Katsuji Koyama

262 papers and 6.3k indexed citations i.

About

Katsuji Koyama is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Radiation. According to data from OpenAlex, Katsuji Koyama has authored 262 papers receiving a total of 6.3k indexed citations (citations by other indexed papers that have themselves been cited), including 237 papers in Astronomy and Astrophysics, 131 papers in Nuclear and High Energy Physics and 28 papers in Radiation. Recurrent topics in Katsuji Koyama’s work include Astrophysical Phenomena and Observations (174 papers), Astrophysics and Cosmic Phenomena (119 papers) and Gamma-ray bursts and supernovae (81 papers). Katsuji Koyama is often cited by papers focused on Astrophysical Phenomena and Observations (174 papers), Astrophysics and Cosmic Phenomena (119 papers) and Gamma-ray bursts and supernovae (81 papers). Katsuji Koyama collaborates with scholars based in Japan, United States and Germany. Katsuji Koyama's co-authors include Shigeo Yamauchi, Takeshi Go Tsuru, Aya Bamba, Hironori Matsumoto and Masahiro Tsujimoto and has published in prestigious journals such as Nature, The Astrophysical Journal and The Astrophysical Journal Supplement Series.

In The Last Decade

Fields of papers citing papers by Katsuji Koyama

Since Specialization
EngineeringComputer SciencePhysics and AstronomyMathematicsEarth and Planetary SciencesEnergyEnvironmental ScienceMaterials ScienceChemical EngineeringChemistryAgricultural and Biological SciencesVeterinaryDecision SciencesArts and HumanitiesBusiness, Management and AccountingSocial SciencesPsychologyEconomics, Econometrics and FinanceHealth ProfessionsDentistryMedicineBiochemistry, Genetics and Molecular BiologyNeuroscienceNursingImmunology and MicrobiologyPharmacology, Toxicology and Pharmaceutics

This network shows the specialization of papers citing the papers produced by Katsuji Koyama. Nodes represent fields, and links connect fields that are likely to share authors. The network helps show where Katsuji Koyama may publish in the future.

Countries citing papers authored by Katsuji Koyama

Since Specialization
Citations

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

Rankless by CCL
2025