Hiroko Koyama
- Astronomy and Astrophysics top 5%
- Nuclear and High Energy Physics top 5%
- Molecular Biology
- Organic Chemistry
- Physiology
- Co-authors
- Akira TomimatsuMasaaki SuzukiMasaaki TakahashiSean A. HaywardTetsuro KonishiHisashi DoiTakamitsu HosoyaRyōji Noyori
- Topics
- Cosmology and Gravitation Theories (9 papers)Black Holes and Theoretical Physics (9 papers)Catalytic Cross-Coupling Reactions (4 papers)
- Partner nations
- JapanUnited StatesUnited Kingdom
In The Last Decade
Hiroko Koyama
56 papers receiving 835 citations
Peers
Comparison fields: 5 of 107
- Astronomy and Astrophysics 334
- Nuclear and High Energy Physics 285
- Molecular Biology 182
- Organic Chemistry 125
- Physiology 89
Countries citing papers authored by Hiroko Koyama
This map shows the geographic impact of Hiroko Koyama'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 Hiroko Koyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroko Koyama more than expected).
Fields of papers citing papers by Hiroko Koyama
This network shows the impact of papers produced by Hiroko Koyama. 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 Hiroko Koyama. The network helps show where Hiroko Koyama may publish in the future.
Co-authorship network of co-authors of Hiroko Koyama
This figure shows the co-authorship network connecting the top 25 collaborators of Hiroko Koyama. A scholar is included among the top collaborators of Hiroko Koyama 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 Hiroko Koyama. Hiroko Koyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 1 | |
| 2 | 4 | |
| 3 | 3 | |
| 4 | 5 | |
| 5 | 1 | |
| 6 | 5 | |
| 7 | 16 | |
| 8 | 5 | |
| 9 | 10 | |
| 10 | 8 | |
| 11 | 92 | |
| 12 | 12 | |
| 13 | 11 | |
| 14 | 27 | |
| 15 | 14 | |
| 16 | 23 | |
| 17 | 22 | |
| 18 | 1 | |
| 19 | 23 | |
| 20 | 14 |
About Hiroko Koyama
Hiroko Koyama is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Statistical and Nonlinear Physics, having authored 56 papers that have together received 870 indexed citations. Recurring topics across this work include Cosmology and Gravitation Theories (9 papers), Black Holes and Theoretical Physics (9 papers) and Catalytic Cross-Coupling Reactions (4 papers). The work is most often cited by research in Nuclear and High Energy Physics (285 citations), Astronomy and Astrophysics (334 citations) and Statistical and Nonlinear Physics (65 citations). Hiroko Koyama has collaborated with scholars based in Japan, United States and United Kingdom. Frequent co-authors include Akira Tomimatsu, Masaaki Suzuki, Masaaki Takahashi, Sean A. Hayward, Tetsuro Konishi, Hisashi Doi, Takamitsu Hosoya, Ryōji Noyori, Kengo Sumi and Y. Kuno. Their work appears in journals such as Nature Communications, Applied Physics Letters and PLoS ONE.
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.