Very long baseline interferometry observations of the high-redshift blazar candidate J0141–5427

Abstract Active galactic nuclei (AGN) have been observed as far redshift $z \sim 7$ . They are crucial in investigating the early Universe well growth of supermassive black holes at their centres. Radio-loud AGN with jets seen a small viewing angle called blazars and show relativistic boosting emission. Thus, apparently brighter easier to detect high-redshift Universe. DES J014132.4–542749.9 is radio-luminous but X-ray weak blazar candidate = 5$ We conducted high-resolution radio interferometric observations this source Australian Long Baseline Array $1.7$ $8.5$ GHz. A single, compact radio-emitting feature was detected both frequencies flat spectrum. derived milliarcsecond-level accurate position object. The frequency dependence its brightness temperature similar that sources lower redshifts. Based on our observations, we can confirm nature. compared properties those two other similarly X-ray-weak radio-bright AGN, found they very different characteristics.