K. Masai

1.6k total citations
60 papers, 699 citations indexed

About

K. Masai is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Radiation. According to data from OpenAlex, K. Masai has authored 60 papers receiving a total of 699 indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Astronomy and Astrophysics, 21 papers in Nuclear and High Energy Physics and 12 papers in Radiation. Recurrent topics in K. Masai's work include Astrophysical Phenomena and Observations (24 papers), Gamma-ray bursts and supernovae (18 papers) and Magnetic confinement fusion research (9 papers). K. Masai is often cited by papers focused on Astrophysical Phenomena and Observations (24 papers), Gamma-ray bursts and supernovae (18 papers) and Magnetic confinement fusion research (9 papers). K. Masai collaborates with scholars based in Japan, Czechia and United States. K. Masai's co-authors include Hiroshi Itoh, K. Nomoto, Hajime Inoue, Y. Ogawara, K. Koyama, M. Hirata, Naohiro Yamaguchi, K. Yatsu, K. Ogura and Eiji Takahashi and has published in prestigious journals such as Nature, Physical Review Letters and The Astrophysical Journal.

In The Last Decade

K. Masai

60 papers receiving 669 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. Masai Japan 17 481 352 95 87 86 60 699
D. P. Hutchinson United States 13 191 0.4× 363 1.0× 62 0.7× 153 1.8× 119 1.4× 58 563
Yoshitaka Ishisaki Japan 21 1.1k 2.3× 491 1.4× 66 0.7× 77 0.9× 54 0.6× 75 1.2k
D.L. Correll United States 12 208 0.4× 295 0.8× 42 0.4× 123 1.4× 126 1.5× 30 417
J. M. McChesney United States 14 258 0.5× 498 1.4× 55 0.6× 125 1.4× 72 0.8× 25 585
A. Toor United States 11 254 0.5× 173 0.5× 68 0.7× 95 1.1× 28 0.3× 28 394
J. H. Foote United States 14 130 0.3× 364 1.0× 61 0.6× 123 1.4× 104 1.2× 37 486
Steven E. Kissel United States 12 297 0.6× 292 0.8× 103 1.1× 77 0.9× 157 1.8× 34 543
J. C. Ingraham United States 15 344 0.7× 313 0.9× 14 0.1× 116 1.3× 150 1.7× 27 592
H.C. Howe United States 15 359 0.7× 363 1.0× 27 0.3× 122 1.4× 97 1.1× 31 662
W. Mandl United Kingdom 14 210 0.4× 499 1.4× 61 0.6× 210 2.4× 58 0.7× 21 591

Countries citing papers authored by K. Masai

Since Specialization
Citations

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

Fields of papers citing papers by K. Masai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

This figure shows the co-authorship network connecting the top 25 collaborators of K. Masai. A scholar is included among the top collaborators of K. Masai 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. Masai. K. Masai 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.
Masai, K. & Tetsu Kitayama. (2004). Quasi-hydrostatic intracluster gas under radiative cooling. Astronomy and Astrophysics. 421(3). 815–819. 2 indexed citations
2.
Masai, K., et al.. (2001). Properties of photoionized gas in accretion-powered sources. Astronomy and Astrophysics. 375(1). 328–337. 5 indexed citations
3.
Yonetoku, Daisuke, Toshio Murakami, K. Masai, et al.. (2001). Nonequilibrium Ionization States of Gamma-Ray Burst Environments. The Astrophysical Journal. 557(1). L23–L26. 3 indexed citations
4.
Dogiel, V. A., Atsushi Ichimura, Hajime Inoue, & K. Masai. (1998). On Search and Detection of Hard X-Ray Emission from Orion-Like Complexes Produced by a Flux of Subrelativistic Nuclei. Publications of the Astronomical Society of Japan. 50(6). 567–576. 10 indexed citations
5.
Safronova, M. S., A. S. Shlyaptseva, T. Kato, K. Masai, & L. A. Vaĭnshteĭn. (1995). Cross Sections and Rate Coefficients for Excitation of Δn = 0 Transitions in Be-Like Ions with 6 ≤ Z ≤ 54. Atomic Data and Nuclear Data Tables. 60(1). 1–36. 8 indexed citations
6.
Ishida, M., Kazuo Makishima, K. Mukai, & K. Masai. (1994). Detection of the iron Formula emission line and two-component X-ray emission from EX Hya. Monthly Notices of the Royal Astronomical Society. 266(2). 367–378. 6 indexed citations
7.
Hamada, Y., Y. Kawasumi, K. Masai, et al.. (1992). Shaped electrode system for high voltage parallel plate analyzer. Review of Scientific Instruments. 63(10). 4446–4449. 8 indexed citations
8.
Kato, T., K. Masai, Takashi Fujimoto, et al.. (1991). Effects of state-selective charge-exchange processes on the He-like spectra from the Alcator C tokamak. Physical Review A. 44(10). 6776–6784. 12 indexed citations
9.
Hirata, M., Eiji Takahashi, K. Masai, et al.. (1991). Temporal behaviour of the potential confined electrons in the central cell and in the plug region during a period with thermal barriers. Nuclear Fusion. 31(4). 752–756. 26 indexed citations
10.
Matsuoka, K., Masami Fujiwara, J. H. Harris, et al.. (1990). Review of CHS experiment. 93–96. 1 indexed citations
11.
Itoh, Hiroshi, K. Masai, & K. Nomoto. (1988). X-ray emission from the remnant of a carbon deflagration supernova - SN 1572 (Tycho). The Astrophysical Journal. 334. 279–279. 12 indexed citations
12.
Masai, K., S. Hayakawa, H. Inoue, Hiroshi Itoh, & K. Nomoto. (1988). Circumstellar matter of SN1987A and soft X-ray emission. Nature. 335(6193). 804–806. 9 indexed citations
13.
Nagase, F., et al.. (1986). Circumstellar Matter in the Vela X-1/HD 77581 System. Publications of the Astronomical Society of Japan. 38(4). 547–569. 5 indexed citations
14.
Hayakawa, Satio, F. Nagase, K. Masai, et al.. (1986). X-Ray Probing of the Circumstellar Matter in the Vela X-1 System from Observations over an Eclipse Phase. Publications of the Astronomical Society of Japan. 38(5). 731–750. 1 indexed citations
15.
Hirano, Tatsumi, S. Hayakawa, Hideyo Kunieda, et al.. (1985). Energy Spectra and Time Variations of the X-Ray Source Cygnus X-2. Publications of the Astronomical Society of Japan. 36(4). 769–784. 2 indexed citations
16.
Masai, K.. (1984). Structure of X-ray irradiated stellar wind. Astrophysics and Space Science. 106(2). 391–407. 8 indexed citations
17.
Masai, K.. (1984). X-ray emission spectra from ionizing plasmas. Astrophysics and Space Science. 98(2). 367–395. 60 indexed citations
18.
Katō, Takako, et al.. (1983). Effect of Metastable States on the Emission Lines of OIII, OIV and OV Ions. Journal of the Physical Society of Japan. 52(9). 3019–3028. 6 indexed citations
19.
Ohashi, T., H. Inoue, K. Koyama, et al.. (1982). Properties of X-ray bursts from MXB 1636-53. The Astrophysical Journal. 258. 254–254. 16 indexed citations
20.
Murakami, Toshio, Hajime Inoue, Katsuji Koyama, et al.. (1980). Two Successive X-Ray Bursts at Ten-Minute Interval from 1608—522. Publications of the Astronomical Society of Japan. 32(3). 543–546. 4 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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