World's Best Scientists 2026 revealed!
Masayuki Akiyama

Masayuki Akiyama

D-Index & Metrics

Physics

D-Index
82
Citations
24883
World Ranking
2851
National Ranking
85

Masayuki Akiyama publication distribution in Physics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Physics in 2026. The highlighted bar marks where Masayuki Akiyama sits on this spectrum.

103–122 publications: 7 scientists 123–142 publications: 10 scientists 143–162 publications: 31 scientists 163–182 publications: 35 scientists 183–202 publications: 53 scientists 203–222 publications: 81 scientists 223–242 publications: 85 scientists 243–262 publications: 112 scientists 263–282 publications: 114 scientists 283–302 publications: 126 scientists 303–322 publications: 136 scientists 323–342 publications: 162 scientists 343–362 publications: 155 scientists 363–382 publications: 156 scientists 383–402 publications: 134 scientists 403–422 publications: 145 scientists 423–442 publications: 147 scientists 443–462 publications: 131 scientists 463–482 publications: 131 scientists 483–502 publications: 116 scientists 503–522 publications: 106 scientists 523–542 publications: 103 scientists 543–562 publications: 87 scientists 563–582 publications: 84 scientists 583–602 publications: 94 scientists 603–622 publications: 70 scientists 623–642 publications: 76 scientists 643–662 publications: 60 scientists 663–682 publications: 54 scientists 683–702 publications: 60 scientists 703–722 publications: 48 scientists 723–742 publications: 64 scientists 743–762 publications: 48 scientists 763–782 publications: 37 scientists 783–802 publications: 43 scientists 803–822 publications: 34 scientists 823–842 publications: 36 scientists 843–862 publications: 32 scientists 863–882 publications: 32 scientists 883–902 publications: 31 scientists 903–922 publications: 25 scientists 923–942 publications: 15 scientists 943–962 publications: 24 scientists 963–982 publications: 13 scientists 983–1,002 publications: 21 scientists 1,003–1,022 publications: 21 scientists 1,023–1,042 publications: 16 scientists 1,043–1,062 publications: 9 scientists 1,063–1,082 publications: 19 scientists 1,083–1,102 publications: 11 scientists 1,103–1,122 publications: 17 scientists 1,123–1,142 publications: 11 scientists 1,143–1,162 publications: 7 scientists 1,163–1,182 publications: 4 scientists 1,183–1,202 publications: 10 scientists 1,203–1,222 publications: 8 scientists 1,223–1,242 publications: 16 scientists 1,243–1,262 publications: 4 scientists 1,263–1,282 publications: 10 scientists 1,283–1,302 publications: 5 scientists 1,303–1,322 publications: 7 scientists 1,323–1,342 publications: 4 scientists 1,343–1,362 publications: 8 scientists 1,363–1,382 publications: 6 scientists 1,383–1,402 publications: 7 scientists 1,403–1,422 publications: 3 scientists 1,423–1,442 publications: 4 scientists 1,443–1,462 publications: 4 scientists 1,463–1,468 publications: 3 scientists 1,469+ publications: 100 scientists
103 publications 1,469+

This scientist: 360 publications — 30th percentile

30% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,469 publications or more.

Masayuki Akiyama D-index placement in Physics in 2026

The chart shows the D-index (discipline H-index) distribution of Physics scientists ranked by Research.com in 2026. The highlighted bar marks where Masayuki Akiyama sits on this spectrum.

70–71 D-Index: 76 scientists 72–73 D-Index: 110 scientists 74–75 D-Index: 143 scientists 76–77 D-Index: 153 scientists 78–79 D-Index: 144 scientists 80–81 D-Index: 167 scientists 82–83 D-Index: 167 scientists 84–85 D-Index: 166 scientists 86–87 D-Index: 132 scientists 88–89 D-Index: 155 scientists 90–91 D-Index: 134 scientists 92–93 D-Index: 137 scientists 94–95 D-Index: 102 scientists 96–97 D-Index: 112 scientists 98–99 D-Index: 110 scientists 100–101 D-Index: 116 scientists 102–103 D-Index: 97 scientists 104–105 D-Index: 103 scientists 106–107 D-Index: 87 scientists 108–109 D-Index: 90 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 78 scientists 114–115 D-Index: 75 scientists 116–117 D-Index: 67 scientists 118–119 D-Index: 69 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 59 scientists 124–125 D-Index: 53 scientists 126–127 D-Index: 42 scientists 128–129 D-Index: 41 scientists 130–131 D-Index: 33 scientists 132–133 D-Index: 32 scientists 134–135 D-Index: 45 scientists 136–137 D-Index: 19 scientists 138–139 D-Index: 24 scientists 140–141 D-Index: 28 scientists 142–143 D-Index: 31 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 20 scientists 148–149 D-Index: 12 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 24 scientists 154–155 D-Index: 23 scientists 156–157 D-Index: 15 scientists 158–159 D-Index: 15 scientists 160–161 D-Index: 11 scientists 162–163 D-Index: 17 scientists 164–165 D-Index: 12 scientists 166–167 D-Index: 11 scientists 168–169 D-Index: 9 scientists 170–171 D-Index: 9 scientists 172–173 D-Index: 11 scientists 174–175 D-Index: 4 scientists 176–177 D-Index: 8 scientists 178–179 D-Index: 5 scientists 180–181 D-Index: 3 scientists 182–183 D-Index: 4 scientists 184 D-Index: 4 scientists 185+ D-Index: 99 scientists
70 D-Index 185+

