Ryoichi Nishi

26 papers and 923 indexed citations i.

About

Ryoichi Nishi is a scholar working on Astronomy and Astrophysics, Spectroscopy and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Ryoichi Nishi has authored 26 papers receiving a total of 923 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Astronomy and Astrophysics, 6 papers in Spectroscopy and 3 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Ryoichi Nishi’s work include Astrophysics and Star Formation Studies (21 papers), Stellar, planetary, and galactic studies (15 papers) and Galaxies: Formation, Evolution, Phenomena (8 papers). Ryoichi Nishi is often cited by papers focused on Astrophysics and Star Formation Studies (21 papers), Stellar, planetary, and galactic studies (15 papers) and Galaxies: Formation, Evolution, Phenomena (8 papers). Ryoichi Nishi collaborates with scholars based in Japan, France and United States. Ryoichi Nishi's co-authors include Kazuyuki Omukai, Toyoharu Umebayashi, Takenori Nakano, Hajime Susa, Masako Yamada, Hideyuki Kamaya, Fumitaka Nakamura, Norio Ikeda, Takashi Nakamura and Yoshimi Kitamura and has published in prestigious journals such as The Astrophysical Journal, Progress of Theoretical Physics and Publications of the Astronomical Society of Japan.

In The Last Decade

Co-authorship network of co-authors of Ryoichi Nishi i

Fields of papers citing papers by Ryoichi Nishi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryoichi Nishi. 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 Ryoichi Nishi. The network helps show where Ryoichi Nishi may publish in the future.

Countries citing papers authored by Ryoichi Nishi

Since Specialization
Citations

This map shows the geographic impact of Ryoichi Nishi'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 Ryoichi Nishi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryoichi Nishi more than expected).

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.

Explore authors with similar magnitude of impact

Rankless by CCL
2025