2026 Sean G. Ryan: Physics Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Physics	75	3412	3243	300	289	225	17198

Discipline name

D-Index

World Ranking

Current World Ranking

National Ranking

Current National Ranking

Publications

Citations

Physics

3412

3243

300

289

225

17198

Sean G. Ryan 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 Sean G. Ryan sits on this spectrum.

103 publications 1,469+

This scientist: 225 publications — 6th percentile

6% of scientists in this discipline score the same or lower.

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

Sean G. Ryan 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 Sean G. Ryan sits on this spectrum.

70 D-Index 185+

This scientist: 75 D-Index — 9th percentile

9% of scientists in this discipline score the same or lower.

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

Overview

Sean G. Ryan is a researcher affiliated with the University of Hertfordshire in the United Kingdom. Their academic work spans the fields of Medicine and Biochemistry, Genetics and Molecular Biology, focusing on subfields such as Oncology, Pulmonary and Respiratory Medicine, Biophysics, Biomedical Engineering, and Cancer Research.

Their research topics include:

Breast Cancer Treatment Studies
Advanced Fluorescence Microscopy Techniques
Cell Image Analysis Techniques
Single-cell and Spatial Transcriptomics
Advanced Breast Cancer Therapies
Cancer Immunotherapy and Biomarkers
Radiomics and Machine Learning in Medical Imaging

Frequent coauthors of Sean G. Ryan include:

Filipa Lynce
Elizabeth Troll
Meredith M. Regan
Faina Nakhlis
Jennifer R. Bellon

Prominent venues where Sean G. Ryan has published are:

Cancer Research
arXiv (Cornell University)
Diagnostics
ACS Nano
Advanced Photonics Research

Notable recent papers authored or coauthored by Sean G. Ryan include:

"Artificial Intelligence, Augmented Reality, and Virtual Reality Advances and Applications in Interventional Radiology," 2023, Diagnostics
"Theranostic Near-Infrared-Active Conjugated Polymer Nanoparticles," 2021, ACS Nano
"Artificial Intelligence in Neuroradiology: A Review of Current Topics and Competition Challenges," 2023, Diagnostics
"Multifluorescence High-Resolution Episcopic Microscopy for 3D Imaging of Adult Murine Organs," 2021, Advanced Photonics Research
"A critique of the Spite Plateau and the astration of primordial lithium," 2023, Monthly Notices of the Royal Astronomical Society

Best Publications

The Gaia-ESO Public Spectroscopic Survey

G. Gilmore;S. Randich;M. Asplund;J. Binney

1052
Citations
Extremely Metal-Poor Stars. II. Elemental Abundances and the Early Chemical Enrichment of The Galaxy*

Sean G. Ryan;John E. Norris;Timothy C. Beers

802
Citations
Nucleosynthetic signatures of the first stars

Anna Frebel;Wako Aoki;Norbert Christlieb;Hiroyasu Ando

730
Citations
Carbon-enhanced Metal-poor Stars. I. Chemical Compositions of 26 Stars*

Wako Aoki;Timothy C. Beers;Norbert Christlieb;John E. Norris

720
Citations
Primordial Lithium and Big Bang Nucleosynthesis.

Sean G. Ryan;Timothy C. Beers;Keith A. Olive;Brian D. Fields

439
Citations
The Spite Lithium Plateau: Ultrathin but Postprimordial

Sean G. Ryan;John E. Norris;Timothy C. Beers

398
Citations
The Binary Frequency Among Carbon-enhanced, s-Process-rich, Metal-poor Stars

Sara Lucatello;Sara Lucatello;Stelios Tsangarides;Timothy C. Beers;Eugenio Carretta

363
Citations
The Spite Lithium Plateau: Ultra-Thin but Post-Primordial

Sean G. Ryan;John E. Norris;Timothy C. Beers

362
Citations
THE MOST METAL-POOR STARS. II. CHEMICAL ABUNDANCES OF 190 METAL-POOR STARS INCLUDING 10 NEW STARS WITH [Fe/H] ⩽ –3.5*, **, ** *

David Yong;John Norris;Michael Bessell;N Christlieb

352
Citations
EXTREMELY METAL-POOR STARS. VIII. HIGH-RESOLUTION, HIGH SIGNAL-TO-NOISE RATIO ANALYSIS OF FIVE STARS WITH (Fe/H) ( (3.5

John E. Norris;Sean G. Ryan;Timothy C. Beers

352
Citations
Extremely Metal-Poor Stars. VIII. High-Resolution, High-Signal-To-Noise Analysis of Five Stars with [Fe/H] < -3.5

John E. Norris;Sean G. Ryan;Timothy C. Beers

330
Citations
Neutron-Capture Elements in the Very Metal Poor Star HD 122563*

S. Honda;W. Aoki;Y. Ishimaru;S. Wanajo

318
Citations
HE1327-2326, an unevolved star with [Fe/H]<-5.0. I. A Comprehensive Abundance Analysis

W. Aoki;A. Frebel;N. Christlieb;J. E. Norris

317
Citations
A Subaru/High Dispersion Spectrograph Study of Lead (Pb) Abundances in Eight s-Process Element-rich, Metal-poor Stars

Wako Aoki;Sean G. Ryan;John E. Norris;Timothy C. Beers

292
Citations
Neutron-capture elements in the very metal-poor star HD122563

S. Honda;W. Aoki;Y. Ishimaru;S. Wanajo

291
Citations
A Subaru/HDS study of Lead (Pb) abundances in eight s-process-element-rich, metal-poor stars

W. Aoki;S.G. Ryan;J.E. Norris;T.C. Beers

282
Citations
Subdwarf studies. III, The halo metallicity distribution

Sean G. Ryan;John E. Norris

274
Citations
SPECTROSCOPIC STUDIES OF VERY METAL-POOR STARS WITH THE SUBARU HIGH DISPERSION SPECTROGRAPH. III. LIGHT NEUTRON-CAPTURE ELEMENTS

Wako Aoki;Satoshi Honda;Timothy C. Beers;Toshitaka Kajino

272
Citations
He 1327-2326, an unevolved star with [Fe/H] < -5.0. I. A comprehensive abundance analysis

Wako Aoki;Anna Frebel;Norbert Christlieb;John Norris

258
Citations
A Search for Stars of Very Low Metal Abundance. III. UBV Photometry of Metal-weak Candidates

John E. Norris;Sean G. Ryan;Timothy C. Beers

71
Citations