A Robust Estimator of the SmallScale Galaxy CorrelationFunction
Abstract
We present a new estimator, {omega}, of the smallscale galaxy correlation function that is robust against the effects of redshiftspace distortions and largescale structures. The estimator is a weighted integral of the redshift space or angular correlation function and is a convolution of the realspace correlation function with a localized filter. This allows a direct comparison with theory, without modeling redshiftspace distortions and the largescale correlation function. This has a number of advantages over the more traditional w{sub p} estimator, including (1) an insensitivity to largescale structures and the details of the truncation of the lineofsight integral, (2) a welllocalized kernel in {zeta}(r) and (3) being unbinned. We discuss how this estimator would be used in practice, applying it to a sample of mock galaxies selected from the Millennium simulation.
 Authors:
 Publication Date:
 Research Org.:
 Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 928010
 Report Number(s):
 LBNL62026
Journal ID: ISSN 00358711; MNRAA4; R&D Project: PHFNP; BnR: 400409900; TRN: US200816%%979
 DOE Contract Number:
 DEAC0205CH11231
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Monthly Notices of the Royal AstronomicalSociety; Journal Volume: 376; Journal Issue: 4; Related Information: Journal Publication Date: 04/2007
 Country of Publication:
 United States
 Language:
 English
 Subject:
 99; ANGULAR CORRELATION; CORRELATION FUNCTIONS; GALAXIES; KERNELS; SIMULATION
Citation Formats
Padmanabhan, Nikhil, White, Martin, and Eisenstein, Daniel J. A Robust Estimator of the SmallScale Galaxy CorrelationFunction. United States: N. p., 2007.
Web. doi:10.1111/j.13652966.2007.11554.x.
Padmanabhan, Nikhil, White, Martin, & Eisenstein, Daniel J. A Robust Estimator of the SmallScale Galaxy CorrelationFunction. United States. doi:10.1111/j.13652966.2007.11554.x.
Padmanabhan, Nikhil, White, Martin, and Eisenstein, Daniel J. Tue .
"A Robust Estimator of the SmallScale Galaxy CorrelationFunction". United States.
doi:10.1111/j.13652966.2007.11554.x.
@article{osti_928010,
title = {A Robust Estimator of the SmallScale Galaxy CorrelationFunction},
author = {Padmanabhan, Nikhil and White, Martin and Eisenstein, Daniel J.},
abstractNote = {We present a new estimator, {omega}, of the smallscale galaxy correlation function that is robust against the effects of redshiftspace distortions and largescale structures. The estimator is a weighted integral of the redshift space or angular correlation function and is a convolution of the realspace correlation function with a localized filter. This allows a direct comparison with theory, without modeling redshiftspace distortions and the largescale correlation function. This has a number of advantages over the more traditional w{sub p} estimator, including (1) an insensitivity to largescale structures and the details of the truncation of the lineofsight integral, (2) a welllocalized kernel in {zeta}(r) and (3) being unbinned. We discuss how this estimator would be used in practice, applying it to a sample of mock galaxies selected from the Millennium simulation.},
doi = {10.1111/j.13652966.2007.11554.x},
journal = {Monthly Notices of the Royal AstronomicalSociety},
number = 4,
volume = 376,
place = {United States},
year = {Tue Jan 30 00:00:00 EST 2007},
month = {Tue Jan 30 00:00:00 EST 2007}
}

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