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Measurement of marked correlation functions in SDSS-III Baryon Oscillation Spectroscopic Survey using LOWZ galaxies in Data Release 12

Satpathy, Siddharth; Croft, Rupert A.C.; Ho, Shirley; Li, Baojiu

Measurement of marked correlation functions in SDSS-III Baryon Oscillation Spectroscopic Survey using LOWZ galaxies in Data Release 12 Thumbnail


Authors

Siddharth Satpathy

Rupert A.C. Croft

Shirley Ho



Abstract

Marked correlation functions, which are sensitive to the clustering of galaxies in different environments, have been proposed as constraints on modified gravity models. We present measurements of the marked correlation functions of galaxies in redshift space using 361,761 LOWZ (zeff = 0.32) galaxies from the Sloan Digital Sky Survey III (SDSS III) Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 12 (DR12) and compare them to ΛCDM+General Relativity simulations. We apply mass cuts to find the best match between the redshift space autocorrelation function of subhaloes in the simulation and in the observations. We then compare the marked correlation functions, finding no significant evidence for deviations of the marked correlation functions of LOWZ galaxies from ΛCDM on scales 6 h−1Mpc ≤s ≤ 69 h−1Mpc. The constraining power of marked correlation functions in our analysis is limited by our ability to model the autocorrelation function of galaxies on small scales including the effect of redshift distortions. The statistical errors are well below the differences seen between marked correlation functions of f(R) gravity models and ΛCDM in recent publications (Armijo et al., Hernández-Aguayo et al.) indicating that improved future theoretical analyses should be able to rule out some models definitively.

Citation

Satpathy, S., Croft, R. A., Ho, S., & Li, B. (2019). Measurement of marked correlation functions in SDSS-III Baryon Oscillation Spectroscopic Survey using LOWZ galaxies in Data Release 12. Monthly Notices of the Royal Astronomical Society, 484(2), 2148-2165. https://doi.org/10.1093/mnras/stz009

Journal Article Type Article
Acceptance Date Dec 26, 2018
Online Publication Date Jan 9, 2019
Publication Date Apr 1, 2019
Deposit Date Jan 4, 2019
Publicly Available Date Mar 29, 2024
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 484
Issue 2
Pages 2148-2165
DOI https://doi.org/10.1093/mnras/stz009
Related Public URLs https://arxiv.org/abs/1901.01447

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Copyright Statement
This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record will be available at https://doi.org/10.1093/mnras/stz009






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