Document Detail

Weak Lensing by Large-Scale Structure: A Dark Matter Halo Approach.
MedLine Citation:
PMID:  10828996     Owner:  NLM     Status:  Publisher    
Weak gravitational lensing observations probe the spectrum and evolution of density fluctuations and the cosmological parameters that govern them, but they are currently limited to small fields and subject to selection biases. We show how the expected signal from large-scale structure arises from the contributions from and correlations between individual halos. We determine the convergence power spectrum as a function of the maximum halo mass and so provide the means to interpret results from surveys that lack high-mass halos either through selection criteria or small fields. Since shot noise from rare massive halos is mainly responsible for the sample variance below 10&arcmin;, our method should aid our ability to extract cosmological information from small fields.
Cooray; Hu; Miralda-Escudé
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Publication Detail:
Journal Detail:
Title:  The Astrophysical journal     Volume:  535     ISSN:  0004-637X     ISO Abbreviation:  Astrophys. J.     Publication Date:  2000 May 
Date Detail:
Created Date:  2000-05-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9890633     Medline TA:  Astrophys J     Country:  -    
Other Details:
Languages:  ENG     Pagination:  L9-L12     Citation Subset:  -    
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