Keizo Kai

540 total citations
27 papers, 382 citations indexed

About

Keizo Kai is a scholar working on Astronomy and Astrophysics, Molecular Biology and Oceanography. According to data from OpenAlex, Keizo Kai has authored 27 papers receiving a total of 382 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Astronomy and Astrophysics, 8 papers in Molecular Biology and 4 papers in Oceanography. Recurrent topics in Keizo Kai's work include Solar and Space Plasma Dynamics (19 papers), Ionosphere and magnetosphere dynamics (12 papers) and Geomagnetism and Paleomagnetism Studies (8 papers). Keizo Kai is often cited by papers focused on Solar and Space Plasma Dynamics (19 papers), Ionosphere and magnetosphere dynamics (12 papers) and Geomagnetism and Paleomagnetism Studies (8 papers). Keizo Kai collaborates with scholars based in Japan, Australia and United States. Keizo Kai's co-authors include T. Kosugi, T. Takakura, B. R. Dennis, Hiroshi Nakajima, Akio Takayanagi, M. Sawa, Y. Shiomi, Noriko Shibuya, Susumu Kawashima and N. Nitta and has published in prestigious journals such as The Astrophysical Journal, Solar Physics and Publications of the Astronomical Society of Japan.

In The Last Decade

Keizo Kai

27 papers receiving 349 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Keizo Kai Japan 11 365 85 62 56 24 27 382
C. Slottje Netherlands 9 343 0.9× 71 0.8× 84 1.4× 38 0.7× 8 0.3× 17 361
Y. Shiomi Japan 7 427 1.2× 117 1.4× 43 0.7× 24 0.4× 35 1.5× 18 442
I. P. Tindo Russia 8 253 0.7× 47 0.6× 54 0.9× 19 0.3× 24 1.0× 28 278
T. E. Gergely United States 14 401 1.1× 41 0.5× 43 0.7× 34 0.6× 12 0.5× 38 419
G. E. Moreton Australia 8 565 1.5× 126 1.5× 39 0.6× 39 0.7× 27 1.1× 11 589
Jr. Newkirk Gordon 3 430 1.2× 72 0.8× 36 0.6× 34 0.6× 17 0.7× 4 448
J. A. Vorpahl United States 10 293 0.8× 58 0.7× 63 1.0× 22 0.4× 10 0.4× 18 312
Mukul R. Kundu United States 11 341 0.9× 63 0.7× 36 0.6× 16 0.3× 24 1.0× 28 351
Katsuo Tanaka Japan 9 445 1.2× 125 1.5× 33 0.5× 20 0.4× 26 1.1× 20 481
N. R. Labrum Australia 8 274 0.8× 32 0.4× 34 0.5× 23 0.4× 14 0.6× 18 300

Countries citing papers authored by Keizo Kai

Since Specialization
Citations

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

Fields of papers citing papers by Keizo Kai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keizo Kai

This figure shows the co-authorship network connecting the top 25 collaborators of Keizo Kai. A scholar is included among the top collaborators of Keizo Kai 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 Keizo Kai. Keizo Kai 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.
Énomé, Shinzo, Hiroshi Nakajima, K. Shibasaki, et al.. (1993). Solar Activity Observed with the New Nobeyama Radioheliograph. International Astronomical Union Colloquium. 141. 310–320. 1 indexed citations
2.
Nitta, N., A. L. Kiplinger, & Keizo Kai. (1989). The spatial, spectral, and temporal character of the hard X-ray flare of 1982 February 3. The Astrophysical Journal. 337. 1003–1003. 2 indexed citations
3.
Kai, Keizo. (1987). Evidence for or against a common origin of hard X-rays and microwaves from solar flares. Solar Physics. 113(1-2). 165–173. 3 indexed citations
4.
Nakajima, Hiroshi, M. Sawa, Keizo Kai, et al.. (1985). The Radiometer and Polarimeters at 80, 35, and 17 GHz for Solar Observations at Nobeyama. Publications of the Astronomical Society of Japan. 37(1). 163–170. 56 indexed citations
5.
Nakajima, Hiroshi, T. Kosugi, Y. Shiomi, et al.. (1984). Improvement in the Angular Resolution of the 17-GHz Solar Radio Interferometer at Nobeyama. Publications of the Astronomical Society of Japan. 36(2). 383–386. 1 indexed citations
6.
Kai, Keizo, Hiroshi Nakajima, & T. Kosugi. (1983). Radio Observations of Small Activity Prior to Main Energy Release in Solar Flares. Publications of the Astronomical Society of Japan. 35(2). 285–297. 12 indexed citations
7.
Kai, Keizo, T. Kosugi, & Hiroshi Nakajima. (1982). Differences of observed characteristics between impulsive bursts and post-burst increases. Solar Physics. 75(1-2). 331–339. 7 indexed citations
8.
Kai, Keizo, M. Sawa, Y. Shiomi, et al.. (1980). Nobeyama Radiospectrographs for Solar Observations. Publications of the Astronomical Society of Japan. 32(2). 371–376. 7 indexed citations
9.
Nakajima, Hiroshi, Y. Shiomi, T. Kuwabara, et al.. (1980). A New 17-GHz Solar Radio Interferometer at Nobeyama. Publications of the Astronomical Society of Japan. 32(4). 639–650. 10 indexed citations
10.
Kai, Keizo. (1979). A statistical study of moving type IV bursts based on Culgoora radioheliograph observations. Solar Physics. 61(1). 187–199. 11 indexed citations
11.
12.
13.
Takakura, T., Yutaka Uchida, & Keizo Kai. (1968). Time variation of the spectrum of Gyro-synchrotron emission from the Sun. Solar Physics. 4(1). 45–57. 10 indexed citations
14.
Kai, Keizo. (1968). The Effect of Faraday Rotation on the Polarization of a Normal Zeeman Triplet. Publications of the Astronomical Society of Japan. 20(2). 154–161. 3 indexed citations
15.
Kai, Keizo. (1968). Evolutional Features of Solar Microwave Type IV Bursts. Publications of the Astronomical Society of Japan. 20(2). 140–148. 5 indexed citations
16.
Takakura, T. & Keizo Kai. (1966). Energy Distribution of Electrons Producing Microwave 1966 Impulsive Bursts and X-Ray Bursts from the Sun. Publications of the Astronomical Society of Japan. 18(2). 57–76. 72 indexed citations
17.
Kai, Keizo. (1965). Polarization Characteristics of Type IV Bursts I. Observational Results. Publications of the Astronomical Society of Japan. 17(3). 294–308. 10 indexed citations
18.
Kai, Keizo. (1965). Polarization Characteristics of Type IV Bursts II. Physical Interpretation. Publications of the Astronomical Society of Japan. 17(3). 309–336. 11 indexed citations
19.
Kai, Keizo. (1963). Linear Polarization of Solar Radio Emission of Spectral Type IV. Publications of the Astronomical Society of Japan. 15(2). 195–203. 4 indexed citations
20.
Kai, Keizo. (1962). Some Characteristics of Type I Burst. Publications of the Astronomical Society of Japan. 14(1). 1–11. 5 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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