49 papers
MIGHTEE-HI / LADUMA: Investigating the link between baryons and dynamics with 130 resolved HI-selected galaxies
Andreea A VÄrÄÅteanu, Andreea A Vărăşteanu, Matt J. Jarvis +16
The baryonic Tully-Fisher relation (bTFR) and the radial acceleration relation (RAR) link the observed dynamics in galaxies to that expected from their baryonic mass distributions.…
Constraints on the gravitational potential from DESI DR2 BAO and its implications for the local void scenario
Indranil Banik, José Antonio Nájera, José Antonio Nájera +1
The authors use DESI DR2 BAO together with CMB, BBN and cosmic‑chronometer data to measure any gravitational potential offset between the Milky Way and distant sources, testing whe…
Disentangling modified gravity and galaxy bias with field-level inference
Sophie Hoyland, Daniela Saadeh, Kazuya Koyama +1
We present a field-level inference framework for testing gravity with the large-scale structure that exploits the full information content of the galaxy distribution. Traditional a…
Forward-modelling Milky Way Cepheids: selection effects and physical priors in the Gaia-HST calibration
Richard Stiskalek, Adam Riess, Harry Desmond +2
The advent of high-precision Gaia parallaxes for Milky Way Cepheids enables per cent-level calibration of the local distance ladder and the Hubble constant . We revisit the Mi…
The age of the Universe from a large sample of the oldest Galactic stars
Indranil Banik, Thenujaya Kudakolawa Kaluarachchige, Stephen Cookson +1
We estimate the age of the Universe using the Xiang & Rix sample of 247,103 Milky Way stars with high-resolution spectroscopy from LAMOST DR7 and eDR3 parallaxes. Stellar ag…
Evaluation of Population Initialization Methods for Genetic Programming-based Symbolic Regression
Lukas Kammerer, Gabriel Kronberger, Deaglan J. Bartlett +3
We analyze the effect of optimizing the initial population of genetic programming (GP) for symbolic regression (SR) on the accuracy and complexity of solutions. We compare three we…