K. Keika

3.8k total citations
88 papers, 1.8k citations indexed

About

K. Keika is a scholar working on Astronomy and Astrophysics, Geophysics and Molecular Biology. According to data from OpenAlex, K. Keika has authored 88 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 87 papers in Astronomy and Astrophysics, 41 papers in Geophysics and 27 papers in Molecular Biology. Recurrent topics in K. Keika's work include Ionosphere and magnetosphere dynamics (84 papers), Solar and Space Plasma Dynamics (75 papers) and Earthquake Detection and Analysis (40 papers). K. Keika is often cited by papers focused on Ionosphere and magnetosphere dynamics (84 papers), Solar and Space Plasma Dynamics (75 papers) and Earthquake Detection and Analysis (40 papers). K. Keika collaborates with scholars based in Japan, United States and France. K. Keika's co-authors include Yoshizumi Miyoshi, Kyungguk Min, Wen Li, Jeongwoo Lee, P. C. Brandt, M. Nosé, Kazue Takahashi, L. M. Kistler, A. Y. Ukhorskiy and Satoshi Kasahara and has published in prestigious journals such as Nature, Physical Review Letters and Nature Communications.

In The Last Decade

K. Keika

85 papers receiving 1.8k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
K. Keika Japan 23 1.7k 799 557 125 100 88 1.8k
M. Gkioulidou United States 26 2.1k 1.2× 798 1.0× 719 1.3× 109 0.9× 96 1.0× 85 2.1k
R. H. Friedel United States 20 1.9k 1.1× 804 1.0× 590 1.1× 78 0.6× 197 2.0× 49 2.0k
L. G. Ozeke Canada 26 2.0k 1.2× 992 1.2× 639 1.1× 85 0.7× 226 2.3× 62 2.0k
S. Zaharia United States 24 1.5k 0.9× 464 0.6× 695 1.2× 58 0.5× 100 1.0× 39 1.6k
Adam Kellerman United States 20 1.2k 0.7× 577 0.7× 273 0.5× 73 0.6× 166 1.7× 55 1.3k
Alexa Halford United States 21 1.1k 0.7× 631 0.8× 239 0.4× 127 1.0× 92 0.9× 75 1.2k
C. Forsyth United Kingdom 26 1.7k 1.0× 603 0.8× 863 1.5× 48 0.4× 111 1.1× 97 1.7k
S. A. Thaller United States 25 2.4k 1.4× 1.1k 1.4× 569 1.0× 194 1.6× 154 1.5× 73 2.4k
Michael D. Hartinger United States 25 2.1k 1.2× 979 1.2× 818 1.5× 133 1.1× 167 1.7× 112 2.2k
B. J. Jackel Canada 16 1.2k 0.7× 473 0.6× 503 0.9× 104 0.8× 130 1.3× 38 1.3k

