1.1k citations · 6.7k across the 79 of their papers we have counts for
7 papers · 1 filter
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…
Evolution of hard X-ray photon index in black-hole X-ray binaries: hints for accretion physics
Hao Liu, AiJun Dong, ShanShan Weng +1
The anti- and positive correlations between X-ray photon index and Eddington-scaled X-ray luminosity were found in decay phase of X-ray binary outbursts and a sample of active gala…
Evaluating the classification of Fermi BCUs from the 4FGL Catalog Using Machine Learning
Shi-Ju Kang, Enze Li, Wujing Ou +4
The recently published fourth Fermi Large Area Telescope source catalog (4FGL) reports 5065 gamma-ray sources in terms of direct observational gamma-ray properties. Among the sourc…
First M87 Event Horizon Telescope Results. III. Data Processing and Calibration
The Event Horizon Telescope Collaboration
We present the calibration and reduction of Event Horizon Telescope (EHT) 1.3mm radio wavelength observations of the supermassive black hole candidate at the center of the radio ga…
First M87 Event Horizon Telescope Results. II. Array and Instrumentation
The Event Horizon Telescope Collaboration
The Event Horizon Telescope (EHT) is a very long baseline interferometry (VLBI) array that comprises millimeter- and submillimeter-wavelength telescopes separated by distances comp…
Jet Power of Jetted Active Galactic Nuclei: Implication for Evolution and Unification
Xu-Liang Fan, Qingwen Wu
We construct samples of jetted active galactic nuclei (AGNs) with low-frequency radio data from the recent released TGSS AD1 catalog at 150 MHz. With these samples, we compare the…