Koichi Iwamoto

2.6k total citations · 1 hit paper
16 papers, 1.5k citations indexed

About

Koichi Iwamoto is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Surgery. According to data from OpenAlex, Koichi Iwamoto has authored 16 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Astronomy and Astrophysics, 5 papers in Nuclear and High Energy Physics and 1 paper in Surgery. Recurrent topics in Koichi Iwamoto's work include Gamma-ray bursts and supernovae (14 papers), Astro and Planetary Science (7 papers) and Pulsars and Gravitational Waves Research (6 papers). Koichi Iwamoto is often cited by papers focused on Gamma-ray bursts and supernovae (14 papers), Astro and Planetary Science (7 papers) and Pulsars and Gravitational Waves Research (6 papers). Koichi Iwamoto collaborates with scholars based in Japan, Italy and United States. Koichi Iwamoto's co-authors include K. Nomoto, Hideyuki Umeda, F. Brachwitz, F.‐K. Thielemann, W. R. Hix, P. A. Mazzali, Takayoshi Nakamura, O. S. Bartunov, Peter Lundqvist and С. И. Блинников and has published in prestigious journals such as Science, The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

Koichi Iwamoto

16 papers receiving 1.5k citations

Hit Papers

Nucleosynthesis in Chandrasekhar Mass Models for Type Ia ... 1999 2026 2008 2017 1999 250 500 750
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. Nucleosynthesis in Chandrasekhar Mass Models for Type Ia Supernovae and Constraints on Progenitor Systems and Burning‐Front Propagation
    1999 844 citations Koichi Iwamoto, F. Brachwitz et al. The Astrophysical Journal Supplement Series profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koichi Iwamoto Japan 10 1.4k 435 208 25 18 16 1.5k
F. Brachwitz Switzerland 6 1.1k 0.8× 313 0.7× 243 1.2× 29 1.2× 10 0.6× 8 1.2k
P. Jakobsson Denmark 24 1.9k 1.3× 338 0.8× 225 1.1× 24 1.0× 15 0.8× 136 1.9k
L. Piersanti Italy 15 959 0.7× 285 0.7× 208 1.0× 40 1.6× 10 0.6× 41 1.0k
James L. Higdon United States 18 1.3k 0.9× 246 0.6× 333 1.6× 21 0.8× 15 0.8× 42 1.3k
A. M. Soderberg United States 21 1.5k 1.1× 551 1.3× 86 0.4× 9 0.4× 9 0.5× 43 1.6k
S. Klose Germany 25 1.5k 1.1× 373 0.9× 114 0.5× 19 0.8× 31 1.7× 111 1.5k
Т. В. Мішеніна Ukraine 18 1.0k 0.7× 179 0.4× 387 1.9× 39 1.6× 35 1.9× 57 1.1k
W. P. S. Meikle United Kingdom 26 1.5k 1.1× 527 1.2× 114 0.5× 37 1.5× 15 0.8× 57 1.6k
Takaya Nozawa Japan 17 999 0.7× 207 0.5× 123 0.6× 23 0.9× 7 0.4× 58 1.0k
V. Piirola Finland 19 874 0.6× 210 0.5× 83 0.4× 31 1.2× 46 2.6× 100 929

