76 citations · 162 across the 8 of their papers we have counts for
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The Infrared Medium-deep Survey. VI. Discovery of Faint Quasars at with a Medium-band-based Approach
Yongjung Kim, Myungshin Im, Yiseul Jeon +25
The faint quasars with mag are known to hold the key to the determination of the ultraviolet emissivity for the cosmic re-ionization. But only a few have been identi…
Intra-night optical variability of AGN in the COSMOS field with the KMTNet
Joonho Kim, Marios Karouzos, Myungshin Im +5
Active Galactic Nucleus (AGN) variability can be used to study the physics of the region in the vicinity of the central black hole. In this paper, we investigated intra-night optic…
Calibration and Limitations of the Mg II line-based Black Hole Masses
Jong-Hak Woo, Huynh Anh N. Le, Marios Karouzos +5
We present the single-epoch black hole mass (M) calibrations based on the rest-frame UV and optical measurements of Mg II 2798Å and H 4861Å lines and AGN continuum, u…
The Infrared Medium-deep Survey. IV. Low Eddington Ratio of A Faint Quasar at : Not Every Supermassive Black Hole is Growing Fast in the Early Universe
Yongjung Kim, Myungshin Im, Yiseul Jeon +15
To date, most of the luminous quasars known at have been found to be in maximal accretion with the Eddington ratios, , suggesting enhanced nuclear activ…