62 citations · 150 across the 28 of their papers we have counts for
29 papers
Characterizing the origins of gamma-ray variability of the jetted active galactic nuclei observed with the Fermi-LAT
Yongyun Chen, Qiusheng Gu, Junhui Fan +5
We conducted an analysis of gamma-ray variability in a large sample of jetted active galactic nuclei (AGNs) by utilizing archival Fermi-LAT light curves and applying damped random…
A universal relationship between the variability timescale and black hole mass in black hole jetted and non-jetted accreting systems
Yongyun Chen, Qiusheng Gu, Junhui Fan +4
A long-term variability study spanning a range of black hole mass systems, from microquasars hosting stellar-mass black holes to active galactic nuclei (AGNs) harboring supermassiv…
Identifying Compton-thick active galactic nuclei in the COSMOS. II. Searching among mid-infrared selected AGNs
Xiaotong Guo, Qiusheng Gu, Guanwen Fang +7
Compton-thick active galactic nuclei (CT-AGNs), defined by column density , are so heavily absorbed that their X-ray e…
Identifying Compton-thick AGNs with Machine learning algorithm in Chandra Deep Field-South
Rui Zhang, Xiaotong Guo, Qiusheng Gu +7
Compton-thick active galactic nuclei (CT-AGNs), which are defined by column density , emit feeble X-ray radiation, eve…
The relation between black hole spin, star formation rate, and black hole mass for supermassive black holes
Yongyun Chen, Qiusheng Gu, Junhui Fan +4
Both theoretical models and observational evidence indicate that jets and/or outflows driven by central active supermassive black holes exert a significant feedback effect on the o…
The relation between black hole spin and star formation in massive star-forming galaxies
Yongyun Chen, Qiusheng Gu, Junhui Fan +4
It has always been believed that feedback from active galactic nuclei (AGN) has an important impact on star formation in massive galaxies. Black hole spin is an important physical…
Optical+NIR analysis of a Newly Confirmed Einstein ring at z1 from the Kilo-Degree Survey: Dark matter fraction, total and dark matter density slope and IMF
Rui Li, Nicola R. Napolitano, Giuseppe D Ago +16
We report the spectroscopic confirmation of a bright blue Einstein ring in the Kilo Degree Survey (KiDS) footprint: the Einstein ``blue eye''. Spectroscopic data from X-Shooter at…
Identifying Compton-thick AGNs in the COSMOS. I. Among X-ray AGNs with Low Photon Counts
Xiaotong Guo, Qiusheng Gu, Guanwen Fang +4
Compton-thick active galactic nuclei (CT-AGNs), characterized by a significant absorption with column densities of , emi…
An efficient unsupervised classification model for galaxy morphology: Voting clustering based on coding from ConvNeXt large model
Guanwen Fang, Yao Dai, Zesen Lin +6
In this work, we update the unsupervised machine learning (UML) step by proposing an algorithm based on ConvNeXt large model coding to improve the efficiency of unlabeled galaxy mo…
The relation between black hole spin and molecular gas in massive galaxies
Chen Yongyun, Gu Qiusheng, Fan Junhui +4
Molecular gas is the key probe for the complex interaction between the accretion of black holes and star formation of the host galaxy of active galactic nuclei (AGN). The molecular…
Jets, accretion and spin in supermassive black holes
Yongyun Chen, Qiusheng Gu, Jianghe Yang +5
The theoretical model suggests that relativistic jets of AGN rely on the black hole spin and/or accretion. We study the relationship between jet, accretion, and spin using supermas…
Multi-band analysis of strong gravitationally lensed post-blue nugget candidates from the Kilo-Degree Survey
Rui Li, Nicola R. Napolitano, Linghua Xie +7
