K. Hayashi

2.3k total citations · 1 hit paper
91 papers, 1.9k citations indexed

About

K. Hayashi is a scholar working on Astronomy and Astrophysics, Molecular Biology and Geophysics. According to data from OpenAlex, K. Hayashi has authored 91 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 63 papers in Astronomy and Astrophysics, 40 papers in Molecular Biology and 40 papers in Geophysics. Recurrent topics in K. Hayashi's work include Ionosphere and magnetosphere dynamics (63 papers), Solar and Space Plasma Dynamics (46 papers) and Geomagnetism and Paleomagnetism Studies (40 papers). K. Hayashi is often cited by papers focused on Ionosphere and magnetosphere dynamics (63 papers), Solar and Space Plasma Dynamics (46 papers) and Geomagnetism and Paleomagnetism Studies (40 papers). K. Hayashi collaborates with scholars based in Japan, United States and Canada. K. Hayashi's co-authors include Susumu Kokubun, K. Shiokawa, Tatsundo Yamamoto, Hideaki Kawano, M. H. Acuña, T. Oguti, S. Kokubun, K. Tsuruda, O. Saka and T. Iyemori and has published in prestigious journals such as Nature, SHILAP Revista de lepidopterología and Journal of Geophysical Research Atmospheres.

In The Last Decade

K. Hayashi

85 papers receiving 1.5k citations

Hit Papers

The GEOTAIL Magnetic Field Experiment. 1994 2026 2004 2015 1994 200 400 600
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. The GEOTAIL Magnetic Field Experiment.
    1994 603 citations Susumu Kokubun, K. Hayashi et al. Journal of geomagnetism and geoelectricity profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
K. Hayashi Japan 21 1.7k 841 761 126 85 91 1.9k
J. A. Davies United Kingdom 22 1.4k 0.8× 426 0.5× 386 0.5× 284 2.3× 39 0.5× 77 1.5k
Е. Е. Антонова Russia 22 1.6k 0.9× 1.0k 1.2× 473 0.6× 24 0.2× 51 0.6× 173 1.9k
Xiaochen Shen United States 22 1.3k 0.8× 336 0.4× 593 0.8× 84 0.7× 67 0.8× 97 1.4k
K. Hashimoto Japan 20 1.0k 0.6× 273 0.3× 372 0.5× 195 1.5× 120 1.4× 81 1.2k
Chijie Xiao China 21 1.3k 0.8× 546 0.6× 205 0.3× 78 0.6× 374 4.4× 105 1.6k
Z. X. Liu China 19 997 0.6× 563 0.7× 145 0.2× 36 0.3× 112 1.3× 58 1.1k
Khan‐Hyuk Kim South Korea 22 1.1k 0.7× 511 0.6× 406 0.5× 111 0.9× 47 0.6× 106 1.3k
P. Robert France 12 1.7k 1.0× 812 1.0× 269 0.4× 31 0.2× 241 2.8× 26 1.8k
Chi‐Kuang Chao Taiwan 16 699 0.4× 162 0.2× 286 0.4× 310 2.5× 15 0.2× 70 838

Countries citing papers authored by K. Hayashi

Since Specialization
Citations

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

Fields of papers citing papers by K. Hayashi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

