A...405..473R


Query : 2003A&A...405..473R

2003A&A...405..473R - Astronomy and Astrophysics, volume 405, 473-485 (2003/7-2)

Multifrequency interferometer and radio continuum monitoring observations of CTA102.

RANTAKYROE F.T., WIIK K., TORNIKOSKI M., VALTAOJA E. and BAATH L.B.

Abstract (from CDS):

This paper represents the work of several years of observation of CTA102 with both single dish telescopes and interferometric arrays, covering wavelengths from 1.2cm to 1.3mm. The resolution of the maps covers an order of magnitude from 0.5mas to 50µas. 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 TBs. Both the methods yielded measurements of source frame TBs no higher than ∼a few x1012K. We find that the observed average proper motion is ∼0.4±0.07mas/yr, which corresponds to an apparent transverse velocity of 11±2c.

Abstract Copyright:

Journal keyword(s): shock waves - quasars: individual: CTA 102 - galaxies: jets - radiation mechanisms: non-thermal

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 3C 279 Bla 12 56 11.1663795384 -05 47 21.528432492   18.01 17.75 15.87   ~ 2863 2
2 4C 11.69 QSO 22 32 36.4089639768 +11 43 50.904601176   17.75 17.33     ~ 1034 2

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2022.05.28-22:31:29

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