activity
19982023
most citedSub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei III. Kinematics of Parsec-Scale Radio Jets

424 citations · 1.7k across the 23 of their papers we have counts for

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astro-ph.GA2023

VLBI Observations of a sample of Palomar-Green quasars II: characterising the parsec-scale radio emission

Ailing Wang, Tao An, Yingkang Zhang +4

This study uses multi-frequency Very Long Baseline Interferometry (VLBI) to study the radio emission from 10 radio-quiet quasars (RQQs) and four radio-loud quasars (RLQs). The dive…

astro-ph.IM2023

The Search for Extraterrestrial Civilizations: A Scientific, Technical, Political, Social, and Cultural Adventure

K. I. Kellermann

I review the scientific and technical history of the Search for Extraterrestrial Intelligence (SETI), discuss the impact of the political involvement, and speculate on the nature o…