H. Okawa

17.4k total citations · 1 hit paper
45 papers, 2.0k citations indexed

About

H. Okawa is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Oceanography. According to data from OpenAlex, H. Okawa has authored 45 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Astronomy and Astrophysics, 27 papers in Nuclear and High Energy Physics and 6 papers in Oceanography. Recurrent topics in H. Okawa's work include Pulsars and Gravitational Waves Research (31 papers), Cosmology and Gravitation Theories (16 papers) and Black Holes and Theoretical Physics (16 papers). H. Okawa is often cited by papers focused on Pulsars and Gravitational Waves Research (31 papers), Cosmology and Gravitation Theories (16 papers) and Black Holes and Theoretical Physics (16 papers). H. Okawa collaborates with scholars based in Japan, Portugal and United States. H. Okawa's co-authors include Masaru Shibata, Koutarou Kyutoku, Keisuke Taniguchi, Vítor Cardoso, Kenta Hotokezaka, Kenta Kiuchi, Caio F. B. Macedo, Paolo Pani, Luís C. B. Crispino and Chul‐Moon Yoo and has published in prestigious journals such as Physical Review Letters, The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

H. Okawa

44 papers receiving 2.0k citations

Hit Papers

Mass ejection from the merger of binary neutron stars 2013 2026 2017 2021 2013 100 200 300
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. Mass ejection from the merger of binary neutron stars
    2013 333 citations Kenta Hotokezaka, Kenta Kiuchi et al. Physical review. D. Particles, fields, gravitation, and cosmology profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
H. Okawa Japan 21 1.8k 1.0k 128 121 98 45 2.0k
A. Gopakumar India 22 1.3k 0.7× 423 0.4× 173 1.4× 140 1.2× 66 0.7× 40 1.3k
Leo C. Stein United States 26 1.8k 1.0× 994 1.0× 131 1.0× 142 1.2× 71 0.7× 53 1.9k
Andrea Maselli Italy 32 2.7k 1.5× 1.4k 1.4× 173 1.4× 242 2.0× 174 1.8× 69 2.8k
Cecilia Chirenti Brazil 15 905 0.5× 410 0.4× 132 1.0× 93 0.8× 72 0.7× 37 943
Daniela D. Doneva Germany 28 2.7k 1.4× 1.6k 1.6× 126 1.0× 460 3.8× 97 1.0× 90 2.7k
Edgardo Franzin Italy 10 1.1k 0.6× 757 0.7× 51 0.4× 55 0.5× 85 0.9× 19 1.2k
M. Isi United States 20 1.4k 0.7× 609 0.6× 146 1.1× 131 1.1× 93 0.9× 47 1.5k
Bernard Kelly United States 21 1.7k 0.9× 634 0.6× 154 1.2× 92 0.8× 53 0.5× 41 1.7k
R. D. Ferdman United Kingdom 12 1.5k 0.8× 426 0.4× 284 2.2× 339 2.8× 166 1.7× 24 1.6k
Zu-Cheng Chen China 24 1.4k 0.8× 695 0.7× 37 0.3× 300 2.5× 72 0.7× 63 1.5k

Countries citing papers authored by H. Okawa

Since Specialization
Citations

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

Fields of papers citing papers by H. Okawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of H. Okawa

