2.8k citations · 14.2k across the 98 of their papers we have counts for
5 papers · 1 filter
Does Inflationary Particle Production suggest Omega_m < 1?
Varun Sahni, Salman Habib
We study a class of FRW spacetimes with a nonminimally coupled light massive scalar field. Values of the coupling parameter xi<0 enhance long range power in the vacuum expectation…
Morphology of Clusters and Superclusters in N-body simulations of Cosmological Gravitational Clustering
B. S. Sathyaprakash, Varun Sahni, Sergei F. Shandarin
We analyse shapes of overdense regions (clusters and superclusters) in controlled N-body simulations of gravitational clustering with power law initial spectra P(k) \propto k^n, n…
Filaments and Pancakes in the IRAS 1.2 Jy Redshift Catalogue
B. S. Sathyaprakash, Varun Sahni, Sergei F. Shandarin +1
We explore shapes of clusters and superclusters in the IRAS 1.2 Jy redshift survey with three reconstructions spanning the range β= 0.1, 0.5, 1.0, where β= Ω^{0.6}/b, b is the bias…
Analysis of Large Scale Structure using Percolation, Genus and Shape Statistics
V. Sahni
We probe gravitational clustering in N-body simulations using geometrical descriptors sensitive to `connectedness': the genus curve, percolation and shape statistics. We find that…
Shapefinders: A new shape diagnostic for large scale structure
Varun Sahni, B. S. Sathyaprakash, Sergei F. Shandarin
We construct a set of shape-finders which determine shapes of compact surfaces (iso-density surfaces in galaxy surveys or N-body simulations) without fitting them to ellipsoidal co…