Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Taak, Yoon Chan"'
Autor:
Taak, Yoon Chan, Treu, Tommaso
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 determining cosmological parameters, require the source QSOs to be vari
Externí odkaz:
http://arxiv.org/abs/2304.02784
We consider the effects of strong gravitational lensing by galaxy-scale deflectors on the observations of high-energy (E$\gg$GeV) neutrinos (HEN). For HEN at cosmological distances, the optical depth for multiple imaging is $\sim 10^{-3}$, implying t
Externí odkaz:
http://arxiv.org/abs/2212.08793
Autor:
Kim, Yongjung, Im, Myungshin, Jeon, Yiseul, Kim, Minjin, Jiang, Linhua, Shin, Suhyun, Choi, Changsu, Hyun, Minhee, Jun, Hyunsung D., Kim, Dohyeong, Kim, Duho, Kim, Jae-Woo, Kim, Ji Hoon, Lee, Bumhyun, Lee, Seong-Kook, Molina, Juan, Pak, Soojong, Park, Won-Kee, Taak, Yoon Chan, Yoon, Yongmin
We present the result of the Infrared Medium-deep Survey (IMS) $z\sim6$ quasar survey, using the combination of the IMS near-infrared images and the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) optical images. The traditional color-selection
Externí odkaz:
http://arxiv.org/abs/2207.12282
Publikováno v:
A&A 665, A5 (2022)
Galaxies and their central supermassive black holes are known to coevolve, but the physical background for this is unknown as of yet. The High-$z$ Universe probed via Lensing by QSOs (HULQ) project aims to investigate this coevolution by using quasi-
Externí odkaz:
http://arxiv.org/abs/2207.10726
Autor:
Hwang, Sungyong, Im, Myungshin, Taak, Yoon Chan, Paek, Insu, Choi, Changsu, Shin, Suhyun, Lee, Sang-Yun, Ji, Tae-Geun, Pak, Soojong, Lee, Hye-In, Ahn, Hojae, Han, Jimin, Kim, Changgon, Marshall, Jennifer, Johns-Krull, Christopher M., Gibson, Coyne A., Schmidt, Luke, Prochaska, Travis
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 constrain the neutrino emission mechanism, but the blazar nature of TXS 050
Externí odkaz:
http://arxiv.org/abs/2011.14049
Autor:
Kim, Yongjung, Im, Myungshin, Jeon, Yiseul, Kim, Minjin, Pak, Soojong, Hyun, Minhee, Taak, Yoon Chan, Shin, Suhyun, Lim, Gu, Paek, Gregory S. H., Paek, insu, Jiang, Linhua, Choi, Changsu, Hong, Jueun, Ji, Tae-Geun, Jun, Hyunsung D., Karouzos, Marios, Kim, Dohyeong, Kim, Duho, Kim, Jae-woo, Kim, Ji Hoon, Lee, Hye-in, Lee, Seong-Kook, Park, Won-Kee, Yoon, Yongmin, Byeon, Seoyeon, Hwang, Sungyong, Kim, Joonho, Kim, Sophia, Park, Woojin
Faint $z\sim5$ quasars with $M_{1450}\sim-23$ mag are known to be the potentially important contributors to the ultraviolet ionizing background in the post-reionization era. However, their number density has not been well determined, making it diffic
Externí odkaz:
http://arxiv.org/abs/2010.05859
Autor:
Taak, Yoon Chan, Im, Myungshin
It is unclear how galaxies and their central supermassive black holes (SMBHs) co-evolve across cosmic time, especially for the non-local universe ($z \gtrsim 0.5$). The High-$z$ Universe probed via Lensing by QSOs (HULQ) project proposes to utilize q
Externí odkaz:
http://arxiv.org/abs/2006.05423
Autor:
Shin, Suhyun, Im, Myungshin, Kim, Yongjung, Hyun, Minhee, Pak, Soojong, Jeon, Yiseul, Ji, Tae-Geun, Ahn, Hojae, Byeon, Seoyeon, Han, Jimin, Hwang, Sungyong, Kim, Sophia, Lim, Gu, Paek, Insu, Paek, Gregory S. H., Taak, Yoon Chan, Choi, Changsu, Hong, Jueun, Jun, Hyunsung David, Kim, Dohyeong, Kim, Duho, Kim, Minjin, Kim, Jae-Woo, Kim, Ji Hoon, Lee, Hye-In, Lee, Seong-Kook, Park, Won-Kee, Park, Woojin, Yoon, Yongmin
The intergalactic medium (IGM) at $z\sim$ 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 are faint quasars with $-26 \lesssim M_{\rm 1450} \lesssim -23$, but
Externí odkaz:
http://arxiv.org/abs/2003.00709
Autor:
Im, Myungshin, Choi, Changsu, Hwang, Sungyong, Lim, Gu, Kim, Joonho, Kim, Sophia, Paek, Gregory S. H., Lee, Sang-Yun, Yoon, Sung-Chul, Jung, Hyunjin, Sung, Hyun-Il, Jeon, Yeong-beom, Ehgamberdiev, Shuhrat, Burhonov, Otabek, Milzaqulov, Davron, Parmonov, Omon, Lee, Sang Gak, Kang, Wonseok, Kim, Taewoo, Kwon, Sun-gill, Pak, Soojong, Ji, Tae-Geun, Lee, Hye-In, Park, Woojin, Ahn, Hojae, Byeon, Seoyeon, Han, Jimin, Gibson, Coyne, Wheeler, J. Craig, Kuehne, John, Johns-Krull, Chris, Marshall, Jennifer, Hyun, Minhee, Lee, Seong-Kook J., Kim, Yongjung, Yoon, Yongmin, Paek, Insu, Shin, Suhyun, Taak, Yoon Chan, Kang, Juhyung, Choi, Seoyeon, Jeong, Mankeun, Jung, Moo-Keon, Kim, Hwara, Kim, Jisu, Lee, Dayae, Park, Bomi, Park, Keunwoo, O, Seong A
Intensive Monitoring Survey of Nearby Galaxies (IMSNG) is a high cadence observation program monitoring nearby galaxies with high probabilities of hosting supernovae (SNe). IMSNG aims to constrain the SN explosion mechanism by inferring sizes of SN p
Externí odkaz:
http://arxiv.org/abs/1901.11353
Autor:
Kim, Dohyeong, Im, Myungshin, Canalizo, Gabriela, Kim, Minjin, Kim, Ji Hoon, Woo, Jong-Hak, Taak, Yoon Chan, Kim, Jae-Woo, Lazarova, Mariana
Publikováno v:
2018ApJS..238...37K
We present medium-resolution spectra ($R \sim 2000$--4000) at 0.4--1.0\,$\mu$m and 0.7--2.5\,$\mu$m of 16 active galactic nuclei (AGNs) selected with red color in the near-infrared (NIR) of $J - K > 2.0$ mag at $z \sim 0.3$. We fit the H$\beta$, H$\a
Externí odkaz:
http://arxiv.org/abs/1812.06991