K
K. Horiai
Publications - 15
Citations - 317
K. Horiai is an academic researcher. The author has contributed to research in topics: Very-long-baseline interferometry & Maser. The author has an hindex of 9, co-authored 15 publications receiving 302 citations.
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Journal ArticleDOI
Astrometry of H$_2$O Masers in Nearby Star-Forming Regions with VERA I. IRAS 16293$-$2422 in $\rho$ Oph East
Hiroshi Imai,Kohichiro Nakashima,Takeshi Bushimata,Yoon Kyung Choi,Tomoya Hirota,Mareki Honma,K. Horiai,Noritomo Inomata,Kenzaburo Iwadate,Takaaki Jike,Osamu Kameya,Ryuichi Kamohara,Yukitoshi Kan-ya,Noriyuki Kawaguchi,Masachika Kijima,Hideyuki Kobayashi,Seisuke Kuji,Tomoharu Kurayama,Seiji Manabe,Takeshi Miyaji,Takumi Nagayama,Akiharu Nakagawa,Chung Sik Oh,Toshihiro Omodaka,Tomoaki Oyama,Satoshi Sakai,Sei-ichiro Sakakibara,Katsuhisa Sato,Tetsuo Sasao,Tetsuo Sasao,Katsunori M. Shibata,Rie Shimizu,Motonobu Shintani,Yoshiaki Sofue,Kasumi Sora,Hiroshi Suda,Yoshiaki Tamura,Miyuki Tsushima,Yuji Ueno,Kazuyoshi Yamashita +39 more
TL;DR: In this paper, the authors reported on results of multi-epoch VLBI observations of H2O masers associated with a low-mass young stellar object, IRAS 16293 2422 in Oph East, and a fringe-phase and position reference source, ICRF J162546.8 252738.
Journal ArticleDOI
First Fringe Detection with VERA's Dual-Beam System and Its Phase-Referencing Capability
Mareki Honma,T. Fujii,Tomoya Hirota,K. Horiai,Kenzaburo Iwadate,Takaaki Jike,Osamu Kameya,Ryuichi Kamohara,Yukitoshi Kan-ya,Noriyuki Kawaguchi,Hideyuki Kobayashi,Seisuke Kuji,Tomoharu Kurayama,Seiji Manabe,Takeshi Miyaji,Kouichirou Nakashima,Toshihiro Omodaka,Tomoaki Oyama,Satoshi Sakai,Sei-ichiro Sakakibara,Katsuhisa Sato,Tetsuo Sasao,Katsunori M. Shibata,Rie Shimizu,Hiroshi Suda,Yoshiaki Tamura,Hideki Ujihara,Akane Yoshimura +27 more
TL;DR: In this paper, the results of the first dual-beam observations with VERA (VLBI Exploration of Radio Astrometry) were presented, and the results demonstrate the high capability of phase referencing, indicating that it is a promising tool for phase-referencing VLBI astrometry at 10 µas-level accuracy.
Journal ArticleDOI
First Fringe Detection with VERA's Dual-Beam System and its Phase Referencing Capability
Mareki Honma,T. Fujii,Tomoya Hirota,K. Horiai,Kenzaburo Iwadate,Takaaki Jike,Osamu Kameya,Ryuichi Kamohara,Yukitoshi Kan-ya,K. Kawaguchi,Hideyuki Kobayashi,Seisuke Kuji,Tomoharu Kurayama,Seiji Manabe,T. Miyaji,Kouichirou Nakashima,Toshihiro Omodaka,Tomoaki Oyama,Satoshi Sakai,Sei-ichiro Sakakibara,Katsuhisa Sato,Tetsuo Sasao,Katsunori M. Shibata,R. Shimizu,Hiroshi Suda,Yoichi Tamura,Hideki Ujihara,A. Yoshimura +27 more
TL;DR: The first dual-beam observations of a pair of H2O maser sources W49N and OH43.1 have been carried out on 2002 May 29 and July 23 as discussed by the authors.
Journal ArticleDOI
J-Net Galactic-Plane Survey of VLBI Radio Sources for VLBI Exploration of Radio Astrometry (VERA)
Mareki Honma,Tomoaki Oyama,Kazuya Hachisuka,Satoko Sawada-Satoh,Kouichi Sebata,Makoto Miyoshi,Osamu Kameya,Seiji Manabe,Noriyuki Kawaguchi,Tetsuo Sasao,Seiji Kameno,Kenta Fujisawa,Katsunori M. Shibata,Takeshi Bushimata,Takeshi Miyaji,Hideyuki Kobayashi,Makoto Inoue,Hiroshi Imai,Hiroshi Araki,Hideo Hanada,Kenzaburo Iwadate,Yoshihisa Kaneko,Seisuke Kuji,Katsuhisa Sato,Seiitsu Tsuruta,Satoshi Sakai,Yoshiaki Tamura,K. Horiai,Tadayoshi Hara,Koichi Yokoyama,Junichi Nakajima,Eiji Kawai,Hiroshi Okubo,Hiro Osaki,Yasuhiro Koyama,Mamoru Sekido,Tomonari Suzuyama,Ryuichi Ichikawa,Tetsuro Kondo,Kensei Sakai,Katsuhiro Wada,Naohiko Harada,Norihiro Tougou,Mitsumi Fujishita,Rie Shimizu,Satomi Kawaguchi,Akane Yoshimura,Masakazu Nakamura,Wataru Hasegawa,Satoshi Morisaki,Ryuichi Kamohara,Tomoe Funaki,Naoko Yamashita,Teruhiko Watanabe,Tomomi Shimoikura,Masanori Nishio,Toshihiro Omodaka,Atuya Okudaira +57 more
TL;DR: In this article, the Japanese VLBI Network (J-Net) was used to search for new VlBI sources in the Galactic plane that can be used as phase reference sources in differential VLI.
Journal ArticleDOI
Multi-Epoch VERA Observations of H2O Masers in OH 43.8−0.1
Mareki Honma,Takeshi Bushimata,Yoon Kyung Choi,Takahiro Fujii,Tomoya Hirota,K. Horiai,Hiroshi Imai,Noritomo Inomata,José K. Ishitsuka,Kenzaburo Iwadate,Takaaki Jike,Osamu Kameya,Ryuichi Kamohara,Yukitoshi Kan-ya,Noriyuki Kawaguchi,Masachika Kijima,Hideyuki Kobayashi,Seisuke Kuji,Tomoharu Kurayama,Seiji Manabe,Takeshi Miyaji,Akiharu Nakagawa,Kouichirou Nakashima,Chung Sik Oh,Toshihiro Omodaka,Tomoaki Oyama,Maria Rioja,Satoshi Sakai,Katsuhisa Sato,Tetsuo Sasao,Katsunori M. Shibata,R. Shimizu,Kasumi Sora,Hiroshi Suda,Yoshiaki Tamura,K. Yamashita +35 more
TL;DR: In this paper, multi-epoch observations of H2O maser emission in the star-forming region OH 43.8−0.1, carried out with VLBI Exploration of Radio Astrometry, reveal new maser spots scattered over the area of 0. 7 × 1.