Ryou Ohsawa

1.2k total citations
39 papers, 164 citations indexed

About

Ryou Ohsawa is a scholar working on Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics and Computational Mechanics. According to data from OpenAlex, Ryou Ohsawa has authored 39 papers receiving a total of 164 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Astronomy and Astrophysics, 8 papers in Atomic and Molecular Physics, and Optics and 8 papers in Computational Mechanics. Recurrent topics in Ryou Ohsawa's work include Stellar, planetary, and galactic studies (13 papers), Astrophysics and Star Formation Studies (12 papers) and Astronomical Observations and Instrumentation (8 papers). Ryou Ohsawa is often cited by papers focused on Stellar, planetary, and galactic studies (13 papers), Astrophysics and Star Formation Studies (12 papers) and Astronomical Observations and Instrumentation (8 papers). Ryou Ohsawa collaborates with scholars based in Japan, Germany and United States. Ryou Ohsawa's co-authors include Shigeyuki Sako, Itsuki Sakon, Takashi Onaka, M. Morii, Shiro Ikeda, Hidehiro Kaneda, Yoko Okada, Masahiro Tanaka, Ko Arimatsu and Fumihiko Usui and has published in prestigious journals such as The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society and The Astrophysical Journal Supplement Series.

In The Last Decade

Ryou Ohsawa

30 papers receiving 156 citations

Peers

Countries citing papers authored by Ryou Ohsawa

Since Specialization

Citations

This map shows the geographic impact of Ryou Ohsawa's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryou Ohsawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryou Ohsawa more than expected).

Fields of papers citing papers by Ryou Ohsawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryou Ohsawa. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryou Ohsawa. The network helps show where Ryou Ohsawa may publish in the future.

