activity
20202026
most citedThe Flat Sky Approximation to Galaxy Number Counts

14 citations · 32 across the 7 of their papers we have counts for

collaborators

7 papers

astro-ph.CO2026

A Lower Bound on the Number of Fundamental Constants

William Luke Matthewson

We describe here, for the first time, a lower bound on the total number of fundamental constants required for a mathematical description of our physical universe to be complete. Th…

astro-ph.CO2025

Could We Be Fooled about Phantom Crossing?

Ryan E. Keeley, Arman Shafieloo, William L. Matthewson

Recent data from DESI Year 2 BAO, Planck CMB, and various supernova compilations suggest a preference for evolving dark energy, with hints that the equation of state may cross the…

astro-ph.CO2025

Isotropy Test with Quasars Using Method of Smoothed Residuals

Akhil Antony, Stephen Appleby, William L Matthewson +1

To assess the significance and scale dependence of anomalous large scale modes in the CatWISE quasar data, we generate smoothed number density fields on the sphere and study their…

astro-ph.CO2024★ 4 cited

Star-Crossed Labours: Checking Consistency Between Current Supernovae Compilations

William L. Matthewson, Arman Shafieloo

We make use of model-independent statistical methods to assess the consistency of three different supernova compilations: Union3, Pantheon+ and DES 5-year supernovae. We expand the…

astro-ph.CO2022★ 6 cited

Redshift weighted galaxy number counts

William L Matthewson, Dennis Stock, Ruth Durrer

In this paper we introduce the `redshift fluctuation' as a gauge-invariant cosmological observable and give its fully relativistic expression at first order in cosmological perturb…

astro-ph.CO2021★ 8 cited

Small scale effects in the observable power spectrum at large angular scales

William L. Matthewson, Ruth Durrer

In this paper we show how effects from small scales can enter the angular-redshift power spectrum . In particular, we show that spectroscopic surveys with high redshi…

astro-ph.CO2020★ 14 cited

The Flat Sky Approximation to Galaxy Number Counts

William L. Matthewson, Ruth Durrer

We derive and test an approximation for the angular power spectrum of galaxy number counts in the flat sky limit. The standard density and redshift space distortion (RSD) terms in…