395 citations · 1.1k across the 55 of their papers we have counts for
16 papers · 1 filter
Milliarcsecond-scale radio structure of the most distant BL Lac object candidate at redshift 6.57
S. Frey, Y. Zhang, K. Perger +7
The existence of accreting supermassive black holes up to billions of solar masses at early cosmological epochs (in the context of this work, redshifts z>=6) requires very fast gro…
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…
Strange Quasar Candidates with Abnormal Astrometric Characteristics from Gaia EDR3 and SDSS (SQUAB-II): Optical Identifications
Xiang Ji, Zhen-Ya Zheng, Qiqi Wu +7
There are some strange quasars with multiple Gaia detections or observed with abnormal astrometric characteristics, such as with large proper motions or significant astrometric noi…
From binary to singular: the AGN PSO J334.2028+1.4075 under the high-resolution scope
P. Benke, K. É. Gabányi, S. Frey +6
PSO J334.2028+1.4075 (PSO J334) is a luminous quasar located at redshift z=2.06. The source gained attention when periodic flux density variations were discovered in its optical li…
The OH Megamaser Emission in Arp\,220: the rest of the story
W. A. Baan, J. N. H. S. Aditya, T. An +1
The OH Megamaser emission in the merging galaxy Arp220 has been re-observed with the Multi-Element Radio Linked Interferometer Network (MERLIN) and the European VLBI Network (EVN).…
Mildly Relativistic Motion in the Radio Quiet Quasar PG 1351+640
Ailing Wang, Tao An, Shaoguang Guo +8
Measuring the proper motion of the emission component in radio-quiet quasars (RQQs) could help to distinguish between the origins of the radio emission and to understand whether th…