M. Ohyama

456 total citations
14 papers, 339 citations indexed

About

M. Ohyama is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Automotive Engineering. According to data from OpenAlex, M. Ohyama has authored 14 papers receiving a total of 339 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Astronomy and Astrophysics, 2 papers in Nuclear and High Energy Physics and 1 paper in Automotive Engineering. Recurrent topics in M. Ohyama's work include Solar and Space Plasma Dynamics (13 papers), Ionosphere and magnetosphere dynamics (9 papers) and Astro and Planetary Science (6 papers). M. Ohyama is often cited by papers focused on Solar and Space Plasma Dynamics (13 papers), Ionosphere and magnetosphere dynamics (9 papers) and Astro and Planetary Science (6 papers). M. Ohyama collaborates with scholars based in Japan, United States and Russia. M. Ohyama's co-authors include Kazunari Shibata, Takashi Watanabe, Shinichi Watari, Nicole Vilmer, K.‐L. Klein, M. R. Kundu, A. Nindos, M. Shimojo, T. Yokoyama and Masayoshi Kojima and has published in prestigious journals such as The Astrophysical Journal, Solar Physics and Advances in Space Research.

In The Last Decade

M. Ohyama

14 papers receiving 324 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
M. Ohyama Japan	9	334	78	35	14	9	14	339
K. Nagashima Germany	7	238 0.7×	49 0.6×	33 0.9×	26 1.9×	11 1.2×	24	243
C. Marqué France	8	313 0.9×	44 0.6×	12 0.3×	18 1.3×	9 1.0×	12	318
M. S. Nakwacki Argentina	7	452 1.4×	130 1.7×	23 0.7×	16 1.1×	4 0.4×	16	458
M. Tomczak Poland	9	334 1.0×	65 0.8×	16 0.5×	36 2.6×	11 1.2×	32	340
L. K. Kashapova Russia	10	293 0.9×	70 0.9×	23 0.7×	17 1.2×	7 0.8×	54	296
K.-L. Klein France	12	232 0.7×	53 0.7×	22 0.6×	13 0.9×	9 1.0×	19	237
F. Portier-Fozzani France	5	261 0.8×	81 1.0×	9 0.3×	25 1.8×	14 1.6×	6	264
И. Н. Шарыкин Russia	10	258 0.8×	74 0.9×	12 0.3×	17 1.2×	9 1.0×	27	262
T. Maeshiro Japan	7	363 1.1×	158 2.0×	24 0.7×	35 2.5×	8 0.9×	9	369

Countries citing papers authored by M. Ohyama

Since Specialization

Citations

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

Fields of papers citing papers by M. Ohyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of M. Ohyama

This figure shows the co-authorship network connecting the top 25 collaborators of M. Ohyama. A scholar is included among the top collaborators of M. Ohyama 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 M. Ohyama. M. Ohyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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14 of 14 papers shown

Ohyama, M.. (2021). Development and validation of astronomy-centred cross-disciplinary teaching materials for fostering thinking development. Impact. 2021(4). 10–12. 1 indexed citations

Kawate, Tomoko, et al.. (2012). HARD X-RAY AND MICROWAVE EMISSIONS FROM SOLAR FLARES WITH HARD SPECTRAL INDICES. The Astrophysical Journal. 747(2). 131–131. 11 indexed citations

Ohyama, M. & Kazunari Shibata. (2008). Hot and Cool Plasmoid Ejections Associated with a Solar Flare. Publications of the Astronomical Society of Japan. 60(1). 85–93. 8 indexed citations

Kundu, M. R., A. Nindos, Nicole Vilmer, et al.. (2001). Metric Radio Emission Associated with X‐Ray Plasmoid Ejections. The Astrophysical Journal. 559(1). 443–451. 24 indexed citations

Ohyama, M. & Kazunari Shibata. (2000). Timing and occurrence rate of X-ray plasma ejections. Journal of Atmospheric and Solar-Terrestrial Physics. 62(16). 1509–1514. 7 indexed citations

Ohyama, M. & Kazunari Shibata. (2000). X-ray plasma ejection and magnetic reconnection. Advances in Space Research. 26(3). 461–464. 2 indexed citations

Mouradian, Z., I. Soru-Escaut, E. Hiei, et al.. (1998). The Filament Disappearance of 7 May 1992 (the Ebi). Solar Physics. 180(1-2). 313–329. 8 indexed citations

Ohyama, M. & Kazunari Shibata. (1998). X‐Ray Plasma Ejection Associated with an Impulsive Flare on 1992 October 5: Physical Conditions of X‐Ray Plasma Ejection. The Astrophysical Journal. 499(2). 934–944. 140 indexed citations

Ohyama, M. & Kazunari Shibata. (1997). Preflare Heating and Mass Motion in a Solar Flare Associated with Hot Plasma Ejection: 1993 November 11 C9.7 Flare. Publications of the Astronomical Society of Japan. 49(2). 249–261. 94 indexed citations

10.

Ohyama, M., Kazunari Shibata, T. Yokoyama, & M. Shimojo. (1997). X-ray plasma ejections and jets from solar compact flares observed with the Yohkoh soft X-ray telescope. Advances in Space Research. 19(12). 1849–1852. 10 indexed citations

11.

Ohyama, M. & Kazunari Shibata. (1996). X-ray Plasma Ejection in an Eruptive Flare. 525. 1 indexed citations

12.

Watanabe, Takashi, Masayoshi Kojima, M. Ohyama, et al.. (1995). The Dynamical Characteristics of a Disappearing-Filament Associated Interplanetary Disturbance Observed in 1992 Early May. Publications of the Astronomical Society of Japan. 47(3). 377–381. 8 indexed citations

13.

Watari, Shinichi, et al.. (1995). Soft X-Ray Coronal Holes Observed by the Yohkoh SXT.. Journal of geomagnetism and geoelectricity. 47(11). 1063–1071. 10 indexed citations

14.

Watanabe, Takashi, M. Ohyama, Masayoshi Kojima, et al.. (1992). Coronal/Interplanetary Disturbances Associated with Disappearing Solar Filaments. Publications of the Astronomical Society of Japan. 44(5). L199–L204. 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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