2026 Steen Hannestad: Physics Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Physics	78	3187	3030	23	23	248	18624

Discipline name

D-Index

World Ranking

Current World Ranking

National Ranking

Current National Ranking

Publications

Citations

Physics

3187

3030

248

18624

Overview

Steen Hannestad is affiliated with Aarhus University in Denmark and has made contributions primarily in the field of Physics and Astronomy. Their research focuses significantly on subfields such as Nuclear and High Energy Physics, Astronomy and Astrophysics, Artificial Intelligence, Instrumentation, and Statistical and Nonlinear Physics.

The scientist's main areas of study encompass several core topics within physics, including Cosmology and Gravitation Theories, Astrophysics and Cosmic Phenomena, Particle Physics theoretical and experimental studies, Galaxies in terms of Formation, Evolution, and Phenomena, Neutrino Physics Research, Dark Matter and Cosmic Phenomena, as well as Computational Physics and Python Applications.

Steen Hannestad has authored and co-authored numerous scientific papers. Notable recent publications include:

Euclid preparation: IX. EuclidEmulator2 - power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations, 2021, Monthly Notices of the Royal Astronomical Society
Updated results on neutrino mass and mass hierarchy from cosmology with Planck 2018 likelihoods, 2020, Journal of Cosmology and Astroparticle Physics
Updated constraints on massive neutrino self-interactions from cosmology in light of the H₀ tension, 2021, Journal of Cosmology and Astroparticle Physics
Bayesian and frequentist investigation of prior effects in EFT of LSS analyses of full-shape BOSS and eBOSS data, 2023, Physical review. D/Physical review. D.
CONNECT: a neural network based framework for emulating cosmological observables and cosmological parameter inference, 2023, Journal of Cosmology and Astroparticle Physics

Frequent collaborators include:

Thomas Tram
Jeppe Dakin
Joachim Stadel
D. Potter
Aurel Schneider

Steen Hannestad's work has been published in various scientific venues. The most frequent publication platforms are:

Zenodo (CERN European Organization for Nuclear Research)
arXiv (Cornell University)
Journal of Cosmology and Astroparticle Physics
Monthly Notices of the Royal Astronomical Society
Physical review. D/Physical review. D.

Best Publications

Light Sterile Neutrinos: A White Paper

K. N. Abazajian;M. A. Acero;S. K. Agarwalla;A. A. Aguilar-Arevalo

814
Citations
What is the lowest possible reheating temperature

Steen Hannestad

691
Citations
A White Paper on keV sterile neutrino Dark Matter

R. Adhikari;M. Agostini;N. Anh Ky;N. Anh Ky;T. Araki

496
Citations
Updated bounds on milli-charged particles

Sacha Davidson;Steen Hannestad;Georg Raffelt

472
Citations
Neutrino masses and the number of neutrino species from WMAP and 2dFGRS

Steen Hannestad

376
Citations
Self-induced conversion in dense neutrino gases: Pendulum in flavor space

Steen Hannestad;Steen Hannestad;Georg G. Raffelt;Günter Sigl;Yvonne Y. Y. Wong

323
Citations
Probing cosmological parameters with the CMB: Forecasts from full Monte Carlo simulations

Laurence Perotto;Julien Lesgourgues;Steen Hannestad;Huitzu Tu

318
Citations
Cosmology seeking friendship with sterile neutrinos

J. Hamann;S. Hannestad;G.G. Raffelt;I. Tamborra;I. Tamborra

309
Citations
Probing cosmological parameters with the CMB: forecasts from Monte Carlo simulations

Laurence Perotto;Julien Lesgourgues;Steen Hannestad;Huitzu Tu

305
Citations
Cosmology favoring extra radiation and sub-eV mass sterile neutrinos as an option.

Jan Hamann;Steen Hannestad;Georg G. Raffelt;Irene Tamborra;Irene Tamborra

272
Citations
Probing the dark side: Constraints on the dark energy equation of state from CMB, large scale structure and Type Ia supernovae

Steen Hannestad;Edvard Mörtsell

269
Citations
SUPERNOVA NEUTRINO OPACITY FROM NUCLEON-NUCLEON BREMSSTRAHLUNG AND RELATED PROCESSES

Steen Hannestad;Steen Hannestad;Georg Raffelt

252
Citations
Sterile neutrinos with eV masses in cosmology — How disfavoured exactly?

Jan Hamann;Steen Hannestad;Georg G. Raffelt;Yvonne Y.Y. Wong

235
Citations
Neutrino decoupling in the early Universe.

Steen Hannestad;Jes Madsen

233
Citations
Cosmological and Astrophysical Neutrino Mass Measurements

K. N. Abazajian;E. Calabrese;A. Cooray;F. De Bernardis

228
Citations
The Effect of Thermal Neutrino Motion on the Non-linear Cosmological Matter Power Spectrum

Jacob Brandbyge;Steen Hannestad;Troels Haugboelle;Bjarne Thomsen

218
Citations
How Self-Interactions can Reconcile Sterile Neutrinos with Cosmology

Steen Hannestad;Rasmus Sloth Hansen;Thomas Tram

211
Citations
Neutrino masses and the dark energy equation of state: relaxing the cosmological neutrino mass bound.

Steen Hannestad

205
Citations
Supernova and neutron star limits on large extra dimensions reexamined

Steen Hannestad;Georg G. Raffelt

202
Citations
Neutrinos in cosmology

Steen Hannestad

73
Citations