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December2000 Estimating the $K$ function of a point process with an application to cosmology
Ji Meng Loh, Jean M. Quashnock, Michael L. Stein
Ann. Statist. 28(6): 1503-1532 (December2000). DOI: 10.1214/aos/1015957468


Motivated by the study of an important data set for understanding the large-scale structure of the universe, this work considers the estimation of the reduced second-moment function, or $K$ function, of a stationary point process on $\mathbb{R}$ observed over a large number of segments of possibly varying lengths. Theory and simulation are used to compare the behavior of isotropic and rigid motion correction estimators and some modifications of these estimators. These results generally support the use of modified versions of the rigid motion correction.When applied to a catalog of astronomical objects known as absorbers, the proposed methods confirm results from earlier analyses of the absorber catalog showing clear evidence of clustering up to $50 h^{-1}$ Mpc and marginal evidence for clustering of matter on spatial scales beyond $100 h^{-1}$ Mpc, which is beyond the distance at which clustering of matter is now generally accepted to exist.


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Ji Meng Loh. Jean M. Quashnock. Michael L. Stein. "Estimating the $K$ function of a point process with an application to cosmology." Ann. Statist. 28 (6) 1503 - 1532, December2000.


Published: December2000
First available in Project Euclid: 12 March 2002

zbMATH: 1105.62371
MathSciNet: MR1835029
Digital Object Identifier: 10.1214/aos/1015957468

Primary: 62M30
Secondary: 60G55 , 62P35

Keywords: Bootstrapping , heavy-element absorption-line systems. , large-scale structure of the Universe , Reduced second-moment function

Rights: Copyright © 2000 Institute of Mathematical Statistics


Vol.28 • No. 6 • December2000
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