Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:0904.4703)
· References in the article
· Citations to the Article (3) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Lensing Bias in Cosmic Shear
Authors:
Schmidt, Fabian; Rozo, Eduardo; Dodelson, Scott; Hui, Lam; Sheldon, Erin
Affiliation:
AA(Department of Astronomy & Astrophysics, The University of Chicago, Chicago, IL 60637, USA ; Kavli Institute for Cosmological Physics, Chicago, IL 60637, USA ), AB(CCAPP, The Ohio State University, Columbus, OH 43210, USA ), AC(Department of Astronomy & Astrophysics, The University of Chicago, Chicago, IL 60637, USA ; Kavli Institute for Cosmological Physics, Chicago, IL 60637, USA ; Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, IL 60510, USA ), AD(Institute for Strings, Cosmology, and Astroparticle Physics (ISCAP), New York, NY, USA ; Department of Physics, Columbia University, New York, NY 10027, USA ), AE(Brookhaven National Laboratory, Upton, NY 11973, USA)
Publication:
The Astrophysical Journal, Volume 702, Issue 1, pp. 593-602 (2009). (ApJ Homepage)
Publication Date:
09/2009
Origin:
IOP
ApJ Keywords:
cosmology: theory, dark matter, gravitational lensing, large-scale structure of universe
DOI:
10.1088/0004-637X/702/1/593
Bibliographic Code:
2009ApJ...702..593S

Abstract

Only galaxies bright enough and large enough to be unambiguously identified and measured are included in galaxy surveys used to estimate cosmic shear. We demonstrate that because gravitational lensing can scatter galaxies across the brightness and size thresholds, cosmic shear experiments suffer from lensing bias. We calculate the effect on the shear power spectrum and show that—unless corrected for—it will lead analysts to cosmological parameters estimates that are biased at the 2-3σ level in DETF Stage III experiments, such as the Dark Energy Survey.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints