1.1k citations · 6.7k across the 79 of their papers we have counts for
14 papers · 1 filter
Steep Balmer decrement in weak AGNs may be not caused by dust extinction: clues from low-luminosity AGNs and changing-look AGNs
Jiancheng Wu, Qingwen Wu, Hanrui Xue +2
The hydrogen Balmer decrement (e.g., ) is widely adopted as an indicator of the internal reddening of active galactic nuclei (AGNs). This is challenged by some low-lumin…
In-situ star formation in accretion disk and explanation for correlation between black hole mass and metallicity in AGNs
Xiao Fan, Qingwen Wu
Recent observations show that the metallicity of the broad line region () in active galactic nuclei (AGNs) is solar-to-supersolar, which is positively correlated with…
Evidence for quasar fast outflows being accelerated at the scale of tens of parsecs
Zhicheng He, Guilin Liu, Tinggui Wang +14
Quasar outflows may play a crucial role in regulating the host galaxy, although the spatial scale of quasar outflows remain a major enigma, with their acceleration mechanism poorly…
Event Horizon Telescope observations of the jet launching and collimation in Centaurus A
Michael Janssen, Heino Falcke, Matthias Kadler +236
Very-long-baseline interferometry (VLBI) observations of active galactic nuclei at millimeter wavelengths have the power to reveal the launching and initial collimation region of e…
Polarimetric properties of Event Horizon Telescope targets from ALMA
Ciriaco Goddi, Ivan Marti-Vidal, Hugo Messias +31
We present the results from a full polarization study carried out with ALMA during the first VLBI campaign, which was conducted in Apr 2017 in the 3mm and 1.3mm bands, in con…
Evidence for changing-look AGNs is caused by change of accretion mode
Hao liu, Qingwen Wu, Bing Lyu +1
The discovery of changing-look active galactic nuclei (CL AGNs), with appearance and disappearance of broad emission lines and/or with strong variation of line-of-sight column dens…