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.
Electrostatic solitary waves (ESW) in the magnetotail: BEN wave forms observed by GEOTAIL
1994523 citationsHirotsugu Kojima, Yoshiharu Omura et al.profile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
hero ref
This map shows the geographic impact of I. Nagano'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 I. Nagano with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites I. Nagano more than expected).
This network shows the impact of papers produced by I. Nagano. 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 I. Nagano. The network helps show where I. Nagano may publish in the future.
Co-authorship network of co-authors of I. Nagano
This figure shows the co-authorship network connecting the top 25 collaborators of I. Nagano.
A scholar is included among the top collaborators of I. Nagano 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 I. Nagano. I. Nagano is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ishisaka, Keigo, et al.. (2006). Estimation of Electron Density Profile in the Lower Ionosphere at Winter Nighttime by Rocket Observations of LF and MF Radio Waves. 89(10). 2012–2021.1 indexed citations
Ozaki, Mitsunori, et al.. (2004). Ionospheric Penetration of ELF/VLF Electromagnetic Waves Radiated From an Earthquake. AGU Fall Meeting Abstracts. 2004.1 indexed citations
6.
Nagano, I.. (2003). Fullwave analysis of elves created by lightning-generated electromagnetic pulses. Solar-Terrestrial Physics. 65. 615–625.1 indexed citations
7.
Nagano, I., et al.. (2001). A Novel Loop Antenna for a Wristwatch Phone. IEICE Transactions on Communications. 84(5). 1423–1430.2 indexed citations
8.
Yoshimura, Y., I. Nagano, Satoshi Yagitani, & Takehisa Ueno. (2001). Shielding and Absorption by a Multilayered Material for Electromagnetic Waves with Oblique Incidence. 315.2 indexed citations
9.
Imachi, Tomohiko, I. Nagano, Satoshi Yagitani, Minoru Tsutsui, & H. Matsumoto. (2001). Effective Lengths of Dipole Antennas aboard GEOTAIL Spacecraft. 375.1 indexed citations
10.
Yamazaki, Yoshihiro, Kazunori Igarashi, Masaru Tomita, et al.. (2001). Heating Characteristics of Dextran Magnetite under a Strong AC Magnetic Field Created by a Portable Magnetic Generator. 412.5 indexed citations
Nagano, I., et al.. (2001). Lightning Location from a Single Station. 126.1 indexed citations
13.
Nagano, I., et al.. (1993). Full Wave Analysis of the Australian Omega Signal Observed by the Akebono Satellite (Special Issue on 1992 International Symposium on Antennas and Propagation). IEICE Transactions on Communications. 76(12). 1571–1578.5 indexed citations
14.
Tsutsui, Minoru, Hirotsugu Kojima, I. Nagano, et al.. (1992). Magnetic Radiations from Harness Wires of Spacecraft. IEICE Transactions on Communications. 75(3). 174–182.2 indexed citations
Okada, Toshimi, I. Nagano, K. Hashimoto, et al.. (1987). Design of a small loop antenna system for receiving waves in VLF and MF bands using a series-transformer network. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. 70(6). 550–561.4 indexed citations
17.
Nagano, I., et al.. (1987). Propagation characteristics in the earth-ionosphere waveguide for VLF waves emitted from trapping cones at high latitudes. Memoirs of National Institute of Polar Research. Special issue. 47(47). 183–191.6 indexed citations
18.
Nagano, I., et al.. (1986). Intensity and polarization characteristics along the earth's surface for the ELF-VLF waves emitted from a transmission cone in the high latitude. Memoirs of National Institute of Polar Research. Special issue. 42(42). 34–44.12 indexed citations
19.
Nagano, I., et al.. (1982). Full wave calculation for a Gaussian VLF wave injection into the ionospherer. Memoirs of National Institute of Polar Research. Special issue. 22. 46–57.14 indexed citations
20.
Nunn, D., et al.. (1970). The Numerical Simulation of VLF Chorus and Discrete Emissions Observed on the Geotail Satellite. ePrints Soton (University of Southampton).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.