2026 Keiichi Umetsu: Physics Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Physics	84	2704	2574	8	8	337	22435

Discipline name

D-Index

World Ranking

Current World Ranking

National Ranking

Current National Ranking

Publications

Citations

Physics

2704

2574

337

22435

Overview

Keiichi Umetsu is affiliated with the Institute of Astronomy and Astrophysics at Academia Sinica in Taiwan. Their research concentrates primarily on Physics and Astronomy, with a significant focus on Astronomy and Astrophysics.

They have contributed extensively to subfields including:

Astronomy and Astrophysics
Instrumentation
Nuclear and High Energy Physics
Statistical and Nonlinear Physics
Computational Mechanics

Keiichi Umetsu's work covers several main topics such as:

Galaxies: Formation, Evolution, Phenomena
Astronomy and Astrophysical Research
Stellar, planetary, and galactic studies
Astrophysical Phenomena and Observations
Gamma-ray bursts and supernovae
Astrophysics and Star Formation Studies
Astrophysics and Cosmic Phenomena

They have a substantial record of publications in leading journals and repositories. Frequent publication venues include:

arXiv (Cornell University)
The Astrophysical Journal
Astronomy and Astrophysics
Monthly Notices of the Royal Astronomical Society
The Astrophysical Journal Supplement Series

Recent papers authored or co-authored by Keiichi Umetsu include:

"RELICS: The Reionization Lensing Cluster Survey and the Brightest High-z Galaxies" (2020), The Astrophysical Journal
"The Cluster HEritage project with XMM-Newton: Mass Assembly and Thermodynamics at the Endpoint of structure formation" (2021), Astronomy and Astrophysics
"The eROSITA Final Equatorial-Depth Survey (eFEDS)" (2021), Astronomy and Astrophysics
"CLASH-VLT: Abell S1063" (2021), Astronomy and Astrophysics
Paper by Charles L. Steinhardt (2020), Portsmouth Research Portal (University of Portsmouth)

They have collaborated frequently with other researchers including:

Masamune Oguri
S. Ettori
D. Eckert
M. Sereno
I. Chiu

Best Publications

Cluster Lensing And Supernova survey with Hubble (CLASH): An Overview

Marc Postman;Dan Coe;Narciso Benitez;Larry Bradley

1175
Citations
The Hyper Suprime-Cam SSP Survey: Overview and Survey Design

H. Aihara;N. Arimoto;R. Armstrong;S. Arnouts

979
Citations
THE CLUSTER LENSING AND SUPERNOVA SURVEY WITH HUBBLE: AN OVERVIEW

Marc Postman;Dan Coe;Narciso Benítez;Larry Bradley

941
Citations
The Hyper Suprime-Cam SSP Survey: Overview and survey design

Hiroaki Aihara;Nobuo Arimoto;Nobuo Arimoto;Robert Armstrong;Stéphane Arnouts

563
Citations
First data release of the Hyper Suprime-Cam Subaru Strategic Program

Hiroaki Aihara;Robert Armstrong;Steven Bickerton;James Bosch

415
Citations
A magnified young galaxy from about 500 million years after the Big Bang

Wei Zheng;Marc Postman;Adi Zitrin;John Moustakas

371
Citations
The Surprisingly Steep Mass Profile of Abell 1689, from a Lensing Analysis of Subaru Images

Tom Broadhurst;Masahiro Takada;Keiichi Umetsu;Xu Kong

364
Citations
Evidence for Ubiquitous, High-EW Nebular Emission in z~7 Galaxies: Towards a Clean Measurement of the Specific Star Formation Rate using a Sample of Bright, Magnified Galaxies

R. Smit;R. J. Bouwens;I. Labbe;W. Zheng

347
Citations
LoCuSS: Subaru Weak Lensing Study of 30 Galaxy Clusters

Nobuhiro Okabe;Nobuhiro Okabe;Masahiro Takada;Keiichi Umetsu;Keiichi Umetsu;Toshifumi Futamase

345
Citations
CLASH: WEAK-LENSING SHEAR-AND-MAGNIFICATION ANALYSIS OF 20 GALAXY CLUSTERS*

Keiichi Umetsu;Elinor Medezinski;Mario Nonino;Julian Merten

329
Citations
Evidence for Ubiquitous High-equivalent-width Nebular Emission in z ~ 7 Galaxies: Toward a Clean Measurement of the Specific Star-formation Rate Using a Sample of Bright, Magnified Galaxies

R. Smit;R. J. Bouwens;I. Labbé;W. Zheng

319
Citations
A Census of Star-Forming Galaxies in the z~9-10 Universe based on HST+Spitzer Observations Over 19 CLASH clusters: Three Candidate z~9-10 Galaxies and Improved Constraints on the Star Formation Rate Density at z~9

R. Bouwens;L. Bradley;A. Zitrin;D. Coe

306
Citations
The Surprisingly Steep Mass Profile of A1689, from a Lensing Analysis of Subaru Images*

T. Broadhurst;M. Takada;K. Umetsu;X. Kong

280
Citations
CLASH-VLT: The mass, velocity-anisotropy, and pseudo-phase-space density profiles of the z=0.44 galaxy cluster MACS 1206.2-0847

A. Biviano;P. Rosati;I. Balestra;A. Mercurio

263
Citations
Comparison of Cluster Lensing Profiles with Lambda CDM Predictions

Tom Broadhurst;Keiichi Umetsu;Elinor Medezinski;Masamune Oguri

250
Citations
J-PAS: The Javalambre-Physics of the Accelerated Universe Astrophysical Survey

N. Benitez;R. Dupke;M. Moles;L. Sodre

250
Citations
Can the Steep Mass Profile of A1689 Be Explained by a Triaxial Dark Halo

Masamune Oguri;Masamune Oguri;Masahiro Takada;Keiichi Umetsu;Tom Broadhurst

243
Citations
The build-up of the colour–magnitude relation as a function of environment

Masayuki Tanaka;Tadayuki Kodama;Nobuo Arimoto;Sadanori Okamura

240
Citations
Suzaku Observation of Abell 1689: Anisotropic Temperature and Entropy Distributions Associated with the Large-Scale Structure

Madoka Kawaharada;Nobuhiro Okabe;Keiichi Umetsu;Motokazu Takizawa

234
Citations
CLASH: the enhanced lensing efficiency of the highly elongated merging cluster MACS J0416.1–2403

A. Zitrin;M. Meneghetti;K. Umetsu;T. Broadhurst;T. Broadhurst

219
Citations