Prof. Hajime Kawahara Profile

Prof. Hajime Kawahara

at Institute of Space and Astronautical Science

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Author

Publications (6)

Proceedings Article | 27 August 2024 Poster + Paper

Performance report of a substrate-removed InGaAs sensor for the JASMINE mission

Kohei Miyakawa, Shotaro Tada, Hirokazu Kataza, Ryouhei Kano, Takehiko Wada, Masanobu Ozaki, Takayuki Kotani, Hajime Kawahara, Fumihiko Usui, Yui Kasagi

Proceedings Volume 13103, 131031G (2024) https://doi.org/10.1117/12.3018195

KEYWORDS: Dark current, Indium gallium arsenide, Sensors, Quantum efficiency, Quantum sensors, Image sensors, Fluorescence

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Proceedings Article | 23 August 2024 Poster + Paper

Structural, thermal, and optical stability of the JASMINE telescope system

Naoki Isobe, Shingo Kashima, Yoshinori Suematsu, Naoteru Gouda, Ryohei Kano, Hirokazu Kataza, Hajime Kawahara, Naoki Kohara, Iona Kondo, Ichiro Mase, Ryou Ohsawa, Toshihiro Tsuzuki, Fumihiko Usui, Shin Utsunomiya, Takehiko Wada, Yoshiyuki Yamada, Taihei Yano, Aoi Takahashi, Tomoya Hattori, Koichi Takeda, Yukina Arima

Proceedings Volume 13092, 1309236 (2024) https://doi.org/10.1117/12.3017299

KEYWORDS: Telescopes, Thermal deformation, Mirrors, Distortion, Astrometry, Thermal stability, Near infrared

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Proceedings Article | 23 August 2024 Presentation + Paper

Conceptual design of the satellite payload for the JASMINE mission

Hirokazu Kataza, Ryouhei Kano, Naoteru Gouda, Masayuki Hirabayashi, Naoki Isobe, Takafumi Kamizuka, Shingo Kashima, Hajime Kawahara, Daisuke Kawata, Naoki Kohara, Iona Kondo, Ichiro Mase, Kohei Miyakawa, Ryou Ohsawa, Masanobu Ozaki, Risa Shimizu, Yoshinori Suematsu, Shotaro Tada, Toshihiro Tsuzuki, Fumihiro Uraguchi, Fumihiko Usui, Shin Utsunomiya, Takehiko Wada, Yoshiyuki Yamada, Taihei Yano

Proceedings Volume 13092, 130920A (2024) https://doi.org/10.1117/12.3018609

KEYWORDS: Stars, Telescopes, Sensors, Point spread functions, Astrometry, Error analysis, Distortion, Satellites, Design, Exoplanets

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Proceedings Article | 23 August 2024 Presentation + Paper

Astronomical 6U CubeSat mission VERTECS: scientific objective and project status

Kei Sano, Takao Nakagawa, Shuji Matsuura, Koji Takimoto, Aoi Takahashi, Tetsuhito Fuse, Rodrigo Cordova, Victor Schulz, Pooja Lepcha, Necmi Cihan Örger, Daisuke Nakayama, Joseph Ofosu, Reynel Josue Galindo Rosales, Eyoas Areda, Pema Zangmo, Ezra Fielding, Keenan Chatar, Yukihisa Otani, Hisataka Kawasaki, Bastien Morelle, John Paul Almonte, Shunsuke Nakagawa, Yuto Tome, Shohei Karaki, Chinathip Narongphun, Hari Ram Shrestha, Marco Rosa, David Dai, Wenceslao Bejarano, Akihiro Ikeda, Rin Sato, Kentaro Hayashida, Hiroki Miyagawa, Masahiro Nishioka, Kana Kurosaki, Isami Kato, Satoshi Ikari, Kohji Tsumura, Ichiro Jikuya, Hideo Matsuhara, Umi Enokidani, Hayato Tanaka, Yuki Hirose, Akimasa Ojika, Akane Tsumoto, Taiko Iwaki, Yuki Ohara, Mengu Cho, Kentaro Kitamura, Hirokazu Masui, Mariko Teramoto, Takashi Yamauchi, Ryo Hashimoto, Emino Fukumoto, Zamba Leonel, Arisa Oho, Shoki Yabumoto, Hayato Masuno, Chisato Arakawa, Kouta Miyamoto, Takehiko Wada, Naoki Isobe, Yasuyuki Miyazaki, Ryu Funase, Hajime Kawahara, Keiichi Hirako, Yoichi Yatsu, Yoshihide Aoyanagi

Proceedings Volume 13092, 130920W (2024) https://doi.org/10.1117/12.3014708

KEYWORDS: Satellites, Visible radiation, Galactic astronomy, Stars, Astronomy, Point spread functions, X band, Telescopes, Data transmission

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Proceedings Article | 23 August 2024 Poster + Paper

JASMINE image simulator for high-precision astrometry and photometry

Takafumi Kamizuka, Hajime Kawahara, Ryou Ohsawa, Hirokazu Kataza, Daisuke Kawata, Yoshiyuki Yamada, Teruyuki Hirano, Kohei Miyakawa, Masataka Aizawa, Masashi Omiya, Taihei Yano, Ryouhei Kano, Takehiko Wada, Wolfgang Löffler, Michael Biermann, Pau Ramos, Naoki Isobe, Fumihiko Usui, Kohei Hattori, Satoshi Yoshioka, Takayuki Tatekawa, Hideyuki Izumiura, Akihiko Fukui, Makoto Miyoshi, Daisuke Tatsumi, Naoteru Gouda

Proceedings Volume 13099, 130992D (2024) https://doi.org/10.1117/12.3017770

KEYWORDS: Point spread functions, Astrometry, Telescopes, Stars, Device simulation, Sensors, Satellites, Photometry, Galactic astronomy, Distance measurement

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Proceedings Article | 29 July 2024 Poster + Paper

Six-year progress of the InfraRed Doppler (IRD) instrument for the Subaru Telescope

Masayuki Kuzuhara, Takayuki Kotani, Motohide Tamura, Teruyuki Hirano, Bun'ei Sato, Masashi Omiya, Wako Aoki, Akihiko Fukui, Norio Narita, Stevanus Nugroho, Masaomi Tanaka, Hajime Kawahara, Hiroki Harakawa, Yui Kasagi, Tomoyuki Kudo, Sébastien Vievard, Takashi Kurokawa, Takuma Serizawa, Takuya Takrada, Jun Nishikawa, Akitoshi Ueda, Nobuhiko Kusakabe

Proceedings Volume 13096, 130962B (2024) https://doi.org/10.1117/12.3018629

KEYWORDS: Planets, Stars, Astronomy, Atmospheres, Exoplanets, Telescopes, Equipment, Spectroscopy, Infrared telescopes, Astrophysics

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Showing 5 of 6 publications

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