299 citations · 467 across the 34 of their papers we have counts for
14 papers · 1 filter
The subtle statistics of the distance ladder: On the distance prior and selection effects
Harry Desmond, Richard Stiskalek, José Antonio Nájera +1
Statistical methodology is rarely considered significant in distance-ladder studies or a potential contributor to the Hubble tension. We suggest it should be, highlighting two appr…
MEGATRON: the impact of non-equilibrium effects and local radiation fields on the circumgalactic medium at cosmic noon
Corentin Cadiou, Harley Katz, Martin P. Rey +22
We present three cosmological radiation-hydrodynamic zoom simulations of the progenitor of a Milky Way-mass galaxy from the MEGATRON suite. The simulations combine on-the-fly radia…
MEGATRON: Reproducing the Diversity of High-Redshift Galaxy Spectra with Cosmological Radiation Hydrodynamics Simulations
Harley Katz, Martin P. Rey, Corentin Cadiou +21
We present the MEGATRON suite of cosmological radiation hydrodynamics simulations following the formation of Milky Way-mass galaxies from the earliest cosmic epochs when Population…
MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies
Martin P. Rey, Harley Katz, Corentin Cadiou +23
We study the stellar mass-iron metallicity relation of dwarf galaxies in the new high-resolution MEGATRON cosmological radiation-hydrodynamics simulations. These simulations model…
from peculiar velocities: agreement with Planck for Tully--Fisher and supernovae, tension for the fundamental plane
Richard Stiskalek
Peculiar velocity measurements constrain the parameter combination , the product of the linear growth rate and the fluctuation amplitude . Under the approximation th…
No evidence for local anisotropy from Tully--Fisher or supernova distances
Richard Stiskalek, Harry Desmond, Guilhem Lavaux
Claims of local () anisotropy in the Hubble constant have been made based on direct distance tracers such as Tully-Fisher galaxies and Type Ia supernovae. We revis…
Two per cent measurement of from Cepheids alone
Richard Stiskalek, Harry Desmond, Eleni Tsaprazi +4
One of the most pressing problems in current cosmology is the cause of the Hubble tension. We revisit a two-rung distance ladder, composed only of Cepheid periods and magnitudes, a…
Renzo's rule revisited: A statistical study of galaxies' baryon - dark matter coupling
Enoch Ko, Tariq Yasin, Harry Desmond +2
We present a systematic statistical analysis of an informal astrophysical phenomenon known as Renzo's rule (or Sancisi's law), which states that "for any feature in a galaxy's lumi…
CosmoBench: A Multiscale, Multiview, Multitask Cosmology Benchmark for Geometric Deep Learning
Ningyuan Huang, Richard Stiskalek, Jun-Young Lee +6
Cosmological simulations provide a wealth of data in the form of point clouds and directed trees. A crucial goal is to extract insights from this data that shed light on the nature…
Testing the local supervoid solution to the Hubble tension with direct distance tracers
Richard Stiskalek, Harry Desmond, Indranil Banik
Several observational studies suggest that the local few hundred Mpc around the Local Group are significantly underdense based on source number counts in redshift space across much…
The Manticore Project I: a digital twin of our cosmic neighbourhood from Bayesian field-level analysis
Stuart McAlpine, Jens Jasche, Metin Ata +4
We present the first results from the Manticore project, dubbed Manticore-Local, a suite of Bayesian constrained simulations of the nearby Universe, generated by fitting a physical…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
The galaxy-environment connection revealed by constrained simulations
Catherine Gallagher, Tariq Yasin, Richard Stiskalek +2
The evolution of galaxies is known to be connected to their position within the large-scale structure and their local environmental density. We investigate the relative importance…
The Velocity Field Olympics: Assessing velocity field reconstructions with direct distance tracers
Richard Stiskalek, Harry Desmond, Julien Devriendt +5
The peculiar velocity field of the local Universe provides direct insights into its matter distribution and the underlying theory of gravity, and is essential in cosmological analy…