During the early stages of galaxy evolution, a significant fraction of galaxies undergo a transitional phase between the ``blue nugget" systems, which arise from the compaction of…
Jet power extracted from ADAFs and the application to Fermi BL Lacertae objects
Chen Yongyun, Gu Qiusheng, Fan Junhui +4
We calculate the jet power of the Blandford-Znajek (BZ) model and the hybrid model based on the self-similar solution of advection-dominated accretion flows (ADAFs). We study the f…
The comparison of optical variability of broad-line Seyfert 1 and narrow-line Seyfert 1 galaxies from the view of Pan-STARRS
Hongtao Wang, Chao Guo, Hongmin Cao +3
By means of the data sets of the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS), we investigate the relationship between the variability amplitude and luminosity…
Toward a stellar population catalog in the Kilo Degree Survey: the impact of stellar recipes on stellar masses and star formation rates
Linghua Xie, Nicola R. Napolitano, Xiaotong Guo +11
The Kilo Degree Survey (KiDS) is currently the only sky survey providing optical () plus near-infrared (NIR, ) seeing matched photometry over an area larger than 100…
General Physical Properties of Fermi blazars
Yongyun Chen, Qiusheng Gu, Junhui Fan +6
We study the general physical properties of Fermi blazars using the Fermi fourth source catalog data (4FGL-DR2). The quasi-simultaneous multiwavelength data of Fermi blazar are fit…
General Physical Properties of Gamma-Ray-emitting Radio Galaxies
Yongyun Chen, Qiusheng Gu, Junhui Fan +4
We study the radio galaxies with known redshift detected by the Fermi satellite after 10 years of data (4FGL-DR2). We use a one-zone leptonic model to fit the quasi-simultaneous mu…
Curvature of the spectral energy distribution, Compton dominance and synchrotron peak frequency in jetted AGNs
Chen Yongyun, Gu Qiusheng, Fan Junhui +4
We collect a large sample with a reliable redshift detected by the Fermi satellite after 10 years of data (4FGL-DR2), including blazars, -ray Narrow-line Seyfert 1 galaxies (…
Jet power, intrinsic -ray luminosity and accretion in jetted AGN
Chen Yonhyun, Gu Qiusheng, Fan Junhui +4
The correlation between the kinetic jet power , intrinsic -ray luminosity () and accretion () may reveal the underlying jet physics in va…
Multiwavelength Analysis of a Nearby Heavily Obscured AGN in NGC 449
Xiaotong Guo, Qiusheng Gu, Jun Xu +5
We presented the multiwavelength analysis of a heavily obscured active galactic nucleus (AGN) in NGC 449. We first constructed a broadband X-ray spectrum using the latest NuSTAR an…
The jet formation mechanism of Gamma-ray Narrow-line Seyfert 1 Galaxies
Chen Yongyun, Gu Qiusheng, Fan Junhui +4
Under the coronal magnetic field, we estimate the maximal jet power of the Blandford-\Znajek (BZ) mechanism, Blandford-\Payne (BP) mechanism, and hybrid model. The jet power of the…
The origin of the soft X-ray excess in the narrow-line Seyfert 1 galaxy SBS 1353+564
Xinpeng Xu, Nan Ding, Qiusheng Gu +2
We present for the first time the timing and spectral analyses for a narrow-line Seyfert 1 galaxy, SBS 1353+564, using \it{XMM-Newton} and \it{Swift} multi-band observations from 2…
Multi-wavelength Selected Compton-thick AGNs in Chandra Deep Field-South Survey
Xiaotong Guo, Qiusheng Gu, Nan Ding +2
Even in deep X-ray surveys, Compton-thick active galactic nuclei (CT AGNs, ) are difficult to be identified due to X-ray flux…
From the Fermi blazar sequence to the relation between Fermi blazars and gamma-ray Narrow-line Seyfert 1 Galaxies
Yongyun Chen, Qiusheng Gu, Junhui Fan +6
We use the third catalog of blazars detected by Fermi/LAT (3LAC) and gamma-ray Narrow-line Seyfert 1 Galaxies (gamma-NLSy1s) to study the blazar sequence and relationship between t…