8 citations · 19 across the 10 of their papers we have counts for
10 papers
Empirical Near-Infrared Spectral Templates from SPHEREx: Disentangling AGN and Host-Galaxy Emission
Wenke Ren, Hengxiao Guo, Zhenya Zheng +9
SPHEREx conducts the first all-sky near-infrared spectral survey over 0.75-5.0 m, spanning the transition from host-galaxy starlight to AGN-heated torus emission and enabling sp…
Sudden emergence of a low-frequency hard X-ray lag in the Seyfert 1 galaxy Mrk 1044
Jia-Lai Kang, Jun-Xian Wang
Hard X-ray lags, where low frequency variations in the hard X-ray band lag behind those in the soft band, have been detected in many active galactic nuclei (AGNs) and are generally…
Tracing Star Formation in Quasar Hosts via [O II] 3727: A Kinematically Consistent Approach
Liang Wu, Jun-Xian Wang, Luis C. Ho +2
Measuring star formation in quasar host galaxies is crucial for understanding the coevolution of supermassive black holes (SMBHs) and galaxies, yet remains observationally challeng…
A UV to X-Ray View of Soft Excess in Type 1 Active Galactic Nuclei. II. Broadband Correlations
Shi-Jiang Chen, Jun-Xian Wang, Jia-Lai Kang +5
The physical origin of soft X-ray excess (SE) is a long lasting question, with two prevailing theories -- ``warm corona'' and ``ionized reflection'' -- dominating the discussion. I…
The Average Soft X-ray Spectra of eROSITA Active Galactic Nuclei
Shi-Jiang Chen, Johannes Buchner, Teng Liu +16
Context. AGNs are strong X-ray emitters shaped by disk-corona interactions. The soft excess (0.5-2.0 keV) reveals key information about the "warm corona" bridging the disk and hot…
Disk-jet coupling across the spectral transition in supermassive black holes
Jia-Lai Kang, Chris Done, Scott Hagen +5
Accretion flows in both stellar and supermassive black holes show a distinct spectral transition. This is seen directly in binaries and changing look AGN, and also in a recent samp…
A UV to X-ray view of soft excess in type 1 AGNs: I. sample selection and spectral profile
Shi-Jiang Chen, Jun-Xian Wang, Jia-Lai Kang +5
A core sample of 59 unobscured type 1 AGNs with simultaneous XMM-Newton X-ray and UV observations is compiled from archive to probe the nature of soft X-ray excess (SE). In the fir…
A multi-faceted view of the X-ray spectral variability in Seyfert galaxy Ark 120
Lu-Xin Ren, Jun-Xian Wang, Jia-Lai Kang
Utilizing a range of techniques including multi-band light curves, softness ratio analysis, structure functions, rms spectra, cross-correlation functions, and ratios of spectra fro…
Integrated Study of X-ray Spectrum and Time Lags for HBL Mrk 421 within the Framework of the Multiple-Zone Leptonic Model
Wen Hu, Jia-Lai Kang, Zhen-Yi Cai +3
We present the timing analysis of 10 archived \XMM observations with an exposure of ks of Markarian 421. Mrk 421 is the brightest high-frequency-peaked BL Lac object (HBL) em…
On joint analysing XMM-NuSTAR spectra of active galactic nuclei
Jia-Lai Kang, Jun-Xian Wang
A recently released XMM-Newton technical note has revealed a significant calibration issue between NuSTAR and XMM-Newton EPIC, and provided an empirical correction to EPIC effectiv…