Authors: Kitaura, Francisco-Shu; Gil Marín, Héctor; Scoccola, Claudia Graciela; Chuang, Chia-Hsun; Müller, Volker; Yepes, Gustavo; Prada, Francisco
Publication Date: 2015.
Language: English.
Abstract:
We present a method to produce mock galaxy catalogues with efficient perturbation theory schemes, which match the number density, power spectra and bispectra in real and in redshift space from N-body simulations. The essential contribution of this work is the way in which we constrain the bias parameters of the PATCHY-code. In addition to aiming at reproducing the two-point statistics, we seek the set of bias parameters, which constrain the univariate halo probability distribution function (PDF) encoding higher order correlation functions. We demonstrate that halo catalogues based on the same underlying dark matter field with a fix halo number density, and accurately matching the power spectrum (within 2 per cent) can lead to very different bispectra depending on the adopted halo bias model. A model ignoring the shape of the halo PDF can lead to deviations up to factors of 2. The catalogues obtained additionally constraining the shape of the halo PDF can significantly lower the discrepancy in the three-point statistics, yielding closely unbiased bispectra both in real and in redshift space; which are in general compatible with those corresponding to an N-body simulation within 10 per cent (deviating at most up to 20 per cent). Our calculations show that the constant linear bias of ~2 for luminous red galaxy (LRG) like galaxies found in the power spectrum, mainly comes from sampling haloes in high-density peaks, choosing a high-density threshold rather than from a factor multiplying the dark matter density field. Our method contributes towards an efficient modelling of the halo/galaxy distribution required to estimate uncertainties in the clustering measurements from galaxy redshift surveys. We have also demonstrated that it represents a powerful tool to test various bias models.
Author affiliation: Kitaura, Francisco-Shu. Leibniz-Institut fur Astrophysik Potsdam; Alemania
Author affiliation: Gil Marín, Héctor. University of Portsmouth; Reino Unido
Author affiliation: Scoccola, Claudia Graciela. Instituto de Astrofısica de Canarias; España. Universidad de La Laguna; España. Universidad Autónoma de Madrid; España
Author affiliation: Chuang, Chia-Hsun. Universidad Autónoma de Madrid; España
Author affiliation: Müller, Volker. Leibniz-Institut fur Astrophysik Potsdam; Alemania
Author affiliation: Yepes, Gustavo. Universidad Autónoma de Madrid; España
Author affiliation: Prada, Francisco. Consejo Superior de Investigaciones Científicas; España
Repository: CONICET Digital (CONICET). Consejo Nacional de Investigaciones Científicas y Técnicas
Authors: Prada, Francisco; Scoccola, Claudia Graciela; Chuang, Chia-Hsun; Yepes, Gustavo; Klypin, Anatoly A.; Kitaura, Francisco-Shu; Gottlöber, Stefan; Zhao, Cheng
Publication Date: 2016.
Language: English.
Abstract:
Future dark energy experiments will require accurate theoretical predictions for the baryon acoustic oscillations (BAOs). Here, we use large N-body simulations to study any systematic shifts and damping in BAO due to non-linear effects. The impact of cosmic variance is largely reduced by dividing the tracer power spectrum by that from a 'BAO-free' simulation starting with the same random amplitudes and phases. The accuracy of our simulations allows us to resolve well dark matter (sub)haloes, which permits us to study with high accuracy (better than 0.02 per cent for dark matter and 0.07 per cent for low-bias haloes) small BAO shifts α towards larger k, and non-linear damping σnl of BAO in the power spectrum. For dark matter, we provide an accurate parametrization of the evolution of α as a function of the linear growth factor D(z). For halo samples, with bias from 1.2 to 2.8, we measure a typical BAO shift of ≈0.25 per cent, with no appreciable evolution with redshift. Moreover, we report a constant shift as a function of halo bias. We find a different evolution of the BAO damping in all halo samples as compared to dark matter with haloes suffering less damping, and also find some weak dependence on bias. Larger BAO shift and damping are measured in redshift-space, which can be explained by linear theory due to redshift-space distortions. A clear modulation in phase with the acoustic scale is observed in the scale-dependent halo bias due to the presence of BAOs. We compare our results with previous works.
