Sergio Rodríguez-Torres
Autonomous University of Madrid
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Monthly Notices of the Royal Astronomical Society | 2016
Chia-Hsun Chuang; Francisco Prada; Marcos Pellejero-Ibanez; Florian Beutler; Antonio J. Cuesta; Daniel J. Eisenstein; S. Escoffier; Shirley Ho; Francisco-Shu Kitaura; Jean-Paul Kneib; Marc Manera; Sebastián E. Nuza; Sergio Rodríguez-Torres; A. Ross; J. A. Rubiño-Martín; Lado Samushia; David J. Schlegel; Donald P. Schneider; Yuting Wang; Benjamin A. Weaver; Gong-Bo Zhao; Joel R. Brownstein; Kyle S. Dawson; Claudia Maraston; Matthew D. Olmstead; Daniel Thomas
Citation: Chuang, C. H., Prada, F., Pellejero-Ibanez, M., Beutler, F., Cuesta, A. J., Eisenstein, D. J., . . . Thomas, D. (2016). The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Single-probe measurements from CMASS anisotropic galaxy clustering. Monthly Notices of the Royal Astronomical Society, 461(4), 3781-3793. doi:10.1093/mnras/stw1535
Nature Astronomy | 2017
Gong-Bo Zhao; Marco Raveri; Levon Pogosian; Yuting Wang; Robert Crittenden; Will J. Handley; Will J. Percival; Florian Beutler; Jonathan Brinkmann; Chia-Hsun Chuang; Antonio J. Cuesta; Daniel J. Eisenstein; Francisco-Shu Kitaura; Kazuya Koyama; Benjamin L’Huillier; Robert C. Nichol; Matthew M. Pieri; Sergio Rodríguez-Torres; A. Ross; Graziano Rossi; Ariel G. Sánchez; Arman Shafieloo; Jeremy L. Tinker; Rita Tojeiro; Jose Alberto Vazquez; H. Y. Zhang
A flat Friedmann–Robertson–Walker universe dominated by a cosmological constant (Λ) and cold dark matter (CDM) has been the working model preferred by cosmologists since the discovery of cosmic acceleration1,2. However, tensions of various degrees of significance are known to be present among existing datasets within the ΛCDM framework3–11. In particular, the Lyman-α forest measurement of the baryon acoustic oscillations (BAO) by the Baryon Oscillation Spectroscopic Survey3 prefers a smaller value of the matter density fraction ΩM than that preferred by cosmic microwave background (CMB). Also, the recently measured value of the Hubble constant, H0 = 73.24 ± 1.74 km s−1 Mpc−1 (ref. 12), is 3.4σ higher than the 66.93 ± 0.62 km s−1 Mpc−1 inferred from the Planck CMB data7. In this work, we investigate whether these tensions can be interpreted as evidence for a non-constant dynamical dark energy. Using the Kullback–Leibler divergence13 to quantify the tension between datasets, we find that the tensions are relieved by an evolving dark energy, with the dynamical dark energy model preferred at a 3.5σ significance level based on the improvement in the fit alone. While, at present, the Bayesian evidence for the dynamical dark energy is insufficient to favour it over ΛCDM, we show that, if the current best-fit dark energy happened to be the true model, it would be decisively detected by the upcoming Dark Energy Spectroscopic Instrument survey14.Recent observations reveal tension between various cosmological probes. Assuming dark energy to be non-constant, depending on redshift, may relieve this tension. The Dark Energy Spectroscopic Instrument survey will be able to confirm this result.
