3 papers
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.CO2020
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…