299 citations · 2.2k across the 101 of their papers we have counts for
20 papers · 1 filter
Introduction to Symbolic Regression in the Physical Sciences
Deaglan J. Bartlett, Harry Desmond, Pedro G. Ferreira +1
Symbolic regression (SR) has emerged as a powerful method for uncovering interpretable mathematical relationships from data, offering a novel route to both scientific discovery and…
Constraining Fifth Forces using the Local Distance Ladder: Implications for the Hubble Tension
Marcus Högås, Edvard Mörtsell, Harry Desmond +1
We revisit the local distance ladder measurement of the Hubble constant in models where gravity is modified by a fifth force, an additional long-range interaction. In many such the…
The Cosmological Dipole in Tilted Anisotropic Universes
Alicia Martín, Constantinos Skordis, Deaglan J. Bartlett +3
There is tentative evidence for a mismatch between the rest frames of matter and the cosmic microwave background, the "quasar dipole anomaly". We consider such a dipole in tilted a…
Constraining dark matter halo profiles with symbolic regression
Alicia Martín, Tariq Yasin, Deaglan J. Bartlett +2
Dark matter haloes are typically characterised by radial density profiles with fixed forms motivated by simulations (e.g. NFW). However, simulation predictions depend on uncertain…
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…
Clustering properties of the CatWISE2020 quasar catalogue and their impact on the cosmic dipole anomaly
Sebastian von Hausegger, Nathan Secrest, Harry Desmond +3
The cosmic dipole anomaly -- the observation of a significant mismatch between the dipole observed in the matter distribution and that expected given the kinematic interpretation o…
Comparing measures of the Hubble and BAO tensions in CDM and possible solutions in gravity
José Antonio Nájera, Indranil Banik, Harry Desmond +1
We test whether symmetric teleparallel gravity theories can solve the Hubble tension consistently with DESI DR2 BAO. We consider three functional forms: logarithmic,…
The causal structure of galactic astrophysics
Harry Desmond, Joseph Ramsey
Data-driven astrophysics currently relies on the detection and characterisation of correlations between objects' properties, which are then used to test physical theories that make…
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…
(Exhaustive) Symbolic Regression and model selection by minimum description length
Harry Desmond
Symbolic regression is the machine learning method for learning functions from data. After a brief overview of the symbolic regression landscape, I will describe the two main chall…
syren-baryon: Analytic emulators for the impact of baryons on the matter power spectrum
Lukas Kammerer, Deaglan J. Bartlett, Gabriel Kronberger +2
Baryonic physics has a considerable impact on the distribution of matter in our Universe on scales probed by current and future cosmological surveys, acting as a key systematic in…
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…
Modified Newtonian Dynamics: Observational Successes and Failures
Harry Desmond
Modified Newtonian Dynamics (MOND) is an alternative to the dark matter hypothesis that attempts to explain the "missing gravity" problem in astrophysics and cosmology through a mo…
MIGHTEE-HI: The radial acceleration relation with resolved stellar mass measurements
Andreea A. Vărăşteanu, Matt J. Jarvis, Anastasia A. Ponomareva +8
The radial acceleration relation (RAR) is a fundamental relation linking baryonic and dark matter in galaxies by relating the observed acceleration derived from dynamics to the one…
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…
Consistencies and inconsistencies in redshift-independent distances
José Antonio Nájera, Harry Desmond
Redshift-independent distances underpin much of astrophysics, and there exists a plethora of methods to estimate them. However, the extent to which the distances they imply are con…
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…