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Masayuki Akiyama

Masayuki Akiyama

D-Index & Metrics

Physics

D-Index
82
Citations
24883
World Ranking
2851
National Ranking
84

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

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