43 citations · 317 across the 23 of their papers we have counts for
11 papers · 1 filter
Intra-Day Variability Observations of Two Dozens of Blazars at 4.8 GHz
Xiang Liu, Xin Wang, Ning Chang +4
Two dozens of radio loud active galactic nuclei (AGNs) have been observed with Urumqi 25 m radio telescope in order to search for intra-day variability (IDV). The target sources ar…
A compact core-jet structure in the changing-look Seyfert NGC 2617
Jun Yang, Zsolt Paragi, Robert J. Beswick +9
The nearby face-on spiral galaxy NGC 2617 underwent an unambiguous 'inside-out' multi-wavelength outburst in Spring 2013, and a dramatic Seyfert type change probably between 2010 a…
A parsec-scale faint jet in the nearby changing-look Seyfert galaxy Mrk 590
J. Yang, I. van Bemmel, Z. Paragi +9
Broad Balmer emission lines in active galactic nuclei (AGN) may display dramatic changes in amplitude, even disappearance and re-appearance in some sources. As a nearby galaxy at a…
Radio activity of supermassive black holes with extremely high accretion rates
Xiaolong Yang, Su Yao, Jun Yang +8
Radio emission from the high- and super-Eddington accreting active galactic nuclei (AGNs) has various origins: a persistent jet, the magnetized corona and the wind-like outflows. I…
A two-sided but significantly beamed jet in the supercritical accretion quasar IRAS F11119+3257
Jun Yang, Zsolt Paragi, Tao An +3
Highly accreting quasars are quite luminous in the X-ray and optical regimes. While, they tend to become radio quiet and have optically thin radio spectra. Among the known quasars,…
A parsec-scale radio jet launched by the central intermediate-mass black hole in the dwarf galaxy SDSS J090613.77+561015.2?
Jun Yang, Leonid I. Gurvits, Zsolt Paragi +4
The population of intermediate-mass black holes (IMBHs) in nearby dwarf galaxies plays an important "ground truth" role in exploring black hole formation and growth in the early Un…