Countries citing papers authored by Koichi Iwamoto

Since Specialization
Citations

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

Fields of papers citing papers by Koichi Iwamoto

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Iwamoto

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

All Works

16 of 16 papers shown
1.
Jerkstrand, Anders, Koichi Iwamoto, Izumi Hachisu, et al.. (2024). Nebular nitrogen line emission in stripped-envelope supernovae – a new progenitor mass diagnostic. Monthly Notices of the Royal Astronomical Society. 533(2). 1251–1280. 1 indexed citations
2.
Moriyama, Ryutaro, Koichi Iwamoto, Teruki Hagiwara, et al.. (2019). AMP-activated protein kinase activation reduces the transcriptional activity of the murine luteinizing hormone β-subunit gene. Journal of Reproduction and Development. 66(2). 97–104. 2 indexed citations
3.
Famiano, M., Toshitaka Kajino, Toshio Suzuki, et al.. (2017). Impact of New Gamow-Teller Strengths on Explosive Type Ia Supernova Nucleosynthesis. 1 indexed citations
4.
Famiano, M., Toshitaka Kajino, Toshio Suzuki, et al.. (2016). IMPACT OF NEW GAMOW–TELLER STRENGTHS ON EXPLOSIVE TYPE IA SUPERNOVA NUCLEOSYNTHESIS. The Astrophysical Journal. 833(2). 179–179. 18 indexed citations
5.
Maeda, Keiichi & Koichi Iwamoto. (2009). Observational characteristics and possible asphericity of overluminous Type Ia supernovae. Monthly Notices of the Royal Astronomical Society. 394(1). 239–249. 15 indexed citations
6.
Iwamoto, Koichi, et al.. (2007). Neutrino Emission from Type Ia Supernovae. Publications of the Astronomical Society of Japan. 59(6). L57–L61. 10 indexed citations
7.
Mazzali, P. A., K. Nomoto, E. Cappellaro, et al.. (2001). Can Differences in the Nickel Abundance in Chandrasekhar‐Mass Models Explain the Relation between the Brightness and Decline Rate of Normal Type Ia Supernovae?. The Astrophysical Journal. 547(2). 988–994. 64 indexed citations
8.
Nakamura, Takayoshi, P. A. Mazzali, K. Nomoto, & Koichi Iwamoto. (2001). Light Curve and Spectral Models for the Hypernova SN 1998bw Associated with GRB 980425. The Astrophysical Journal. 550(2). 991–999. 92 indexed citations
9.
Iwamoto, Koichi, Takayoshi Nakamura, K. Nomoto, et al.. (2000). The Peculiar Type Ic Supernova 1997ef: Another Hypernova. The Astrophysical Journal. 534(2). 660–669. 89 indexed citations
10.
Mazzali, P. A., Koichi Iwamoto, & K. Nomoto. (2000). A Spectroscopic Analysis of the Energetic Type Ic Hypernova SN 1997ef. The Astrophysical Journal. 545(1). 407–419. 83 indexed citations
11.
Блинников, С. И., Peter Lundqvist, O. S. Bartunov, K. Nomoto, & Koichi Iwamoto. (2000). Radiation Hydrodynamics of SN 1987A. I. Global Analysis of the Light Curve for the First 4 Months. The Astrophysical Journal. 532(2). 1132–1149. 160 indexed citations
12.
Iwamoto, Koichi, et al.. (1999). Nucleosynthesis in Chandrasekhar Mass Models for Type Ia Supernovae and Constraints on Progenitor Systems and Burning‐Front Propagation. The Astrophysical Journal Supplement Series. 125(2). 439–462. 844 indexed citations breakdown →
13.
Iwamoto, Koichi. (1999). On the Radio–to–X-Ray Light Curves of SN 1998[CLC]bw[/CLC] and GRB 980425. The Astrophysical Journal. 512(1). L47–L50. 8 indexed citations
14.
Nomoto, K., et al.. (1997). Type Ia Supernovae: Their Origin and Possible Applications in Cosmology. Science. 276(5317). 1378–1382. 114 indexed citations
15.
Nomoto, K., Koichi Iwamoto, Toshikazu Shigeyama, & H. Takabe. (1996). Instabilities of nuclear flames in thermonuclear supernovae. AIP conference proceedings. 369. 489–498. 1 indexed citations
16.
Iwamoto, Koichi, et al.. (1995). Mean molal activity coefficients of rare earth halides in aqueous solutions at 25.0 °C. Journal of Alloys and Compounds. 225(1-2). 271–273. 6 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by F. Brachwitz Breakdown of academic impact, for papers by P. Jakobsson Breakdown of academic impact, for papers by L. Piersanti Breakdown of academic impact, for papers by James L. Higdon Breakdown of academic impact, for papers by A. M. Soderberg Breakdown of academic impact, for papers by S. Klose Breakdown of academic impact, for papers by Т. В. Мішеніна Breakdown of academic impact, for papers by W. P. S. Meikle Breakdown of academic impact, for papers by Takaya Nozawa Breakdown of academic impact, for papers by V. Piirola
Rankless by CCL
2026