The clustering of galaxies in the SDSS-III baryon oscillation spectroscopic survey:potential systematics in fitting of baryon acoustic feature
| Autor: | R. W. O'Connell, Will J. Percival, Benjamin A. Weaver, D. Kirkby, Jeremy L. Tinker, Stephanie Escoffier, Shirley Ho, Xiaoying Xu, Ashley J. Ross, Ariel G. Sánchez, Marc Manera, Mariana Vargas-Magaña, Daniel J. Eisenstein, Antonio J. Cuesta, Donald P. Schneider, Joel R. Brownstein, Éric Aubourg |
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| Přispěvatelé: | APC - Cosmologie, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), McMaster University [Hamilton, Ontario], National University of Singapore (NUS), Institut Lagrange de Paris, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Department of Physics and Astronomy [Irvine], University of California [Irvine] (UC Irvine), University of California (UC)-University of California (UC), Pennsylvania State University (Penn State), Penn State System, New York University [New York] (NYU), NYU System (NYU), Universitat de Barcelona, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Sorbonne Université (SU), University of California [Irvine] (UCI), University of California-University of California |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Physics
[PHYS]Physics [physics] Cosmology and Gravitation Cosmologia Astronomy and Astrophysics Astrophysics Espectroscòpia de microones Cosmology Galaxy Baryon Boss Space and Planetary Science Observacions astronòmiques Range (statistics) Microwave spectroscopy Baryon acoustic oscillations large-scale structure of Universe Multipole expansion Cluster analysis [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ComputingMilieux_MISCELLANEOUS Astronomical observations |
| Zdroj: | Vargas-Magana, M, Ho, S, Xu, X, Sanchez, A G, O'Connell, R, Eisenstein, D J, Cuesta, A J, Percival, W J, Ross, A J, Aubourg, E, Brownstein, J R, Escoffier, S, Kirkby, D, Manera, M, Schneider, D P, Tinker, J L & Weaver, B A 2014, ' The clustering of galaxies in the SDSS-III baryon oscillation spectroscopic survey : potential systematics in fitting of baryon acoustic feature ', Monthly Notices of the Royal Astronomical Society, vol. 445, no. 1, pp. 2-28 . https://doi.org/10.1093/mnras/stu1681 Dipòsit Digital de la UB Universidad de Barcelona Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, 2014, 445 (1), pp.2-28. ⟨10.1093/mnras/stu1681⟩ Recercat. Dipósit de la Recerca de Catalunya instname Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2014, 445 (1), pp.2-28. ⟨10.1093/mnras/stu1681⟩ |
| ISSN: | 0035-8711 1365-2966 |
| DOI: | 10.1093/mnras/stu1681 |
| Popis: | Extraction of the Baryon Acoustic Oscillations (BAO) to per cent level accuracy is challenging and demands an understanding of many potential systematics to an accuracy well below 1 per cent, in order to ensure that they do not combine significantly when compared to statistical error of the BAO measurement. Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 11 (DR11) reaches a distance measurement with ∼1 per cent statistical error and this prompts an extensive search for all possible sub-per cent level systematic errors which could previously be safely ignored. In this paper, we analyse the potential systematics in BAO fitting methodology using mocks and data from BOSS DR10 and DR11. We demonstrate the robustness of the fiducial multipole fitting methodology to be at 0.1–0.2 per cent level with a wide range of tests in mock galaxy catalogues pre- and post-reconstruction. We also find the DR10 and DR11 data from BOSS to be robust against changes in methodology at a similar level. This systematic error budget is incorporated into the BOSS DR10 and DR11 BAO measurements. Of the wide range of changes we have investigated, we find that when fitting post-reconstructed data or mocks, the only change which has an effect >0.1 per cent on the best-fitting values of distance measurements is varying the order of the polynomials to describe the broad-band terms (∼0.2 per cent). Finally, we compare an alternative methodology denoted as Clustering Wedges with Multipoles, and find that it is consistent with the standard approach. |
| Databáze: | OpenAIRE |
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