581 citations · 4.1k across the 72 of their papers we have counts for
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Variability-selected low-luminosity active galactic nuclei candidates in the 7 Ms Chandra Deep Field-South
N. Ding, B. Luo, W. N. Brandt +13
In deep X-ray surveys, active galactic nuclei (AGNs) with a broad range of luminosities have been identified. However, cosmologically distant low-luminosity AGN (LLAGN, $L_{\mathrm…
Systematic investigation of X-ray spectral variability of TeV blazars during flares in the era
Yijun Wang, Yongquan Xue, Shifu Zhu +1
Utilizing all the 16-year observations, we analyze the X-ray spectra of 32 TeV blazars, and perform a systematic investigation of X-ray spectral variability for the 5 bright…
Evolution of quasar stochastic variability along its main sequence
Mouyuan Sun, Yongquan Xue, Junxian Wang +2
We explore the evolution of the time variability (in the optical -band and on timescales of weeks to years) of SDSS Stripe 82 quasars along the quasar main sequence. A parent sa…
A unique distant submillimeter galaxy with an X-ray-obscured radio-luminous active galactic nucleus
X. W. Shu, Y. Q. Xue, D. Z. Liu +10
We present a multiwavelength study of an atypical submillimeter galaxy in the GOODS-North field, with the aim to understand its physical properties of stellar and dust emission, as…
Winds Can "Blow Up" AGN Accretion Disk Sizes
Mouyuan Sun, Yongquan Xue, Jonathan R. Trump +1
Recent multi-band variability studies have revealed that active galactic nucleus (AGN) accretion disc sizes are generally larger than the predictions of the classical thin disc by…
The XMM-SERVS survey: new XMM-Newton point-source catalog for the XMM-LSS field
C. -T. J. Chen, W. N. Brandt, B. Luo +28
We present an X-ray point-source catalog from the XMM-Large Scale Structure survey region (XMM-LSS), one of the XMM-Spitzer Extragalactic Representative Volume Survey (XMM-SERVS) f…
A falling Corona model for the anomalous behavior of the broad emission lines in NGC 5548
Mouyuan Sun, Yongquan Xue, Zhenyi Cai +1
NGC 5548 has been intensively monitored by the AGN Space Telescope and Optical Reverberation Mapping collaboration. Approximately after half of the light curves, the correlation be…
The Sloan Digital Sky Survey Reverberation Mapping Project: the CIV Blueshift, Its Variability, and Its Dependence Upon Quasar Properties
Mouyuan Sun, Yongquan Xue, Gordon T. Richards +4
We use the multi-epoch spectra of 362 quasars from the Sloan Digital Sky Survey Reverberation Mapping project to investigate the dependence of the blueshift of CIV relative to MgII…