The anisotropic line correlation function as a probe of anisotropies in galaxy surveys

Eggemeier, A, Battefeld, T, Smith, R E and Niemeyer, J (2015) The anisotropic line correlation function as a probe of anisotropies in galaxy surveys. Monthly Notices of the Royal Astronomical Society, 453 (1). pp. 797-809. ISSN 0035-8711

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We propose an anisotropic generalization of the line correlation function (ALCF) to separate and quantify phase information in the large-scale structure of galaxies. The line correlation function probes the strictly non-linear regime of structure formation and since phase information drops out of the power spectrum, the line correlation function provides a complementary tool to commonly used techniques based on two-point statistics. Furthermore, it is independent of linear bias as well as the Gaussian variance on the modulus of the density field and thus may also prove to be advantageous compared to the bispectrum or similar higher order statistics for certain cases. For future applications, it is vital, though, to be able to account for observational effects that cause anisotropies in the distribution of galaxies. Based on a number of numerical studies, we find that our ALCF is well suited to accomplish this task and we demonstrate how the Alcock-Paczynski effect and kinematical redshift-space distortions can in principle be measured via the ALCF.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Astronomy Centre
Subjects: Q Science > QB Astronomy
Depositing User: Richard Chambers
Date Deposited: 05 Aug 2016 11:47
Last Modified: 14 Mar 2017 11:45

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