Статья

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: tomographic BAO analysis of DR12 combined sample in configuration space

Yuting WangInstitute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UKGong‐Bo ZhaoInstitute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UKChia-Hsun ChuangLeibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, GermanyA.J. RossCenter for Cosmology and AstroParticle Physics, The Ohio State University, Columbus, OH 43210, USAWill J. PercivalInstitute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UKHéctor Gil-MarínInstitute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UKAntonio J. CuestaInstitut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC- UB), Martí i Franquès 1, E-08028 Barcelona, SpainFrancisco-Shu KitauraLeibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, GermanySergio Rodriguez-TorresDepartamento de Física Teórica, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, SpainJoel R. BrownsteinDepartment of Physics and Astronomy, University of Utah, 115 S 1400 E, Salt Lake City, UT 84112, USADaniel J. EisensteinHarvard–Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USAShirley HoDepartment of Physics, University of California, Berkeley, CA 94720, USAJean‐Paul KneibLaboratoire d'Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, SwitzerlandMatthew D. OlmsteadDepartment of Chemistry and Physics, King's College, 133 North River St, Wilkes Barre, PA 18711, USAFrancisco PradaCampus of International Excellence UAM+CSIC, Cantoblanco, E-28049 Madrid, SpainGraziano RossiDepartment of Astronomy and Space Science, Sejong University, Seoul 143-747, KoreaAriel G. SánchezMax-Planck-Institut für extraterrestrische Physik, Postfach 1312, Giessenbachstr., D-85741 Garching, GermanySalvador Salazar-AlbornozMax-Planck-Institut für extraterrestrische Physik, Postfach 1312, Giessenbachstr., D-85741 Garching, GermanyD. ThomasInstitute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UKJeremy L. TinkerCenter for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USARita TojeiroSchool of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UKM. Vargas-MagañaInstituto de Fisica, Universidad Nacional Autonoma de Mexico, Apdo. Postal 20-364, MexicoFangzhou ZhuDepartment of Physics, Yale University, New Haven, CT 06511, USA

2017en

ABI

Аннотация

We perform a tomographic baryon acoustic oscillations (BAOs) analysis using the two-point galaxy correlation function measured from the combined sample of Baryon Oscillation Spectroscopic Survey Data Release 12 (BOSS DR12), which covers the redshift range of 0.2 < z < 0.75. Upon splitting the sample into multiple overlapping redshift slices to extract the redshift information of galaxy clustering, we obtain a measurement of D-A(z)/r(d) and H(z)r(d) at nine effective redshifts with the full covariance matrix calibrated using MultiDark-Patchy mock catalogues. Using the reconstructed galaxy catalogues, we obtain the precision of 1.3-2.2 per cent for D-A(z)/r(d) and 2.1-6.0 per cent for H(z)r(d.) To quantify the gain from the tomographic information, we compare the constraints on the cosmological parameters using our nine-bin BAO measurements, the consensus three-bin BAO and redshift space distortion measurements at three effective redshifts in Alam et al., and the non-tomographic (one-bin) BAO measurement at a single effective redshift. Comparing the nine-bin with one-bin constraint result, it can improve the dark energy Figure of Merit by a factor of 1.24 for the Chevallier-Polarski-Linder parametrization for equation-of-state parameter w(DE). The errors of w(0) and w(a) from nine-bin constraints are slightly improved when compared to the three-bin constraint result.

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Идентификаторы

DOI: 10.1093/mnras/stx1090

Цитирования и источники

Цитирований: 2Использованных источников: 0

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