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Power spectrum multipoles on the curved sky: an application to the 6-degree Field Galaxy Survey

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Power spectrum multipoles on the curved sky : an application to the 6-degree Field Galaxy Survey. / Blake, Chris; Carter, Paul; Koda, Jun.

In: Monthly Notices of the Royal Astronomical Society, Vol. 479, No. 4, 01.10.2018, p. 5168-5183.

Research output: Contribution to journalArticlepeer-review

Harvard

Blake, C, Carter, P & Koda, J 2018, 'Power spectrum multipoles on the curved sky: an application to the 6-degree Field Galaxy Survey', Monthly Notices of the Royal Astronomical Society, vol. 479, no. 4, pp. 5168-5183. https://doi.org/10.1093/mnras/sty1814

APA

Blake, C., Carter, P., & Koda, J. (2018). Power spectrum multipoles on the curved sky: an application to the 6-degree Field Galaxy Survey. Monthly Notices of the Royal Astronomical Society, 479(4), 5168-5183. https://doi.org/10.1093/mnras/sty1814

Vancouver

Blake C, Carter P, Koda J. Power spectrum multipoles on the curved sky: an application to the 6-degree Field Galaxy Survey. Monthly Notices of the Royal Astronomical Society. 2018 Oct 1;479(4):5168-5183. https://doi.org/10.1093/mnras/sty1814

Author

Blake, Chris ; Carter, Paul ; Koda, Jun. / Power spectrum multipoles on the curved sky : an application to the 6-degree Field Galaxy Survey. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 479, No. 4. pp. 5168-5183.

Bibtex

@article{fa3ecf7858c34a8594726917d2059b03,
title = "Power spectrum multipoles on the curved sky: an application to the 6-degree Field Galaxy Survey",
abstract = "The peculiar velocities of galaxies cause their redshift-space clustering to depend on the angle to the line of sight, providing a key test of gravitational physics on cosmological scales. These effects may be described using a multipole expansion of the clustering measurements. Focussing on Fourier-space statistics, we present a new analysis of the effect of the survey window function, and the variation of the line of sight across a survey, on the modelling of power spectrum multipoles.We determine the joint covariance of the Fourier-space multipoles in a Gaussian approximation, and indicate how these techniques may be extended to studies of overlapping galaxy populations via multipole cross-power spectra.We apply our methodology to one of the widest area galaxy redshift surveys currently available, the 6-degree Field Galaxy Survey, deducing a normalized growth rate fσ8(z = 0.06) = 0.38 ± 0.12 in the low-redshift Universe, in agreement with previous analyses of this data set using different techniques. Our framework should be useful for processing future wide-angle galaxy redshift surveys.",
keywords = "Large-scale structure of universe, Methods: statistical, Surveys",
author = "Chris Blake and Paul Carter and Jun Koda",
year = "2018",
month = oct,
day = "1",
doi = "10.1093/mnras/sty1814",
language = "English",
volume = "479",
pages = "5168--5183",
journal = "MNRAS",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",

}

RIS

TY - JOUR

T1 - Power spectrum multipoles on the curved sky

T2 - an application to the 6-degree Field Galaxy Survey

AU - Blake, Chris

AU - Carter, Paul

AU - Koda, Jun

PY - 2018/10/1

Y1 - 2018/10/1

N2 - The peculiar velocities of galaxies cause their redshift-space clustering to depend on the angle to the line of sight, providing a key test of gravitational physics on cosmological scales. These effects may be described using a multipole expansion of the clustering measurements. Focussing on Fourier-space statistics, we present a new analysis of the effect of the survey window function, and the variation of the line of sight across a survey, on the modelling of power spectrum multipoles.We determine the joint covariance of the Fourier-space multipoles in a Gaussian approximation, and indicate how these techniques may be extended to studies of overlapping galaxy populations via multipole cross-power spectra.We apply our methodology to one of the widest area galaxy redshift surveys currently available, the 6-degree Field Galaxy Survey, deducing a normalized growth rate fσ8(z = 0.06) = 0.38 ± 0.12 in the low-redshift Universe, in agreement with previous analyses of this data set using different techniques. Our framework should be useful for processing future wide-angle galaxy redshift surveys.

AB - The peculiar velocities of galaxies cause their redshift-space clustering to depend on the angle to the line of sight, providing a key test of gravitational physics on cosmological scales. These effects may be described using a multipole expansion of the clustering measurements. Focussing on Fourier-space statistics, we present a new analysis of the effect of the survey window function, and the variation of the line of sight across a survey, on the modelling of power spectrum multipoles.We determine the joint covariance of the Fourier-space multipoles in a Gaussian approximation, and indicate how these techniques may be extended to studies of overlapping galaxy populations via multipole cross-power spectra.We apply our methodology to one of the widest area galaxy redshift surveys currently available, the 6-degree Field Galaxy Survey, deducing a normalized growth rate fσ8(z = 0.06) = 0.38 ± 0.12 in the low-redshift Universe, in agreement with previous analyses of this data set using different techniques. Our framework should be useful for processing future wide-angle galaxy redshift surveys.

KW - Large-scale structure of universe

KW - Methods: statistical

KW - Surveys

UR - http://www.scopus.com/inward/record.url?scp=85051486535&partnerID=8YFLogxK

U2 - 10.1093/mnras/sty1814

DO - 10.1093/mnras/sty1814

M3 - Article

AN - SCOPUS:85051486535

VL - 479

SP - 5168

EP - 5183

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 4

ER -

ID: 15862956