Co-authorship network of co-authors of Ryou Ohsawa

This figure shows the co-authorship network connecting the top 25 collaborators of Ryou Ohsawa. A scholar is included among the top collaborators of Ryou Ohsawa based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryou Ohsawa. Ryou Ohsawa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Second-timescale Glints from Satellites and Space Debris Detected with Tomo-e Gozen 2025 ·The Astrophysical Journal ·Masaomi Tanaka, Ichiro Takahashi, Naoki Yoshida, (unknown), (unknown), (unknown), Hirofumi Noda, Shigeyuki Sako, (unknown), Mitsuru Kokubo, Tomoki Morokuma, Yuu Niino, Nozomu Tominaga, Kenzo Kinugasa, Naoto Kobayashi, Sohei Kondo, Yuki Mori, Ryou Ohsawa, Hidenori Takahashi, (unknown)	0
2	Building the largest mock astrometric catalogue of the Milky Way centre in the near infrared for the end-to-end simulation of the JASMINE satellite 2024 ·(unknown), Daisuke Kawata, Ryou Ohsawa, Shogo Nishiyama, Jason L. Sanders, Leigh C. Smith, Naoki Koshimoto, D. Minniti, P. W. Lucas	1
3	A search for extragalactic fast optical transients in the Tomo-e Gozen high-cadence survey 2023 ·Monthly Notices of the Royal Astronomical Society ·(unknown), Masaomi Tanaka, Nozomu Tominaga, Tomoki Morokuma, Ichiro Takahashi, (unknown), (unknown), (unknown), Ko Arimatsu, Toshihiro Kasuga, Naoto Kobayashi, Sohei Kondo, Yuki Mori, Yuu Niino, Ryou Ohsawa, Shin-ichiro Okumura, Shigeyuki Sako, Hidenori Takahashi	2
4	Simultaneous multicolor photometry of the DESTINY+ target asteroid (3200) Phaethon 2023 ·Publications of the Astronomical Society of Japan ·(unknown), Tomohiko Sekiguchi, D. Kuroda, Tomoko Arai, Ko Ishibashi, Masateru Ishiguro, Fumi Yoshida, Hiroki Senshu, Takafumi Ootsubo, Shigeyuki Sako, Ryou Ohsawa, (unknown), (unknown), Yoonsoo P. Bach	5
5	Multicolor Photometry of Tiny Near-Earth Asteroid 2015 RN₃₅ across a Wide Range of Phase Angles: Possible Mission-accessible A-type Asteroid 2023 ·The Astronomical Journal ·(unknown), Ryou Ohsawa, Chrysa Avdellidou, Shigeyuki Sako, (unknown), Masateru Ishiguro, Tomohiko Sekiguchi, Fumihiko Usui, (unknown), (unknown), (unknown), Marin Ferrais, Emmanuël Jehin	2
6	Investigation of mid-infrared long-term variability of dusty AGB stars using multi-epoch scan data of AKARI and WISE 2023 ·Publications of the Astronomical Society of Japan ·(unknown), Takashi Miyata, (unknown), Ryou Ohsawa, (unknown), Akiharu Nakagawa, Yoshifusa Ita, Mizuho Uchiyama	1
7	Development of a flat calibration unit for accurate flat fielding in the mid-infrared region 2023 ·Journal of Astronomical Telescopes Instruments and Systems ·(unknown), (unknown), Takashi Miyata, Shigeyuki Sako, Ryou Ohsawa, (unknown), Atsushi Nishimura, Itsuki Sakon, (unknown), (unknown)	0
8	Dippers from TESS Full-frame Images. II. Spectroscopic Characterization of Four Young Dippers 2022 ·The Astrophysical Journal Supplement Series ·(unknown), Takayuki Kotani, Hajime Kawahara, (unknown), Takayuki Muto, (unknown), Michiko S. Fujii, Kohei Hattori, K. Masuda, Munetake Momose, Ryou Ohsawa, (unknown)	1
9	Deep-learning real/bogus classification for the Tomo-e Gozen transient survey 2022 ·Publications of the Astronomical Society of Japan ·Ichiro Takahashi, (unknown), Naonori Ueda, Masaomi Tanaka, Nozomu Tominaga, Shigeyuki Sako, Ryou Ohsawa, Naoki Yoshida	6
10	Detection of highly correlated optical and X-ray variations in SS Cygni with Tomo-e Gozen and NICER 2022 ·Publications of the Astronomical Society of Japan ·Yohei Nishino, M. Kimura, Shigeyuki Sako, (unknown), Teruaki Enoto, Takeo Minezaki, (unknown), Ryou Ohsawa, (unknown), S. Yamada, Keith C. Gendreau	3
11	Evidence for a rapid decrease of Pluto’s atmospheric pressure revealed by a stellar occultation in 2019 2020 ·Springer Link (Chiba Institute of Technology) ·Ko Arimatsu, George L. Hashimoto, Masato Kagitani, Takeshi Sakanoi, Yasumasa Kasaba, Ryou Ohsawa, Seitaro Urakawa	10
12	Dippers from the TESS Full-frame Images. I. Results of the First One Year Data and Discovery of a Runaway Dipper 2020 ·The Astrophysical Journal Supplement Series ·(unknown), Hajime Kawahara, (unknown), Michiko S. Fujii, Kohei Hattori, (unknown), Takayuki Kotani, K. Masuda, Munetake Momose, Takayuki Muto, Ryou Ohsawa, (unknown)	14
13	LIGO/Virgo S190425z: J-GEM optical follow-up observations with Subaru/FOCAS. 2019 ·GCN ·Mahito Sasada, Hiroshi Akitaya, Tatsuya Nakaoka, M. Yoshida, Masaomi Tanaka, Nozomu Tominaga, (unknown), (unknown), R. Itoh, Yuichiro Sekiguchi, Yousuke Utsumi, Tomoki Morokuma, Yuu Niino, Ryou Ohsawa, (unknown)	0
14	Detection of 10-msec scale optical flares in the black-hole binary candidate MAXI J1820+070 (ASASSN-18ey) 2018 ·The astronomer's telegram ·Shigeyuki Sako, Ryou Ohsawa, Masaaki Ichiki, (unknown), M. Morii, Masaomi Tanaka	0
15	Photometric error in mid-infrared observations at the TAO site caused by short-term variation of atmospheric water vapor 2018 ·Ground-based and Airborne Instrumentation for Astronomy VII ·Takashi Miyata, Ryou Ohsawa, (unknown), Shigeyuki Sako, (unknown), (unknown), (unknown), (unknown)	1
16	Performance of the reflective optics of MIMIZUKU at cryogenic temperature 2018 ·Ground-based and Airborne Instrumentation for Astronomy VII ·Tomohiro Mori, Takashi Miyata, (unknown), Ryou Ohsawa, Shigeyuki Sako, (unknown), (unknown), (unknown)	0
17	DATA COMPRESSION FOR THE TOMO-e GOZEN USING LOW-RANK MATRIX APPROXIMATION 2017 ·The Astrophysical Journal ·M. Morii, Shiro Ikeda, Shigeyuki Sako, Ryou Ohsawa	23
18	CONCURRENT FORMATION OF CARBON AND SILICATE DUST IN NOVA V1280 SCO 2016 ·The Astrophysical Journal ·Itsuki Sakon, Shigeyuki Sako, Takashi Onaka, Takaya Nozawa, Yuki Kimura, Takuya Fujiyoshi, Takashi Shimonishi, Fumihiko Usui, Hidenori Takahashi, Ryou Ohsawa, Akira Arai, Makoto Uemura, Takahiro Nagayama, Bon‐Chul Koo, Takashi Kozasa	18
19	SEARCH FOR THE INFRARED EMISSION FEATURES FROM DEUTERATED INTERSTELLAR POLYCYCLIC AROMATIC HYDROCARBONS 2013 ·The Astrophysical Journal ·Takashi Onaka, (unknown), Itsuki Sakon, Ryou Ohsawa, Hidehiro Kaneda, Yoko Okada, Masahiro Tanaka	21
20	UNUSUAL CARBONACEOUS DUST DISTRIBUTION IN PN G095.2+00.7 2012 ·The Astrophysical Journal Letters ·Ryou Ohsawa, Takashi Onaka, Itsuki Sakon, (unknown), Takashi Miyata, (unknown), M. Matsuura, Hidehiro Kaneda	7

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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