John Helly

Durham University — United Kingdom

Physics and Astronomy · Physical Sciences

44h-index19.1kcitations128works7.92yr avg
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Research Topics

Galaxies: Formation, Evolution, Phenomena(97), Astronomy and Astrophysical Research(76), Cosmology and Gravitation Theories(40), Stellar, planetary, and galactic studies(21), Astrophysics and Star Formation Studies(14)

Publications128 total

Ripples in the baryon to dark matter ratio in $Λ$CDM: implications for galaxy formation
arXiv (Cornell University)·2025Open Access
The resummation model in FLAMINGO: precisely predicting matter power suppression from observed halo baryon fractions
Monthly Notices of the Royal Astronomical Society·2025Open Access
FLAMINGO: Tracing the co-evolution of hot gas and black holes in galaxy groups and clusters
ArXiv.org·2025· 1 citedOpen Access
Assessing subhalo finders in cosmological hydrodynamical simulations
Monthly Notices of the Royal Astronomical Society·2025· 12 citedOpen Access
The COLIBRE project: cosmological hydrodynamical simulations of galaxy formation and evolution
ArXiv.org·2025· 4 citedOpen Access
Cosmological feedback from a halo assembly perspective
Physical review. D/Physical review. D.·2025· 5 citedOpen Access
SOAP: A Python Package for Calculating the Properties of Galaxies and Halos Formed in Cosmological Simulations
The Journal of Open Source Software·2025· 9 citedOpen Access
Constraints on the properties of νMSM dark matter using the satellite galaxies of the Milky Way
Monthly Notices of the Royal Astronomical Society·2025Open Access
Galaxy assembly and evolution in the P-Millennium simulation: Galaxy clustering
Astronomy and Astrophysics·2025· 1 citedOpen Access
The unabridged satellite luminosity function of Milky Way-like galaxies in ΛCDM: the contribution of ‘orphan’ satellites
Monthly Notices of the Royal Astronomical Society·2025· 6 citedOpen Access
FLAMINGO: combining kinetic SZ effect and galaxy–galaxy lensing measurements to gauge the impact of feedback on large-scale structure
Monthly Notices of the Royal Astronomical Society·2025· 9 citedOpen Access
On the accuracy of dark matter halo merger trees and the consequences for semi-analytic models of galaxy formation
Monthly Notices of the Royal Astronomical Society·2025· 9 citedOpen Access
cosmICweb: Cosmological Initial Conditions for Zoom-in Simulations in the Cloud
The Open Journal of Astrophysics·2025Open Access
The emperor’s new arc: gigaparsec patterns abound in a ΛCDM universe
Monthly Notices of the Royal Astronomical Society Letters·2025· 5 citedOpen Access
Assessing subhalo finders in cosmological hydrodynamical simulations
arXiv (Cornell University)·2025· 5 citedOpen Access
The Emperor's New Arc: gigaparsec patterns abound in a $Λ$CDM universe
arXiv (Cornell University)·2025Open Access
The FLAMINGO project: the coupling between baryonic feedback and cosmology in light of the <i>S</i>8 tension
Monthly Notices of the Royal Astronomical Society·2025· 12 citedOpen Access
On the accuracy of dark matter halo merger trees and the consequences for semi-analytic models of galaxy formation
arXiv (Cornell University)·2025Open Access
A comparison of pre-existing ΛCDM predictions with the abundance of <i>JWST</i> galaxies at high redshift
Monthly Notices of the Royal Astronomical Society·2024· 13 citedOpen Access
The unabridged satellite luminosity function of Milky Way-like galaxies in $Λ$CDM: the contribution of "orphan" satellites
arXiv (Cornell University)·2024Open Access
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Frequent Co-authors

Carlos S. Frenk(38), Adrian Jenkins(20), Shaun Cole(17), Matthieu Schaller(17), R. G. Bower(16), C. G. Lacey(14), Joop Schaye(12), Andrew Benson(11), C. M. Baugh(11), Tom Theuns(10), Violeta González-Pérez(10), Ian G. McCarthy(9), Robert A. Crain(8), Michelle Furlong(8), Claudia del P. Lagos(8), Simon D. M. White(7), Julio F. Navarro(6), P. Thomas(6), F. R. Pearce(5), Claudio Dalla Vecchia(5)