This scientist: 82 D-Index — 24th percentile

24% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 185 D-Index or more.

Overview

Masayuki Akiyama is affiliated with Tohoku University in Japan and specializes in research within the broad field of Physics and Astronomy. Their work predominantly focuses on Astronomy and Astrophysics, with significant contributions in related subfields such as Instrumentation, Nuclear and High Energy Physics, Electrical and Electronic Engineering, and Atomic and Molecular Physics and Optics.

Their main topics of study cover various aspects of galactic and cosmic phenomena, including:

  • Galaxies: Formation, Evolution, Phenomena
  • Astrophysical Phenomena and Observations
  • Astronomy and Astrophysical Research
  • Gamma-ray bursts and supernovae
  • Astrophysics and Cosmic Phenomena
  • Adaptive optics and wavefront sensing
  • Stellar, planetary, and galactic studies

Akiyama has published extensively, with a significant number of their works appearing in notable venues. Frequent publication venues include:

  • arXiv (Cornell University)
  • The Astrophysical Journal
  • Astronomy and Astrophysics
  • Monthly Notices of the Royal Astronomical Society
  • Adaptive Optics Systems VIII

Their recent papers reflect research progress in high-redshift quasars, galaxy formation, and observational astrophysics. Some recent publications are:

  • "Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVI. 69 New Quasars at 5.8 < z < 7.0," 2022, The Astrophysical Journal Supplement Series
  • "Quasar Luminosity Function at z = 7," 2023, The Astrophysical Journal Letters
  • "The eROSITA Final Equatorial-Depth Survey (eFEDS)," 2021, Astronomy and Astrophysics
  • "Dissecting Nearby Galaxies with piXedfit. I. Spatially Resolved Properties of Stars, Dust, and Gas as Revealed by Panchromatic SED Fitting," 2022, The Astrophysical Journal
  • "XXL-HSC: Link between AGN activity and star formation in the early Universe (z 3.5)," 2022, Astronomy and Astrophysics

Akiyama collaborates frequently with several co-authors across their publications. These frequent collaborators include:

  • Yoshiki Toba
  • Tohru Nagao
  • Yoshiki Matsuoka
  • Toshihiro Kawaguchi
  • Takuma Izumi

Best Publications

  • Cosmological evolution of the hard X-ray active galactic nucleus luminosity function and the origin of the hard X-ray background

    Yoshihiro Ueda;Masayuki Akiyama;Kouji Ohta;Takamitsu Miyaji

  • Cosmological Evolution of the Hard X-ray AGN Luminosity Function and the Origin of the Hard X-ray Background

    Yoshihiro Ueda;Masayuki Akiyama;Kouji Ohta;Takamitsu Miyaji

  • Statistics of 207 Lya Emitters at a Redshift Near 7: Constraints on Reionization and Galaxy Formation Models

    Masami Ouchi;Kazuhiro Shimasaku;Hisanori Furusawa;Tomoki Saito

  • The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lya Emitters from z=3.1 to 5.7 in the 1 deg^2 Field: Luminosity Functions and AGN

    Masami Ouchi;Kazuhiro Shimasaku;Masayuki Akiyama;Chris Simpson

  • STATISTICS OF 207 Lyα EMITTERS AT A REDSHIFT NEAR 7: CONSTRAINTS ON REIONIZATION AND GALAXY FORMATION MODELS*

    Masami Ouchi;Kazuhiro Shimasaku;Hisanori Furusawa;Tomoki Saito

  • TOWARD THE STANDARD POPULATION SYNTHESIS MODEL OF THE X-RAY BACKGROUND: EVOLUTION OF X-RAY LUMINOSITY AND ABSORPTION FUNCTIONS OF ACTIVE GALACTIC NUCLEI INCLUDING COMPTON-THICK POPULATIONS