This figure shows the co-authorship network connecting the top 25 collaborators of K. Hayashi. A scholar is included among the top collaborators of K. Hayashi 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. Hayashi. K. Hayashi 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.
Ariyoshi, Seiichiro, et al.. (2023). Fabrication and Evaluation of YBa2Cu3O7-δ Probe for Scanning Probe Microscopy. IEEE Transactions on Applied Superconductivity. 33(5). 1–4.
2.
Hayashi, K., et al.. (2023). Flux Noise Reduction of HTS-SQUIDs via Introduction of Antidots. IEEE Transactions on Applied Superconductivity. 33(5). 1–4.
3.
Tanaka, Saburo, et al.. (2023). Design of a High-Tc SQUID Planer Gradiometer and Evaluation of Sensitivity Distribution. IEEE Transactions on Applied Superconductivity. 33(5). 1–4. 1 indexed citations
4.
Hayashi, K., et al.. (2022). Study of HTS Nanobridge Josephson Junctions Made by FIB. IEEE Transactions on Applied Superconductivity. 32(9). 1–6. 3 indexed citations
5.
Hayashi, K., et al.. (2021). Fabrication of HTS Low-Noise Nanobridge Josephson Junction by Gallium FIB. IEEE Transactions on Applied Superconductivity. 31(5). 1–4. 1 indexed citations
6.
Tanaka, Saburo, et al.. (2020). Measurement of Magnetic Particles by Hexagonal Pseudo Seven-Channel HTS SQUID Array. Journal of Physics Conference Series. 1559(1). 12010–12010. 4 indexed citations
7.
Yamada, Kenji, et al.. (2011). Verification of Real-Time Estimation and Control of Roll Force Distributionin a Commercial Scale Intelligent Mill for Flat Products. Journal of the Japan Society for Technology of Plasticity. 52(609). 1099–1103. 1 indexed citations
8.
Nagatsuma, Tsutomu, et al.. (1999). Real-time monitor of geomagnetic field in the near-pole regions as an index of magnetospheric electric field. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 13(13). 132–138. 3 indexed citations
9.
Fukui, Satoshi, Y. Kitoh, T. Numata, et al.. (1998). Transport current AC losses of high-Tc superconducting tapes exposed to AC magnetic field : Study on a new measurement method. 44. 723–730. 29 indexed citations
10.
MacDougall, J. W., G. Emlen Hall, & K. Hayashi. (1997). F region gravity waves in the central polar cap. Journal of Geophysical Research Atmospheres. 102(A7). 14513–14530. 32 indexed citations
11.
12.
Sato, Natsuo & K. Hayashi. (1985). Band‐limited ELF emission burst (auroral roar). Journal of Geophysical Research Atmospheres. 90(A4). 3531–3535. 15 indexed citations
13.
Oguti, T., S. Kokubun, K. Hayashi, et al.. (1981). Statistics of pulsating auroras on the basis of all-sky TV data from five stations. I. Occurrence frequency. Canadian Journal of Physics. 59(8). 1150–1157. 32 indexed citations
14.
Hayashi, K., K. Tsuruda, S. Kokubun, et al.. (1978). Arrival direction of VLF emissions and corresponding activities in aurora and geomagnetic pulsations.. Journal of geomagnetism and geoelectricity. 30(4). 361–362. 1 indexed citations
15.
Hayashi, K., et al.. (1978). Absolute sensitivity of a high-.MU. metal core solenoid as a magnetic sensor.. Journal of geomagnetism and geoelectricity. 30(6). 619–630. 4 indexed citations
16.
Tsuruda, K. & K. Hayashi. (1974). A New Method for Direction Finding of Elliptically Polarized VLF Waves. JAXA Repository (JAXA). 39(6). 123–141. 2 indexed citations
17.
Kokubun, S., T. Oguti, K. Hayashi, & Tetsuya Nagata. (1974). Auroral VLF Emissions in Antarctica. Memoirs of National Institute of Polar Research. Special issue. 3. 48–60. 1 indexed citations
18.
Sato, Natsuo, K. Hayashi, S. Kokubun, T. Oguti, & H. Fukunishi. (1974). Relationships between quasi-periodic VLF emission and geomagnetic pulsation. Journal of Atmospheric and Terrestrial Physics. 36(9). 1515–1526. 77 indexed citations
19.
Hayashi, K. & S. Kokubun. (1971). VLF EMISSIONS DURING POST BREAKUP PHASE OF POLAR SUBSTORM.. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 9 indexed citations
20.
Kokubun, Susumu, K. Hayashi, & T. Oguti. (1969). VLF Emission Study at Syowa Station,Antarctica -Polar Chorus Emission and Worldwide Geomagnetic Variation-. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 6(6). 1–34. 8 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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