Monthly Notices of the Royal Astronomical Society | 2017
A. Ross; Florian Beutler; Chia-Hsun Chuang; Marcos Pellejero-Ibanez; Hee-Jong Seo; Mariana Vargas-Magaña; Antonio J. Cuesta; Will J. Percival; A. Burden; Ariel G. Sánchez; Jan Niklas Grieb; Beth Reid; Joel R. Brownstein; Kyle S. Dawson; Daniel J. Eisenstein; Shirley Ho; Francisco-Shu Kitaura; Robert C. Nichol; Matthew D. Olmstead; Francisco Prada; Sergio Rodríguez-Torres; Shun Saito; Salvador Salazar-Albornoz; Donald P. Schneider; Daniel Thomas; Jeremy L. Tinker; Rita Tojeiro; Yuting Wang; Martin White; Gong-Bo Zhao
We present baryon acoustic oscillation (BAO) scale measurements determined from the clustering of 1.2 million massive galaxies with redshifts 0.2 < z < 0.75 distributed over 9300 deg(2), as quantified by their redshift-space correlation function. In order to facilitate these measurements, we define, describe, and motivate the selection function for galaxies in the final data release (DR12) of the SDSS III Baryon Oscillation Spectroscopic Survey (BOSS). This includes the observational footprint, masks for image quality and Galactic extinction, and weights to account for density relationships intrinsic to the imaging and spectroscopic portions of the survey. We simulate the observed systematic trends in mock galaxy samples and demonstrate that they impart no bias on BAO scale measurements and have a minor impact on the recovered statistical uncertainty. We measure transverse and radial BAO distance measurements in 0.2 < z < 0.5, 0.5 < z < 0.75, and (overlapping) 0.4 < z < 0.6 redshift bins. In each redshift bin, we obtain a precision that is 2.7 per cent or better on the radial distance and 1.6 per cent or better on the transverse distance. The combination of the redshift bins represents 1.8 per cent precision on the radial distance and 1.1 per cent precision on the transverse distance. This paper is part of a set that analyses the final galaxy clustering data set from BOSS. The measurements and likelihoods presented here are combined with others in Alam et al. to produce the final cosmological constraints from BOSS.
Monthly Notices of the Royal Astronomical Society | 2017
Florian Beutler; Hee-Jong Seo; Shun Saito; Chia-Hsun Chuang; Antonio J. Cuesta; Daniel J. Eisenstein; Héctor Gil-Marín; Jan Niklas Grieb; Nick Hand; Francisco-Shu Kitaura; Chirag Modi; Robert C. Nichol; Matthew D. Olmstead; Will J. Percival; Francisco Prada; Ariel G. Sánchez; Sergio Rodríguez-Torres; A. Ross; Nicholas P. Ross; Donald P. Schneider; Jeremy Tinker; Rita Tojeiro; Mariana Vargas-Magaña
We investigate the anisotropic clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 12 sample, which consists of 1198 006 galaxies in the redshift range 0.2 < z < 0.75 and a sky coverage of 10 252 deg(2). We analyse this data set in Fourier space, using the power-spectrum multipoles to measure redshift-space distortions simultaneously with the Alcock-Paczynski effect and the baryon acoustic oscillation scale. We include the power-spectrum monopole, quadrupole and hexadecapole in our analysis and compare our measurements with a perturbation-theory-based model, while properly accounting for the survey window function. To evaluate the reliability of our analysis pipeline, we participate in a mock challenge, which results in systematic uncertainties significantly smaller than the statistical uncertainties. While the high-redshift constraint on f sigma(8) at z(eff) = 0.61 indicates a small (similar to 1.4 sigma) deviation from the prediction of the Planck Lambda CDM (Lambda cold dark matter) model, the low-redshift constraint is in good agreement with Planck Lambda CDM. This paper is part of a set that analyses the final galaxy clustering data set from BOSS. The measurements and likelihoods presented here are combined with others in Alam et al. to produce the final cosmological constraints from BOSS.
Monthly Notices of the Royal Astronomical Society | 2016
Francisco-Shu Kitaura; Sergio Rodríguez-Torres; Chia-Hsun Chuang; Cheng Zhao; Francisco Prada; Héctor Gil-Marín; Hong Guo; Gustavo Yepes; Anatoly Klypin; Claudia G. Scóccola; Jeremy L. Tinker; Cameron K. McBride; Beth Reid; Ariel G. Sánchez; Salvador Salazar-Albornoz; Jan Niklas Grieb; Mariana Vargas-Magaña; Antonio J. Cuesta; Florian Beutler; Johan Comparat; Will J. Percival; A. Ross
We reproduce the galaxy clustering catalogue from the SDSS-III Baryon Oscillation Spectroscopic Survey Final Data Release (BOSS DR11&DR12) with high fidelity on all relevant scales in order to allow a robust analysis of baryon acoustic oscillations and redshift space distortions. We have generated (6000) 12 288 MultiDark PATCHY BOSS (DR11) DR12 light cones corresponding to an effective volume of similar to 192 000 [h(-1) Gpc](3) (the largest ever simulated volume), including cosmic evolution in the redshift range from 0.15 to 0.75. The mocks have been calibrated using a reference galaxy catalogue based on the halo abundance matching modelling of the BOSS DR11&DR12 galaxy clustering data and on the data themselves. The production follows three steps. First, we apply the PATCHY code to generate a dark matter field and an object distribution including non-linear stochastic galaxy bias. Secondly, we run the halo/stellar distribution reconstruction HADRON code to assign masses to the various objects. This step uses the mass distribution as a function of local density and non-local indicators (i.e. tidal field tensor eigenvalues and relative halo exclusion separation for massive objects) from the reference simulation applied to the corresponding patchy dark matter and galaxy distribution. Finally, we apply the SUGAR code to build the light cones. The resulting MultiDarkPATCHY mock light cones reproduce the number density, selection function, survey geometry, and in general within 1 sigma, for arbitrary stellar mass bins, the power spectrum up to k = 0.3 h Mpc(-1), the two-point correlation functions down to a few Mpc scales, and the three-point statistics of the BOSS DR11&DR12 galaxy samples.
