K. Koyama
K. Koyama publishes mostly in Astronomy and Astrophysics, Nuclear and High Energy Physics and Computational Mechanics, on topics such as Cosmology and Gravitation Theories, Galaxies: Formation, Evolution, Phenomena and Astrophysical Phenomena and Observations.
- World rank
- #200,129 of 1,633,909 ranked researchers
- Rank in United Kingdom
- #18,506 of 90,785
- Works
- 210
- Citations
- 1.1k
- Citations per work
- 5.4
What does K. Koyama research?
Shares of their own output, by the field each of their topics belongs to. The grey slice is everything not listed.
- 1Astronomy and Astrophysics46% of their works
- 2Nuclear and High Energy Physics9% of their works
- 3Computational Mechanics6% of their works
- 4Instrumentation6% of their works
- 5Aerospace Engineering5% of their works
- 6Radiation3% of their works
Research topics
- Cosmology and Gravitation Theories
- Galaxies: Formation, Evolution, Phenomena
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Black Holes and Theoretical Physics
Which keywords describe K. Koyama's research?
The keywords of their largest research topics: Black Holes, Supernovae, Cosmological Parameters, Dark Energy, Cosmology, Galaxies, Accretion Disks and X-Ray Astronomy.
- Holographic
- Stellar Astrophysics
- Spectrograph
- Optical 3D Laser Measurement
- Neutron Stars
- X-Ray Astronomy
- Galaxies
- Dark Energy
- Supernovae
- Black Holes
- Cosmological Parameters
- Cosmology
- Accretion Disks
- Gamma-Ray Bursts
- Astronomical Instrumentation
- Position-Sensitive Detector
- Exoplanets
- Field Theories
Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.
All 18 words, with their numbers
- Black Holes493 topics
- Supernovae422 topics
- Cosmological Parameters261 topic
- Dark Energy261 topic
- Cosmology211 topic
- Galaxies211 topic
- Accretion Disks171 topic
- X-Ray Astronomy171 topic
- Gamma-Ray Bursts161 topic
- Neutron Stars161 topic
- Astronomical Instrumentation151 topic
- Optical 3D Laser Measurement151 topic
- Position-Sensitive Detector151 topic
- Spectrograph151 topic
- Exoplanets121 topic
- Stellar Astrophysics121 topic
- Field Theories111 topic
- Holographic111 topic
Where does K. Koyama work?
K. Koyama's main affiliation in the publication record is University of Portsmouth, United Kingdom.
How many publications and citations does K. Koyama have?
Science Explorer counts 210 works and 1,134 citations for K. Koyama, ranking #200,129 of 1,633,909 researchers worldwide on the composite score.
Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.
Other researchers named K. Koyama
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