5 citations · 6 across the 8 of their papers we have counts for
7 papers · 1 filter
Testing Statistical Isotropy on the Sphere with Minkowski Tensors
Stephen Appleby, Changbom Park
We consider how a class of morphological descriptors, the Minkowski Tensors (MTs), can be used to test the statistical isotropy of random fields on the sphere. The definition of th…
Morphological Signatures of Gravitational Evolution, Redshift-Space Distortions, and Massive Neutrinos in Large-Scale Structure
Priya Goyal, Stephen Appleby, Pravabati Chingangbam +1
We investigate the morphological properties of large-scale structure in the Universe and the physical processes that modify the excursion-set morphology of the three-dimensional ma…
Non-Gaussian Expansion of Minkowski Tensors in Redshift Space
Stephen Appleby, Christophe Pichon, Pravabati Chingangbam +2
This paper focuses on extending the use of Minkowski Tensors to analyze anisotropic signals in cosmological data, focusing on those introduced by redshift space distortion. We deri…
Local patch analysis of ACT DR6 convergence map using morphological statistics
Masroor Bashir, Nidharssan S, Pravabati Chingangbam +4
We carry out a comprehensive hierarchical multi-scale morphological analysis to search for anomalous behaviour in the large scale matter distribution using convergence map provided…
Topological approach to void finding applied to the SDSS galaxy map
Manu Aggarwal, Motonari Tonegawa, Stephen Appleby +2
The structure of the low redshift Universe is dominated by a multi-scale void distribution delineated by filaments and walls of galaxies. The characteristics of voids; such as morp…
Probing cosmology via the clustering of critical points
Junsup Shim, Christophe Pichon, Dmitri Pogosyan +5
Exclusion zones in the cross-correlations between critical points (peak-void, peak-wall, filament-wall, filament-void) of the density field define quasi-standard rulers that can be…
The effects of non-linearity on the growth rate constraint from velocity correlation functions
Motonari Tonegawa, Stephen Appleby, Changbom Park +2
The two-point statistics of the cosmic velocity field, measured from galaxy peculiar velocity (PV) surveys, can be used as a dynamical probe to constrain the growth rate of large-s…