Monthly Notices of the Royal Astronomical Society | 2016
Sergio Rodríguez-Torres; Chia-Hsun Chuang; Francisco Prada; Hong Guo; Anatoly Klypin; Peter Behroozi; Chang Hoon Hahn; Johan Comparat; Gustavo Yepes; Antonio D. Montero-Dorta; Joel R. Brownstein; Claudia Maraston; Cameron K. McBride; Jeremy L. Tinker; Stefan Gottlöber; Ginevra Favole; Yiping Shu; Francisco-Shu Kitaura; Adam S. Bolton; Roman Scoccimarro; Lado Samushia; David J. Schlegel; Donald P. Schneider; Daniel Thomas
Citation: Rodriguez-Torres, S. A., Chuang, C. H., Prada, F., Guo, H., Klypin, A., Behroozi, P., . . . Thomas, D. (2016). The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: modelling the clustering and halo occupation distribution of BOSS CMASS galaxies in the Final Data Release. Monthly Notices of the Royal Astronomical Society, 460(2), 1173-1187. doi:10.1093/mnras/stw1014
Monthly Notices of the Royal Astronomical Society | 2017
Héctor Gil-Marín; Will J. Percival; Licia Verde; Joel R. Brownstein; Chia-Hsun Chuang; Francisco-Shu Kitaura; Sergio Rodríguez-Torres; Matthew D. Olmstead
We measure and analyse the bispectrum of the final, Data Release 12, galaxy sample provided by the Baryon Oscillation Spectroscopic Survey, splitting by selection algorithm into LOWZ and CMASS galaxies. The LOWZ sample contains 361\,762 galaxies with an effective redshift of
Monthly Notices of the Royal Astronomical Society | 2017
Ariel G. Sánchez; Roman Scoccimarro; M. Crocce; Jan Niklas Grieb; Salvador Salazar-Albornoz; Claudio Dalla Vecchia; Martha Lippich; Florian Beutler; Joel R. Brownstein; Chia-Hsun Chuang; Daniel J. Eisenstein; Francisco-Shu Kitaura; Matthew D. Olmstead; Will J. Percival; Francisco Prada; Sergio Rodríguez-Torres; A. Ross; Lado Samushia; Hee-Jong Seo; Jeremy Tinker; Rita Tojeiro; Mariana Vargas-Magaña; Yuting Wang; Gong-Bo Zhao
z_{\rm LOWZ}=0.32
Monthly Notices of the Royal Astronomical Society | 2017
Alexie Leauthaud; Shun Saito; Stefan Hilbert; Alexandre Barreira; Surhud More; Martin White; Shadab Alam; Peter Behroozi; Kevin Bundy; Jean Coupon; Thomas Erben; Catherine Heymans; Hendrik Hildebrandt; Rachel Mandelbaum; Lance Miller; Bruno Moraes; Maria E. S. Pereira; Sergio Rodríguez-Torres; Fabian Schmidt; Huanyuan Shan; Matteo Viel; Francisco Villaescusa-Navarro
, and the CMASS sample 777\,202 galaxies with an effective redshift of
Monthly Notices of the Royal Astronomical Society | 2017
Jan Niklas Grieb; Ariel G. Sánchez; Salvador Salazar-Albornoz; Roman Scoccimarro; M. Crocce; Claudio Dalla Vecchia; Francesco Montesano; Héctor Gil-Marín; A. Ross; Florian Beutler; Sergio Rodríguez-Torres; Chia-Hsun Chuang; Francisco Prada; Francisco-Shu Kitaura; Antonio J. Cuesta; Daniel J. Eisenstein; Will J. Percival; Mariana Vargas-Magaña; Jeremy Tinker; Rita Tojeiro; Joel R. Brownstein; Claudia Maraston; Robert C. Nichol; Matthew D. Olmstead; Lado Samushia; Hee-Jong Seo; Alina Streblyanska; Gong-Bo Zhao
z_{\rm CMASS}=0.57