20 citations · 116 across the 28 of their papers we have counts for
10 papers · 1 filter
The Odd-Parity Part of the Observed Galaxy Trispectrum
Pritha Paul, Chris Clarkson, Roy Maartens
Recently the galaxy matter density 4-point correlation function has been looked at to investigate parity violation in large scale structure surveys. The 4-point correlation functio…
Probing the Cosmological Principle with weak lensing shear
James Adam, Roy Maartens, Julien Larena +1
The Cosmological Principle is a cornerstone of the standard model of cosmology and shapes how we view the Universe and our place within it. It is imperative, then, to devise multip…
Expanding covariant cosmography of the local Universe: incorporating the snap and axial symmetry
Basheer Kalbouneh, Jessica Santiago, Christian Marinoni +3
Studies show that the model-independent, fully non-perturbative covariant cosmographic approach is suitable for analyzing the local Universe . However, accurately…
Relativistic and wide-angle corrections to galaxy power spectra
Sheean Jolicoeur, Sêcloka L. Guedezounme, Roy Maartens +3
Galaxy surveys contain information on the largest scales via wide-angle and relativistic contributions. By combining two different galaxy populations, we can suppress the strong co…
Decoupling Local Primordial non-Gaussianity from Relativistic Effects in the Galaxy Bispectrum
Samantha Rossiter, Stefano Camera, Chris Clarkson +1
Upcoming galaxy surveys aim to map the Universe with unprecedented precision, depth and sky coverage. The galaxy bispectrum is a prime source of information as it allows us to prob…
Multipoles of the galaxy bispectrum on a light cone: wide-separation and relativistic corrections
Chris Addis, Caroline Guandalin, Chris Clarkson
The galaxy bispectrum provides access to correlations among different scales that cannot be captured by the power spectrum alone, and with the Stage-IV galaxy surveys it enables th…
Using relativistic effects in large-scale structure to constrain astrophysical properties of galaxy populations
Daniel Sobral-Blanco, Camille Bonvin, Chris Clarkson +1
Upcoming large-scale structure surveys will be able to measure new features in the galaxy two point correlation function. Relativistic effects appear on large scales as subtle corr…
Squeezing information from radio surveys to probe the primordial Universe
Dionysios Karagiannis, Roy Maartens, Shun Saito +3
A major goal of cosmology is to understand the nature of the field(s) which drove primordial Inflation. Through future observations, the statistics of large-scale structure will al…
Apparent parity violation in the observed galaxy trispectrum
Pritha Paul, Chris Clarkson, Roy Maartens
Recent measurements of the 4-point correlation function in large-scale galaxy surveys have found apparent evidence of parity violation in the distribution of galaxies. This cannot…
Towards Cosmography of the Local Universe
Julian Adamek, Chris Clarkson, Ruth Durrer +3
Anisotropies in the distance-redshift relation of cosmological sources are expected due to large-scale inhomogeneities in the local Universe. When the observed sources are tracing…