69 citations · 350 across the 22 of their papers we have counts for
3 papers · 1 filter
Potential signature of a quadrupolar Hubble expansion in Pantheon+ supernovae
Jessica A. Cowell, Suhail Dhawan, Hayley J. Macpherson
The assumption of isotropy -- that the Universe looks the same in all directions on large scales -- is fundamental to the standard cosmological model. This model forms the building…
Cosmological distances with general-relativistic ray tracing: framework and comparison to cosmographic predictions
Hayley J. Macpherson
In this work we present the first results from a new ray-tracing tool to calculate cosmological distances in the context of fully nonlinear general relativity. We use this tool to…
The quadrupole in the local Hubble parameter: first constraints using Type Ia supernova data and forecasts for future surveys
Suhail Dhawan, Antonin Borderies, Hayley J. Macpherson +1
The cosmological principle asserts that the Universe looks spatially homogeneous and isotropic on sufficiently large scales. Given the fundamental implications of the cosmological…