43 citations · 214 across the 15 of their papers we have counts for
16 papers
SN 2022riv in RX J2129: Discovery, Spectroscopic Classification, and Microlensing of a Strongly Lensed Type Ia Supernova from JWST and HST Observations
Birendra Dhanasingham, Patrick L. Kelly, Wenlei Chen +27
The multiply imaged SN 2022riv was discovered through a search of galaxy cluster fields as part of a Hubble Space Telescope (HST) SNAP program to find highly magnified stars. The s…
Strong Lensed QSOs with Variability Detectable by LSST: How many are there?
Yoon Chan Taak, Tommaso Treu
Strong lensed quasi-stellar objects (QSOs) are valuable probes of the universe in numerous aspects. Two of these applications, reverberation mapping and measuring time delays for d…
Strong Lensing of High-Energy Neutrinos
Yoon Chan Taak, Tommaso Treu, Yoshiyuki Inoue +1
We consider the effects of strong gravitational lensing by galaxy-scale deflectors on the observations of high-energy (EGeV) neutrinos (HEN). For HEN at cosmological distances…
The Infrared Medium-deep Survey. IX. Discovery of Two New Quasars and Space Density down to mag
Yongjung Kim, Myungshin Im, Yiseul Jeon +17
We present the result of the Infrared Medium-deep Survey (IMS) quasar survey, using the combination of the IMS near-infrared images and the Canada-France-Hawaii Telescope…
Medium-band observation of the neutrino emitting blazar, TXS 0506+056
Sungyong Hwang, Myungshin Im, Yoon Chan Taak +15
TXS 0506+056 is a blazar that has been recently identified as the counterpart of the neutrino event IceCube-170922A. Understanding blazar type of TXS 0506+056 is important to const…
The Infrared Medium-deep Survey. VIII. Quasar Luminosity Function at
Yongjung Kim, Myungshin Im, Yiseul Jeon +27
Faint quasars with mag are known to be the potentially important contributors to the ultraviolet ionizing background in the post-reionization era. Howeve…
High- Universe probed via Lensing by QSOs (HULQ) I. Number Estimates of QSO-QSO and QSO-Galaxy Lenses
Yoon Chan Taak, Myungshin Im
It is unclear how galaxies and their central supermassive black holes (SMBHs) co-evolve across cosmic time, especially for the non-local universe (). The High- Un…
The Infrared Medium-deep Survey. \Romannum{7}. Faint Quasars at in the ELAIS-N1 Field
Suhyun Shin, Myungshin Im, Yongjung Kim +26
The intergalactic medium (IGM) at 5 to 6 is largely ionized, and yet the main source for the IGM ionization in the early universe is uncertain. Of the possible contributors…
Intensive Monitoring Survey of Nearby Galaxies (IMSNG)
Myungshin Im, Changsu Choi, Sungyong Hwang +46
Intensive Monitoring Survey of Nearby Galaxies (IMSNG) is a high cadence observation program monitoring nearby galaxies with high probabilities of hosting supernovae (SNe). IMSNG a…
Medium-resolution Optical and Near-Infrared Spectral Atlas of 16 2MASS-selected NIR-red Active Galactic Nuclei at
Dohyeong Kim, Myungshin Im, Gabriela Canalizo +6
We present medium-resolution spectra (--4000) at 0.4--1.0\,m and 0.7--2.5\,m of 16 active galactic nuclei (AGNs) selected with red color in the near-infrared (NI…
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…
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…
The Infrared Medium-deep Survey. III. Survey of Luminous Quasars at 4.7 z 5.4
Yiseul Jeon, Myungshin Im, Dohyeong Kim +21
We present our first results of the survey for high redshift quasars at . The search for quasars in this redshift range has been known to be challe…
Discovery of a Supercluster at 0.91 and Testing the CDM Cosmological Model
J. -W. Kim, M. Im, S. -K. Lee +13
The CDM cosmological model successfully reproduces many aspects of the galaxy and structure formation of the universe. However, the growth of large-scale structures (LSSs) in th…
Discovery of A Faint Quasar at z~6 and Implications for Cosmic Reionization
Yongjung Kim, Myungshin Im, Yiseul Jeon +15
Recent studies suggest that faint active galactic nuclei may be responsible for the reionization of the universe. Confirmation of this scenario requires spectroscopic identificatio…
The Infrared Medium-Deep Survey II: How to Trigger Radio-AGN? Hints from Their Environments
Marios Karouzos, Myungshin Im, Jae-Woo Kim +16
Activity at the centers of galaxies, during which the central supermassive black hole is accreting material, is nowadays accepted to be rather ubiquitous and most probably a phase…