Illustration of multiwavelength 3C 279 jet structure in April 2017. The observing epochs, arrays, and frequencies are noted at the top of each panel. The color bars show the pixel values in Jy beam−1. The white circles in the bottom left corners indicate the convolving beams. The white rectangles shows the field of view of the next panels at the higher 86 and 230 GHz frequencies. We note that the centers of the images (0,0) correspond to the location of the peak of total intensity. (From left to right) the beam sizes are 150 × 380, 50 × 139, and 20 × 20 μas2. For a spatially resolved emitting region, an intensity of 1 Jy beam−1 in the 43, 86, and 230 GHz images correspond to brightness temperatures of 1.16 × 1010, 2.37 × 1010, and 5.78 × 1010 K, respectively.
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