    Yoshihiro Ueda;Masayuki Akiyama;Guenther Hasinger;Takamitsu Miyaji;Takamitsu Miyaji

  • The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lyα Emitters from z = 3.1 to 5.7 in the 1 deg2 Field: Luminosity Functions and AGN*

    Masami Ouchi;Kazuhiro Shimasaku;Masayuki Akiyama;Chris Simpson

  • The Subaru/XMM-Newton Deep Survey (SXDS). II. Optical Imaging and Photometric Catalogs*

    Hisanori Furusawa;George Kosugi;Masayuki Akiyama;Tadafumi Takata

  • The SUBARU Deep Field Project: Lymanα Emitters at a Redshift of 6.6

    Yoshiaki Taniguchi;Masaru Ajiki;Tohru Nagao;Tohru Nagao;Yasuhiro Shioya

  • The Discovery of Primeval Large-Scale Structures with Forming Clusters at Redshift 6

    M. Ouchi;K. Shimasaku;M. Akiyama;K. Sekiguchi

  • The Discovery of Primeval Large-Scale Structures with Forming Clusters at Redshift 6*

    Masami Ouchi;Kazuhiro Shimasaku;Masayuki Akiyama;Kazuhiro Sekiguchi

  • The Discovery of Two Lyman α Emitters beyond Redshift 6 in the Subaru Deep Field

    Keiichi Kodaira;Yoshiaki Taniguchi;Nobunari Kashikawa;Norio Kaifu

  • THE COSMIC BPT DIAGRAM: CONFRONTING THEORY WITH OBSERVATIONS

    Lisa J. Kewley;Lisa J. Kewley;Christian Maier;Kiyoto Yabe;Kouji Ohta

  • Radio imaging of the Subaru/XMM-Newton Deep Field - I. The 100-microJy catalogue, optical identifications, and the nature of the faint radio source population

    Chris Simpson;Alejo Martinez-Sansigre;Steve Rawlings;Rob Ivison

  • Discovery of a Giant Lya Emitter Near the Reionization Epoch

    Masami Ouchi;Yoshiaki Ono;Eiichi Egami;Tomoki Saito

  • Radio imaging of the Subaru/XMM-Newton Deep Field - I. The 100-μJy catalogue, optical identifications, and the nature of the faint radio source population

    Chris Simpson;Chris Simpson;Alejo Martínez-Sansigre;Steve Rawlings;Rob Ivison;Rob Ivison

  • The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at z ∼ 1.4

    Teppei Okumura;Chiaki Hikage;Tomonori Totani;Motonari Tonegawa

  • Great Optically Luminous Dropout Research Using Subaru HSC (GOLDRUSH). I. UV Luminosity Functions at $z \sim 4-7$ Derived with the Half-Million Dropouts on the 100 deg$^2$ Sky

    Yoshiaki Ono;Masami Ouchi;Yuichi Harikane;Jun Toshikawa

  • Down‐sizing in galaxy formation at z∼ 1 in the Subaru/XMM–Newton Deep Survey (SXDS)

    Tadayuki Kodama;Toru Yamada;Masayuki Akiyama;Kentaro Aoki

  • Cosmological Evolution of the Hard X-Ray AGN Luminosity Function

    Y. Ueda;M. Akiyama;K. Ohta;T. Miyaji

Frequent Co-Authors

Toru Yamada
Toru Yamada Japan Aerospace Exploration Agency
Tohru Nagao
Tohru Nagao Ehime University
Nobunari Kashikawa
Nobunari Kashikawa University of Tokyo
Masami Ouchi
Masami Ouchi University of Tokyo
Yoshihiro Ueda
Yoshihiro Ueda Kyoto University
Hisanori Furusawa
Hisanori Furusawa National Institutes of Natural Sciences
Satoshi Miyazaki
Satoshi Miyazaki The Graduate University for Advanced Studies, SOKENDAI
Kazuhiro Shimasaku
Kazuhiro Shimasaku University of Tokyo
Masatoshi Imanishi
Masatoshi Imanishi The Graduate University for Advanced Studies, SOKENDAI
Tadayuki Kodama
Tadayuki Kodama Tohoku University

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Best Scientists Citing Masayuki Akiyama

Trending Scientists

Recently Published Articles