R
Ravi K. Sheth
Researcher at University of Pennsylvania
Publications - 350
Citations - 45122
Ravi K. Sheth is an academic researcher from University of Pennsylvania. The author has contributed to research in topics: Galaxy & Halo. The author has an hindex of 87, co-authored 344 publications receiving 42885 citations. Previous affiliations of Ravi K. Sheth include International Centre for Theoretical Physics & Fermilab.
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Merging and hierarchical clustering from an initially Poisson distribution
TL;DR: In this paper, the authors derived the excursion set, Press{Schechter mass spectrum for a Poisson distribution of identical particles, and formulated and solved the description of merging and hierarchical clustering from an initially Gaussian distribution.
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The excursion set approach in non-Gaussian random fields
Marcello Musso,Ravi K. Sheth +1 more
TL;DR: In this paper, the first crossing distribution of physically motivated barriers by random walks with correlated steps was studied and the leading order term in this series is the most relevant for understanding the massive objects of most interest in cosmology.
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Non-Gaussian distribution and clustering of hot and cold pixels in the five-year WMAP sky
TL;DR: In this article, measurements of the clustering of hot and cold patches in the microwave background sky as measured from the Wilkinson Microwave Anisotropy Probe 5-year data are compared with theoretical predictions which assume that the cosmological signal obeys Gaussian statistics.
Posted Content
Systematic effects on the size-luminosity relation: dependence on model fitting and morphology
Mariangela Bernardi,A. Meert,Vinu Vikram,Marc Huertas-Company,Simona Mei,Francesco Shankar,Ravi K. Sheth +6 more
TL;DR: In this paper, the authors quantify the systematics in the size-luminosity relation of galaxies in the SDSS main sample which arise from fitting different 1-and 2-component model profiles to the images.
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Merger history trees of dark matter haloes in moving barrier models
TL;DR: An algorithm for generating merger histories of dark matter haloes based on the excursion-set approach with moving barriers whose shape is motivated by the ellipsoidal collapse model of halo formation, which suggests a natural set of scaling variables for describing the abundance of h Halo progenitors.