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

Ryou Ohsawa
Mitsuyoshi Yamagishi Japan
G. Siringo Germany
B. Indermuehle Australia
Polychronis Patapis Switzerland
Lunming Yuen United States
J. Morrison United States
J. W. Kruk United States
F. L. Polles France
A. Matter France
Y. Clénet France
Mitsuyoshi Yamagishi Japan
Ryou Ohsawa
Citations per year, relative to Ryou Ohsawa Ryou Ohsawa (= 1×) peers Mitsuyoshi Yamagishi

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

20 of 20 papers shown
1.
Tanaka, Masaomi, Ichiro Takahashi, Naoki Yoshida, et al.. (2025). Second-timescale Glints from Satellites and Space Debris Detected with Tomo-e Gozen. The Astrophysical Journal. 994(2). 175–175.
2.
3.
Tanaka, Masaomi, Nozomu Tominaga, Tomoki Morokuma, et al.. (2023). A search for extragalactic fast optical transients in the Tomo-e Gozen high-cadence survey. Monthly Notices of the Royal Astronomical Society. 527(1). 334–345. 2 indexed citations
4.
Sekiguchi, Tomohiko, D. Kuroda, Tomoko Arai, et al.. (2023). Simultaneous multicolor photometry of the DESTINY+ target asteroid (3200) Phaethon. Publications of the Astronomical Society of Japan. 75(2). 297–310. 5 indexed citations
5.
Ohsawa, Ryou, Chrysa Avdellidou, Shigeyuki Sako, et al.. (2023). Multicolor Photometry of Tiny Near-Earth Asteroid 2015 RN35 across a Wide Range of Phase Angles: Possible Mission-accessible A-type Asteroid. The Astronomical Journal. 166(6). 229–229. 2 indexed citations
6.
Miyata, Takashi, et al.. (2023). Investigation of mid-infrared long-term variability of dusty AGB stars using multi-epoch scan data of AKARI and WISE. Publications of the Astronomical Society of Japan. 75(3). 489–498. 1 indexed citations
7.
Miyata, Takashi, et al.. (2023). Development of a flat calibration unit for accurate flat fielding in the mid-infrared region. Journal of Astronomical Telescopes Instruments and Systems. 9(3).
8.
Kotani, Takayuki, Hajime Kawahara, Takayuki Muto, et al.. (2022). Dippers from TESS Full-frame Images. II. Spectroscopic Characterization of Four Young Dippers. The Astrophysical Journal Supplement Series. 259(2). 40–40. 1 indexed citations
9.
Takahashi, Ichiro, Naonori Ueda, Masaomi Tanaka, et al.. (2022). Deep-learning real/bogus classification for the Tomo-e Gozen transient survey. Publications of the Astronomical Society of Japan. 74(4). 946–960. 6 indexed citations
10.
Nishino, Yohei, M. Kimura, Shigeyuki Sako, et al.. (2022). Detection of highly correlated optical and X-ray variations in SS Cygni with Tomo-e Gozen and NICER. Publications of the Astronomical Society of Japan. 74(3). L17–L22. 3 indexed citations
11.
Arimatsu, Ko, George L. Hashimoto, Masato Kagitani, et al.. (2020). Evidence for a rapid decrease of Pluto’s atmospheric pressure revealed by a stellar occultation in 2019. Springer Link (Chiba Institute of Technology). 10 indexed citations
12.
Kawahara, Hajime, Michiko S. Fujii, Kohei Hattori, et al.. (2020). Dippers from the TESS Full-frame Images. I. Results of the First One Year Data and Discovery of a Runaway Dipper. The Astrophysical Journal Supplement Series. 251(2). 18–18. 14 indexed citations
13.
Sasada, Mahito, Hiroshi Akitaya, Tatsuya Nakaoka, et al.. (2019). LIGO/Virgo S190425z: J-GEM optical follow-up observations with Subaru/FOCAS.. GCN. 24192. 1.
14.
Sako, Shigeyuki, et al.. (2018). Detection of 10-msec scale optical flares in the black-hole binary candidate MAXI J1820+070 (ASASSN-18ey). The astronomer's telegram. 11426. 1.
15.
Miyata, Takashi, et al.. (2018). Photometric error in mid-infrared observations at the TAO site caused by short-term variation of atmospheric water vapor. Ground-based and Airborne Instrumentation for Astronomy VII. 9145. 83–83. 1 indexed citations
16.
Mori, Tomohiro, et al.. (2018). Performance of the reflective optics of MIMIZUKU at cryogenic temperature. Ground-based and Airborne Instrumentation for Astronomy VII. 9908. 96–96.
17.
Morii, M., Shiro Ikeda, Shigeyuki Sako, & Ryou Ohsawa. (2017). DATA COMPRESSION FOR THE TOMO-e GOZEN USING LOW-RANK MATRIX APPROXIMATION. The Astrophysical Journal. 835(1). 1–1. 23 indexed citations
18.
Sakon, Itsuki, Shigeyuki Sako, Takashi Onaka, et al.. (2016). CONCURRENT FORMATION OF CARBON AND SILICATE DUST IN NOVA V1280 SCO. The Astrophysical Journal. 817(2). 145–145. 18 indexed citations
19.
Onaka, Takashi, Itsuki Sakon, Ryou Ohsawa, et al.. (2013). SEARCH FOR THE INFRARED EMISSION FEATURES FROM DEUTERATED INTERSTELLAR POLYCYCLIC AROMATIC HYDROCARBONS. The Astrophysical Journal. 780(2). 114–114. 21 indexed citations
20.
Ohsawa, Ryou, Takashi Onaka, Itsuki Sakon, et al.. (2012). UNUSUAL CARBONACEOUS DUST DISTRIBUTION IN PN G095.2+00.7. The Astrophysical Journal Letters. 760(2). L34–L34. 7 indexed citations

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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2026