Homogeneity and isotropy in the 2MASS Photometric Redshift catalogue
| Autor: | Alonso, David, Salvador, Ana Isabel, S��nchez, Francisco Javier, Bilicki, Maciej, Garc��a-Bellido, Juan, S��nchez, Eusebio |
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| Přispěvatelé: | UAM. Departamento de Física Teórica, Instituto de Física Teórica (IFT) |
| Rok vydání: | 2015 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Cosmology: observations large-scale structure of the Universe [Cosmology] FOS: Physical sciences Física Astrophysics::Cosmology and Extragalactic Astrophysics observations [Cosmology] Astrophysics - Cosmology and Nongalactic Astrophysics Cosmology: large-scale structure of the Universe |
| Zdroj: | Biblos-e Archivo. Repositorio Institucional de la UAM instname Biblos-e Archivo: Repositorio Institucional de la UAM Universidad Autónoma de Madrid |
| Popis: | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved También aparece con este otro título y con el mismo DOI: "Homogeneity and isotropy in the Two Micron All Sky Survey Photometric Redshift catalogue" Using the 2MASS Photometric Redshift catalogue we perform a number of statistical tests aimed at detecting possible departures from statistical homogeneity and isotropy in the large-scale structure of the Universe. Making use of the angular homogeneity index, an observable proposed in a previous publication, as well as studying the scaling of the angular clustering and number counts with magnitude limit, we place constraints on the fractal nature of the galaxy distribution. We find that the statistical properties of our sample are in excellent agreement with the standard cosmological model, and that it reaches the homogeneous regime significantly faster than a class of fractal models with dimensions D DA is supported by ERC grant 259505. MB acknowledges the financial assistance of the South African National Research Foundation (NRF), as well as of the Polish National Science Centre under contract #UMO-2012/07/D/ST9/02785 |
| Databáze: | OpenAIRE |
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