1546+027: high resolution radio structure of a compact quasar

Astronomy and Astrophysics – Astrophysics

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Scientific paper

A 5-GHz space VLBI image of a very compact quasar 1546+027 is presented with an unprecedented angular resolution at this observing frequency. The source has been observed in a broad spectral region (radio, optical, X-ray, gamma-ray) in the recent years. Our image shows changes in the source structure compared with earlier observations. These changes can also be seen at other radio frequencies. The source is a candidate for detecting apparent superluminal motion. We estimate the value of the rest-frame brightness temperature of the source, TB = 0.46x1012 K.

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