Gabányi, Krisztina (author), Frey, Sándor (author), An, Tao (author), Cao, Hongmin (author), Paragi, Zsolt (author), Gurvits, L. (author), Zhang, Yingkang (author), Sbarrato, Tullia (author), Krezinger, Máté (author) Less than 200 radio-loud active galactic nuclei are known above redshift 4. Around 40 of them have been observed at milliarcsecond (mas) scale resolution with very long baseline interferometry (VLBI) technique. Some of them are unresolved, compact, relativistically beamed objects, and blazars with jets pointing at small angles to the observer...
journal article 2021
