Tomohiko Oka

1.2k total citations
7 papers, 27 citations indexed

About

Tomohiko Oka is a scholar working on Nuclear and High Energy Physics, Astronomy and Astrophysics and Condensed Matter Physics. According to data from OpenAlex, Tomohiko Oka has authored 7 papers receiving a total of 27 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Nuclear and High Energy Physics, 3 papers in Astronomy and Astrophysics and 1 paper in Condensed Matter Physics. Recurrent topics in Tomohiko Oka's work include Astrophysics and Cosmic Phenomena (4 papers), Dark Matter and Cosmic Phenomena (3 papers) and Gamma-ray bursts and supernovae (2 papers). Tomohiko Oka is often cited by papers focused on Astrophysics and Cosmic Phenomena (4 papers), Dark Matter and Cosmic Phenomena (3 papers) and Gamma-ray bursts and supernovae (2 papers). Tomohiko Oka collaborates with scholars based in Japan and United States. Tomohiko Oka's co-authors include Atsushi Hirano, Hitoshi Kawaji, Ryoji Kanno, Tooru Ataké, W. Ishizaki, Takeo Tojo, M. Mori, Takaaki Tanaka, H. Kubo and Mitsuru ENDO and has published in prestigious journals such as The Astrophysical Journal, Solid State Ionics and Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment.

In The Last Decade

Tomohiko Oka

4 papers receiving 25 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Tomohiko Oka Japan	3	17	8	7	6	4	7	27
M. Granoff United States	2	11 0.6×	4 0.5×	6 0.9×	6 1.0×	4 1.0×	5	26
P. Sinha United States	4	15 0.9×	14 1.8×	20 2.9×	8 1.3×		7	34
S. Biagi Italy	3	16 0.9×	13 1.6×	11 1.6×	4 0.7×		10	32
E. Lund Norway	3	7 0.4×	22 2.8×	10 1.4×	3 0.5×	2 0.5×	6	37
X. W. Xu China	3	5 0.3×	4 0.5×	6 0.9×	3 0.5×	2 0.5×	5	18
L. K. Ding China	4	9 0.5×	14 1.8×	15 2.1×	2 0.3×	3 0.8×	7	35
A. Nardulli Switzerland	2	17 1.0×	7 0.9×	9 1.3×		2 0.5×	7	19
A. Ahmed India	3	13 0.8×	13 1.6×	6 0.9×		6 1.5×	9	24
Antoine Charpentier United States	3	12 0.7×	8 1.0×		4 0.7×	3 0.8×	8	26
J. Betcher United States	3	5 0.3×	6 0.8×	6 0.9×	3 0.5×		5	16

Countries citing papers authored by Tomohiko Oka

Since Specialization

Citations

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

Fields of papers citing papers by Tomohiko Oka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Tomohiko Oka

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

All Works

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7 of 7 papers shown

1.

Oka, Tomohiko, et al.. (2025). Evidence for GeV Gamma-Ray Emission from Intense GRB 240529A During the Afterglow’s Shallow Decay Phase. The Astrophysical Journal. 986(2). 189–189. 1 indexed citations

2.

Oka, Tomohiko, W. Ishizaki, M. Mori, et al.. (2025). Resolving the Origin of the Unidentified TeV Source HESS J1626-490 as a Relic of the Ancient Cosmic-Ray Factory SNR G335.2+0.1. The Astrophysical Journal. 989(2). 137–137. 1 indexed citations

3.

Oka, Tomohiko, Mitsuru Abe, Kenji Hamaguchi, et al.. (2024). High-energy extension of the gamma-ray band observable with an electron-tracking Compton camera. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 1063. 169242–169242. 2 indexed citations

4.

Oka, Tomohiko & W. Ishizaki. (2023). Detection of delayed gamma-ray emissions around supernova remnant HB9 using Fermi- LAT observations. Proceedings Of Science. 830–830.

5.

Oka, Tomohiko & W. Ishizaki. (2022). Detection of gamma-rays around SNR HB9 and its implications for the diffusive shock-acceleration history. Publications of the Astronomical Society of Japan. 74(3). 625–638. 6 indexed citations

6.

Kawaji, Hitoshi, Tomohiko Oka, Takeo Tojo, et al.. (2002). Low-temperature heat capacity of layer structure lithium nickel oxide. Solid State Ionics. 152-153. 195–198. 17 indexed citations

7.

ENDO, Mitsuru & Tomohiko Oka. (1986). The effects of gapped supports on the random vibration of a beam.. TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 52(477). 1520–1525.

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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