深宇宙追跡技術グループ

研究キーワード

電波天文学 ,Radio Astronomy

研究分野

自然科学一般 / 天文学 /

経歴

1991年

-

1992年

学術振興会特別研究員

1991年

-

1992年

Researcher in Japan Society for the Promotion of Science

1992年

- 文部省宇宙科学研究所助手

1992年

- The Institute of Space and Astronautical Science

学歴

-

1991年

東京大学理学系研究科天文学

-

1991年

東京大学

-

1986年

東京大学理学部天文学

-

1986年

東京大学

論文

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Finding Transitions of Physical Condition in Jets from Observations over the Range of 10(3)-10(9) Schwarzschild Radii in Radio Galaxy NGC 4261

Satomi Nakahara Akihiro Doi Yasuhiro Murata Kazuhiro Hada Masanori Nakamura Keiichi Asada

ASTROPHYSICAL JOURNAL 854(2) 2018年2月

We report new measurements of jet width and radiation profiles along jets over the range of 10(3)-10(9) Schwarzschild radius (R-S) in the nearby radio galaxy NGC 4261 using multifrequency Very Long Baseline Array (VLBA) and Very Large Array images...

Fine Vertical Structures at the Cloud Heights of Venus Revealed by Radio Holographic Analysis of Venus Express and Akatsuki Radio Occultation Data

Takeshi Imamura Mayu Minamoto Hiroki Ando B Häusler, Martin Pätzold Silvia Tellmann Toshitaka Tsuda Yuichi Aoyama Yasuhiro Murata Hiroshi Takeuchi Atsushi Yamasaki Tomoaki Toda Atsushi Tomiki

J. Geophys. Res.: Planets 123(8) doi:10.1029/2018JE005627-2161 2018年 [査読有り]

Initial performance of the radio occultation experiment in the Venus orbiter mission Akatsuki

Takeshi Imamura Hiroki Ando Silvia Tellmann Martin PÃ¤tzold, Ber HÃ¤usler Atsushi Yamazaki Takao M. Sato Katsuyuki Noguchi Yoshifumi Futaana Janusz Oschlisniok Sanjay Limaye R. K. Choudhary Yasuhiro Murata Hiroshi Takeuchi Chikako Hirose Tsutomu Ichikawa Tomoaki Toda Atsushi Tomiki Takumi Abe Zen-ichi Yamamoto Hirotomo Noda Takahiro Iwata Shin-ya Murakami Takehiko Satoh Tetsuya Fukuhara Kazunori Ogohara Ko-ichiro Sugiyama Hiroki Kashimura Shoko Ohtsuki Seiko Takagi Yukio Yamamoto Naru Hirata George L. Hashimoto Manabu Yamada Makoto Suzuki Nobuaki Ishii Tomoko Hayashiyama Yeon Joo Lee Masato Nakamura

Earth, Planets and Space 69(1) 2017年10月 [査読有り]

Conical Stream of the Two-Sided Jets in NGC 4261 over the Range of 103-109 Schwarzschild Radii

Nakahara, Satomi Doi, Akihiro Murata, Yasuhiro Hada, Kazuhiro Nakamura, Masanori Asada, Keiichi

Galaxies 4(4) 80 2016年12月 [査読有り]

Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. II. Internal proper motion measurement in G006.79-00.25

Koichiro Sugiyama Kenta Fujisawa Kazuya Hachisuka Yoshinori Yonekura Kazuhito Motogi Satoko Sawada-Satoh Naoko Matsumoto Daiki Hirano Kyonosuke Hayashi Hideyuki Kobayashi Noriyuki Kawaguchi Katsunori M. Shibata Mareki Honma Tomoya Hirota Yasuhiro Murata Akihiro Doi Hideo Ogawa Kimihiro Kimura Kotaro Niinuma Xi Chen Bo Xia Bin Li Kazuo Sorai Munetake Momose Yu Saito Hiroshi Takaba Toshihiro Omodaka Kee-Tae Kim Zhiqiang Shen

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 68(5) 2016年10月

We detected internal proper motions of the methanol maser features at 6.7 GHz in a high-mass star-forming region G006.79-00.25 with the East-Asian VLBI Network. The spatial distribution of the maser features shows an elliptical morphology. The int...