Y
Yoshiaki Tamura
Researcher at Graduate University for Advanced Studies
Publications - 85
Citations - 3598
Yoshiaki Tamura is an academic researcher from Graduate University for Advanced Studies. The author has contributed to research in topics: Very-long-baseline interferometry & Astrometry. The author has an hindex of 28, co-authored 83 publications receiving 3449 citations.
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Journal ArticleDOI
Overview of Differential VLBI Observations of Lunar Orbiters in SELENE (Kaguya) for Precise Orbit Determination and Lunar Gravity Field Study
Hideo Hanada,Takahiro Iwata,Qinghui Liu,Fuyuhiko Kikuchi,Koji Matsumoto,Sander Goossens,Yuji Harada,Kazuyoshi Asari,Toshiaki Ishikawa,Yoshiaki Ishihara,Hirotomo Noda,Seiitsu Tsuruta,Natalia Petrova,Nobuyuki Kawano,Sho Sasaki,Kaori Sato,Noriyuki Namiki,Yusuke Kono,Kenzaburo Iwadate,Osamu Kameya,Katsunori M. Shibata,Yoshiaki Tamura,Shunichi Kamata,Yukihiro Yahagi,Wataru Masui,Koji Tanaka,Hironori Maejima,Xiaoyu Hong,Jinsong Ping,Xian Shi,Qian Huang,Yusufu Aili,Simon Ellingsen,Wolfgang Schlüter +33 more
TL;DR: The Japanese lunar explorer SELENE (Kaguya), which was launched on September 14th, 2007, was the target of VLBI observations over the period November 2007 to June 2009 as discussed by the authors.
Journal ArticleDOI
Performance of VERA in 10 micro-arcsecond astrometry
Takumi Nagayama,Hideyuki Kobayashi,Tomoya Hirota,Mareki Honma,Takaaki Jike,Mi Kyoung Kim,Akiharu Nakagawa,Toshihiro Omodaka,Tomoaki Oyama,Daisuke Sakai,Katsunori M. Shibata,Yoshiaki Tamura +11 more
TL;DR: In this paper, the authors evaluated the performance of the VLBI Exploration of Radio Astrometry (VERA) through the parallax measurements of five distant star-forming regions under good observing conditions of close separations and high elevations.
Journal ArticleDOI
Correction to “High-resolution analysis of the gravest seismic normal modes after the 2004 Mw= 9 Sumatra earthquake using superconducting gravimeter data”: CORRECTION
Séverine Rosat,Tadahiro Sato,Yuichi Imanishi,Jacques Hinderer,Yoshiaki Tamura,Herbert McQueen,M. Ohashi +6 more
Book ChapterDOI
Polar Motion Effect on Gravity Observed with a Superconducting Gravimeter at Syowa Station, Antarctica
Tadahiro Sato,Kazunari Nawa,Kazuo Shibuya,Yoshiaki Tamura,Masatsugu Ooe,Katsutada Kaminuma,Yuichi Aoyama +6 more
TL;DR: In this article, the amplitude factor (δ-factor) of 1.198±0.035 and a time lag about 20 days against to the gravity changes predicted from the IERS (International Earth Rotation Service) polar motion data were analyzed using the 2 years data obtained with a superconducting gravimeter at Syowa Station, Antarctica.
Journal ArticleDOI
Annual parallax measurement of the Mira variable star BX Camelopardalis with VERA
Masako Matsuno,Akiharu Nakagawa,Atsushi Morita,Tomoharu Kurayama,Toshihiro Omodaka,Takumi Nagayama,Mareki Honma,Katsunori M. Shibata,Yuji Ueno,Takaaki Jike,Yoshiaki Tamura +10 more
TL;DR: In this paper, the authors reported results of astrometric VLBI observations toward a Mira variable star BX~Cam using the VERA array from February 2012 to November 2014.