Back to Search
Start Over
Wide-angle redshift-space distortions at quasi-linear scales: cross-correlation functions from Zel’dovich approximation
- Source :
- Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 491 (3), pp.4162-4179. ⟨10.1093/mnras/stz3272⟩, Mon.Not.Roy.Astron.Soc., Mon.Not.Roy.Astron.Soc., 2020, 491 (3), pp.4162-4179. ⟨10.1093/mnras/stz3272⟩, Monthly Notices of the Royal Astronomical Society, 2020, 491 (3), pp.4162-4179. ⟨10.1093/mnras/stz3272⟩
- Publication Year :
- 2020
- Publisher :
- HAL CCSD, 2020.
-
Abstract
- Redshift-space distortions (RSD) in galaxy redshift surveys generally break both the isotropy and homogeneity of galaxy distribution. While the former aspect is particularly highlighted as a probe of growth of structure induced by gravity, the latter aspect, often quoted as wide-angle RSD but ignored in most of the cases, will become important and critical to account for as increasing the statistical precision in next-generation surveys. However, the impact of wide-angle RSD has been mostly studied using linear perturbation theory. In this paper, employing the Zel'dovich approximation, i.e., first-order Lagrangian perturbation theory for gravitational evolution of matter fluctuations, we present a quasi-linear treatment of wide-angle RSD, and compute the cross-correlation function. The present formalism consistently reproduces linear theory results, and can be easily extended to incorporate relativistic corrections (e.g., gravitational redshift).<br />18 pages, 6 figures, updated to match published version
- Subjects :
- Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Cross-correlation
010308 nuclear & particles physics
Isotropy
Linear system
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Galaxy
Redshift
methods: analytical
Gravitation
Redshift-space distortions
Space and Planetary Science
cosmology: theory
0103 physical sciences
Statistical physics
large-scale structure of Universe
galaxies: distances and redshifts
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
010303 astronomy & astrophysics
Gravitational redshift
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 00358711 and 13652966
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 491 (3), pp.4162-4179. ⟨10.1093/mnras/stz3272⟩, Mon.Not.Roy.Astron.Soc., Mon.Not.Roy.Astron.Soc., 2020, 491 (3), pp.4162-4179. ⟨10.1093/mnras/stz3272⟩, Monthly Notices of the Royal Astronomical Society, 2020, 491 (3), pp.4162-4179. ⟨10.1093/mnras/stz3272⟩
- Accession number :
- edsair.doi.dedup.....03b1f47e8d785a7f0647b9fa14c1d77b