This figure shows the co-authorship network connecting the top 25 collaborators of H. Okawa. A scholar is included among the top collaborators of H. Okawa 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 H. Okawa. H. Okawa 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.
Yamada, Shoichi, Hiroki Nagakura, Akira Harada, et al.. (2024). Physical mechanism of core-collapse supernovae that neutrinos drive. Proceedings of the Japan Academy Series B. 100(3). 190–233. 12 indexed citations
2.
Maeda, Kei‐ichi, et al.. (2023). Dynamics of a binary system around a supermassive black hole. Physical review. D. 107(12). 9 indexed citations
3.
Harada, Akira, Hiroki Nagakura, Wakana Iwakami, et al.. (2023). Protoneutron Star Convection Simulated with a New General Relativistic Boltzmann Neutrino Radiation Hydrodynamics Code. The Astrophysical Journal. 944(1). 60–60. 18 indexed citations
4.
Maeda, Kei‐ichi, et al.. (2023). Chaotic von Zeipel-Lidov-Kozai oscillations of a binary system around a rotating supermassive black hole. Physical review. D. 108(12). 7 indexed citations
5.
Okawa, H., et al.. (2023). A Lagrangian construction of rotating star models. Monthly Notices of the Royal Astronomical Society. 521(2). 2561–2576. 1 indexed citations
6.
Yoo, Chul‐Moon, Tomohiro Harada, Shin‐ichi Hirano, H. Okawa, & Misao Sasaki. (2022). Primordial black hole formation from massless scalar isocurvature. Physical review. D. 105(10). 18 indexed citations
7.
Iwakami, Wakana, Akira Harada, Hiroki Nagakura, et al.. (2022). Principal-axis Analysis of the Eddington Tensor for the Early Post-bounce Phase of Rotational Core-collapse Supernovae. The Astrophysical Journal. 933(1). 91–91. 4 indexed citations
8.
Okawa, H., et al.. (2020). Gravitational waves from hierarchical triple systems with Kozai-Lidov oscillation. Physical review. D. 101(10). 29 indexed citations
9.
Nagakura, Hiroki, Wakana Iwakami, Shun Furusawa, et al.. (2018). Simulations of Core-collapse Supernovae in Spatial Axisymmetry with Full Boltzmann Neutrino Transport. Terrestrial Environment Research Center (University of Tsukuba). 68 indexed citations
10.
Maeda, Kei-ichi, et al.. (2018). Maximal efficiency of the collisional Penrose process with spinning particles. Physical review. D. 98(6). 18 indexed citations
11.
Aoki, Katsuki, et al.. (2018). Massive graviton geons. Physical review. D. 97(4). 12 indexed citations
12.
Brito, Richard, Vítor Cardoso, & H. Okawa. (2015). Accretion of Dark Matter by Stars. Physical Review Letters. 115(11). 111301–111301. 62 indexed citations
13.
Hotokezaka, Kenta, Koutarou Kyutoku, H. Okawa, & Masaru Shibata. (2015). Exploring tidal effects of coalescing binary neutron stars in numerical relativity. II. Long-term simulations. Physical review. D. Particles, fields, gravitation, and cosmology. 91(6). 52 indexed citations
14.
Okawa, H., et al.. (2014). An alternative numerical method for the stationary pulsar magnetosphere. Publications of the Astronomical Society of Japan. 66(1). 4 indexed citations
15.
Okawa, H. & Vítor Cardoso. (2014). Black holes and fundamental fields: Hair, kicks, and a gravitational Magnus effect. Physical review. D. Particles, fields, gravitation, and cosmology. 90(10). 4 indexed citations
16.
Okawa, H., Vítor Cardoso, & Paolo Pani. (2014). Study of the nonlinear instability of confined geometries. Physical review. D. Particles, fields, gravitation, and cosmology. 90(10). 24 indexed citations
17.
Yoo, Chul‐Moon, et al.. (2013). Black-Hole Universe: Time Evolution. Physical Review Letters. 111(16). 161102–161102. 34 indexed citations
18.
Hotokezaka, Kenta, Kenta Kiuchi, Koutarou Kyutoku, et al.. (2013). Mass ejection from the merger of binary neutron stars. Physical review. D. Particles, fields, gravitation, and cosmology. 87(2). 333 indexed citations breakdown →
19.
Kyutoku, Koutarou, H. Okawa, Masaru Shibata, & Keisuke Taniguchi. (2011). Gravitational waves from spinning black hole-neutron star binaries: dependence on black hole spins and on neutron star equations of state. Physical review. D. Particles, fields, gravitation, and cosmology. 84(6). 94 indexed citations
20.
Shibata, Masaru, H. Okawa, & Tetsuro Yamamoto. (2008). High-velocity collision of two black holes. Physical review. D. Particles, fields, gravitation, and cosmology. 78(10). 74 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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