C
Chung Sik Oh
Researcher at Korea Astronomy and Space Science Institute
Publications - 61
Citations - 3252
Chung Sik Oh is an academic researcher from Korea Astronomy and Space Science Institute. The author has contributed to research in topics: Very-long-baseline interferometry & Maser. The author has an hindex of 29, co-authored 57 publications receiving 3071 citations. Previous affiliations of Chung Sik Oh include University of Tokyo & Graduate University for Advanced Studies.
Papers
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Journal ArticleDOI
Distance to NGC 281 in a Galactic Fragmenting Superbubble: Parallax Measurements with VERA
Mayumi Sato,Tomoya Hirota,Mareki Honma,Hideyuki Kobayashi,Hideyuki Kobayashi,Tetsuo Sasao,Takeshi Bushimata,Yoon Kyung Choi,Hiroshi Imai,Kenzaburo Iwadate,Takaaki Jike,Seiji Kameno,Osamu Kameya,Ryuichi Kamohara,Yukitoshi Kan-ya,Noriyuki Kawaguchi,Mi Kyoung Kim,Seisuke Kuji,Tomoharu Kurayama,Seiji Manabe,Makoto Matsui,Naoko Matsumoto,Takeshi Miyaji,Takumi Nagayama,Akiharu Nakagawa,Kayoko Nakamura,Chung Sik Oh,Toshihiro Omodaka,Tomoaki Oyama,Satoshi Sakai,Katsuhisa Sato,Katsunori M. Shibata,Yoshiaki Tamura,Kazuyoshi Yamashita +33 more
TL;DR: In this paper, the Japanese VLBI array VERA was used to perform high-precision astrometry of an H2O maser source in the Galactic star-forming region NGC 281 West, which has been considered to be part of a 300-pc superbubble.
Proceedings ArticleDOI
8192 Mbps wideband correlation for the KaVA
TL;DR: The required system so as to carry out the 8192 Mbps wideband correlation for maximum performance of Daejeon hardware correlator is introduced.
Journal ArticleDOI
Spectral analysis of a parsec-scale jet in M 87: Observational constraint on the magnetic field strengths in the jet
Hyunwook Ro,Motoki Kino,Bong Won Sohn,Kazuhiro Hada,Jong-Ho Park,Masanori Nakamura,Yuzhu Cui,Kun-Hui Yi,Aeree Chung,Jeffrey A. Hodgson,Tomohisa Kawashima,T. An,Sascha Trippe,Juan-Carlos Algaba,Jae-Young Kim,Satoko Sawada-Satoh,Kiyoaki Wajima,Zhiqiang Shen,Xiaopeng Cheng,Ilje Cho,Wu Jiang,Taehyun Jung,Jee Won Lee,Kotaro Niinuma,Junghwan Oh,Fumie Tazaki,Guang-Yao Zhao,Kazunori Akiyama,Mareki Honma,Jeong Ae Lee,R. S. Lu,Yingkang Zhang,Keiichi Asada,Lang Cui,Yoshiaki Hagiwara,Tomoya Hirota,Noriyuki Kawaguchi,Shoko Koyama,Sang-Sung Lee,Se-Jin Oh,Koichiro Sugiyama,Mieko Takamura,Xuezheng Wang,Ju-Yeon Hwang,Dong-Kyu Jung,Hyo Ryoung Kim,Jeong-Sook Kim,Hideyuki Kobayashi,Chung Sik Oh,Tomoaki Oyama,Duk-Gyoo Roh,Jae-Hwan Yeom +51 more
TL;DR: In this article , the magnetic field strength of the M 87 jet out to a distance of several thousand rs was estimated by tracking the distance-dependent changes in the synchrotron spectrum of the jet from high-resolution very long baseline interferometry observations.
Journal ArticleDOI
A study on the reliability of the daejeon hardware correlator for the kvn observation modes
Se-Jin Oh,Duk-Gyoo Roh,Jae-Hwan Yeom,Chung Sik Oh,Sang-Sung Lee,Dong-Kyu Jung,Hyo-Ryoung Kim,Hyunsoo Chung +7 more
Journal ArticleDOI
A study on the re-quantization method for preventing distortion of correlation result
Jae-Hwan Yeom,Se-Jin Oh,Duk-Gyoo Roh,Chung Sik Oh,Jin-Seung Jung,Dong-Kyu Chung,Tomoaki Oyama,Noriyuki Kawaguchi,Hideyuki Kobayashi,Kazuyuki Kawakami,Hirofumi Onuki,Kensuke Ozeki +11 more
TL;DR: A new re-quantization method after FFT processing to prevent the distortion of correlation result of VCS (VLBI Correlation Subsystem) is proposed, and the proposed 8-bit selection-type is effectively verified so that the distortionof correlation result disappeared by applying to VCS in consequence of the simulation and correlation experiments.