Countries citing papers authored by K. Keika

Since Specialization
Citations

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

Fields of papers citing papers by K. Keika

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K. Keika

This figure shows the co-authorship network connecting the top 25 collaborators of K. Keika. A scholar is included among the top collaborators of K. Keika 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 K. Keika. K. Keika 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.
Kurita, Satoshi, Y. Miyoshi, Shinji Saito, et al.. (2025). Detection of ultrafast electron energization by whistler-mode chorus waves in the magnetosphere of Earth. Scientific Reports. 15(1). 992–992. 2 indexed citations
2.
Miyashita, Yukinaga, J.‐P. St.‐Maurice, G. C. Hussey, et al.. (2025). Characteristic E-Region Plasma Signature of Magnetospheric Wave-Particle Interactions. Physical Review Letters. 134(14). 145201–145201. 3 indexed citations
3.
Kurita, Satoshi, Yoshizumi Miyoshi, Satoshi Kasahara, et al.. (2025). Direct Evidence for Electron Pitch Angle Scattering Driven by Electrostatic Cyclotron Harmonic Waves. Geophysical Research Letters. 52(5). 2 indexed citations
4.
Kim, Khan‐Hyuk, Chae‐Woo Jun, K. Shiokawa, et al.. (2024). Observation and Numerical Simulation of Cold Ions Energized by EMIC Waves. Journal of Geophysical Research Space Physics. 129(5). 4 indexed citations
5.
Zhang, Xiao‐Jia, Anton Artemyev, D. Mourenas, et al.. (2024). ELFIN‐GPS Comparison of Energetic Electron Fluxes: Modeling Low‐Altitude Electron Flux Mapping to the Equatorial Magnetosphere. Journal of Geophysical Research Space Physics. 129(11). 1 indexed citations
6.
Hosokawa, Keisuke, Yasunobu Ogawa, Yoshizumi Miyoshi, et al.. (2024). On the Factors Controlling the Relationship Between Type of Pulsating Aurora and Energy of Pulsating Auroral Electrons: Simultaneous Observations by Arase Satellite, Ground‐Based All‐Sky Imagers and EISCAT Radar. Journal of Geophysical Research Space Physics. 129(7). 2 indexed citations
7.
Belakhovsky, V. B., Vyacheslav Pilipenko, Е. Е. Антонова, et al.. (2023). Relativistic electron flux growth during storm and non-storm periods as observed by ARASE and GOES satellites. Earth Planets and Space. 75(1). 2 indexed citations
8.
Gkioulidou, M., D. G. Mitchell, J. W. Manweiler, et al.. (2023). Radiation Belt Storm Probes Ion Composition Experiment (RBSPICE) Revisited: In-Flight Calibrations, Lessons Learned and Scientific Advances. Space Science Reviews. 219(8). 80–80. 2 indexed citations
9.
Kistler, L. M., Kazushi Asamura, Satoshi Kasahara, et al.. (2023). The variable source of the plasma sheet during a geomagnetic storm. Nature Communications. 14(1). 6143–6143. 5 indexed citations
10.
Imajo, Shun, Yoshizumi Miyoshi, Kazushi Asamura, et al.. (2022). Signatures of Auroral Potential Structure Extending Through the Near‐Equatorial Inner Magnetosphere. Geophysical Research Letters. 49(10). 2 indexed citations
11.
Keika, K., Satoshi Kasahara, Shoichiro Yokota, et al.. (2022). Preferential Energization of Lower‐Charge‐State Heavier Ions in the Near‐Earth Magnetotail. Journal of Geophysical Research Space Physics. 127(1). 4 indexed citations
12.
Zhang, Xiao‐Jia, Anton Artemyev, V. Angelopoulos, et al.. (2022). Superfast precipitation of energetic electrons in the radiation belts of the Earth. Nature Communications. 13(1). 1611–1611. 50 indexed citations
13.
Yokota, Shoichiro, Naoki Terada, Ayako Matsuoka, et al.. (2021). In situ observations of ions and magnetic field around Phobos: the mass spectrum analyzer (MSA) for the Martian Moons eXploration (MMX) mission. Earth Planets and Space. 73(1). 13 indexed citations
14.
Kasahara, Satoshi, Kazushi Asamura, Reiko Nomura, et al.. (2021). Energy‐Resolved Detection of Precipitating Electrons of 30–100 keV by a Sounding Rocket Associated With Dayside Chorus Waves. Journal of Geophysical Research Space Physics. 126(3). 1 indexed citations
15.
Shprits, Yuri, Hayley Allison, Ruggero Vasile, et al.. (2021). Preliminary Statistical Comparisons of Spin‐Averaged Electron Data From Arase and Van Allen Probes Instruments. Journal of Geophysical Research Space Physics. 126(7). 8 indexed citations
16.
Miyoshi, Yoshizumi, Takefumi Mitani, Tomoaki Hori, et al.. (2021). Characterization and Calibration of High‐Energy Electron Instruments Onboard the Arase Satellite. Journal of Geophysical Research Space Physics. 126(7). 5 indexed citations
17.
Miyoshi, Yoshizumi, V. K. Jordanova, M. Engel, et al.. (2021). Contribution of Electron Pressure to Ring Current and Ground Magnetic Depression Using RAM‐SCB Simulations and Arase Observations During 7–8 November 2017 Magnetic Storm. Journal of Geophysical Research Space Physics. 126(6). 3 indexed citations
18.
Kitamura, Naritoshi, K. Seki, K. Keika, et al.. (2021). On the relationship between energy input to the ionosphere and the ion outflow flux under different solar zenith angles. Earth Planets and Space. 73(1). 202–202. 7 indexed citations
19.
Kistler, L. M., C. Mouikis, Kazushi Asamura, et al.. (2019). Cusp and Nightside Auroral Sources of O+ in the Plasma Sheet. Journal of Geophysical Research Space Physics. 124(12). 10036–10047. 12 indexed citations
20.
Seki, K., K. Keika, Satoshi Kasahara, et al.. (2019). Statistical Properties of Molecular Ions in the Ring Current Observed by the Arase (ERG) Satellite. Geophysical Research Letters. 46(15). 8643–8651. 15 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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