Author affiliation: Prada, Francisco. Consejo Superior de Investigaciones Científicas; España. Universidad Autónoma de Madrid; España
Author affiliation: Scoccola, Claudia Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Superior de Investigaciones Científicas; España. Universidad Autónoma de Madrid; España. Instituto de Astrofisica de Canarias ; España. Universidad de La Laguna; España. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Author affiliation: Chuang, Chia-Hsun. Consejo Superior de Investigaciones Científicas; España. Universidad Autónoma de Madrid; España
Author affiliation: Yepes, Gustavo. Universidad Autónoma de Madrid; España
Author affiliation: Klypin, Anatoly A.. University of New Mexico; Estados Unidos
Author affiliation: Kitaura, Francisco-Shu. Leibniz-Institut fuer Astrophysik; Alemania
Author affiliation: Gottlöber, Stefan. Leibniz-Institut fuer Astrophysik; Alemania
Author affiliation: Zhao, Cheng. Tsinghua University; China
Repository: CONICET Digital (CONICET). Consejo Nacional de Investigaciones Científicas y Técnicas
Authors: Reid, Beth; Ho, Shirley; Padmanabhan, Nikhil; Percival, Will J.; Tinker, Jeremy; Tojeiro, Rita; White, Martin; Eisenstein, Daniel J.; Maraston, Claudia; Ross, Ashley J.; Sánchez, Ariel G.; Schlegel, David; Sheldon, Erin; Strauss, Michael; Thomas, Daniel; Wake, David; Beutler, Florian; Bizyaev, Dmitri; Bolton, Adam; Brownstein, Joel; Chuang, Chia-Hsun; Dawson, Kyle; Harding, Paul; Kitaura, Francisco-Shu; Leauthaud, Alexie; Masters, Karen; McBride, Cameron; More, Surhud; Olmstead, Matthew; Oravetz, David; Nuza, Sebastian; Pan, Kaike; Parejko, John; Pforr, Janine; Prada, Francisco; Rodríguez Torres, Sergio; Salazar Albornoz, Salvador; Samushia, Lado; Schneider, Donald; Scóccola, Claudia Graciela; Simmons, Audrey; Vargas Magana, Mariana
Publication Date: 2016.
Language: English.
Abstract:
The Baryon Oscillation Spectroscopic Survey (BOSS), part of the Sloan Digital Sky Survey (SDSS) III project, has provided the largest survey of galaxy redshifts available to date, in terms of both the number of galaxy redshifts measured by a single survey, and the effective cosmological volume covered. Key to analysing the clustering of these data to provide cosmological measurements is understanding the detailed properties of this sample. Potential issues include variations in the target catalogue caused by changes either in the targeting algorithm or properties of the data used, the pattern of spectroscopic observations, the spatial distribution of targets for which redshifts were not obtained, and variations in the target sky density due to observational systematics. We document here the target selection algorithms used to create the galaxy samples that comprise BOSS. We also present the algorithms used to create large-scale structure catalogues for the final Data Release (DR12) samples and the associated random catalogues that quantify the survey mask. The algorithms are an evolution of those used by the BOSS team to construct catalogues from earlier data, and have been designed to accurately quantify the galaxy sample. The code used, designated MKSAMPLE, is released with this paper.
Facultad de Ciencias Astronómicas y Geofísicas
Keywords: Ciencias Agrarias.
Repository: SEDICI (UNLP). Universidad Nacional de La Plata
Authors: Kitaura, Francisco-Shu; Rodriguez Torres, Sergio A.; Chuang, Chia Hsun; Zhao, Cheng; Prada, Francisco; Gil Marín, Héctor; Guo, Hong; Yepes, Gustavo; Klypin, Anatoly; Scoccola, Claudia Graciela; Tinker, Jeremy; McBride, Cameron; Reid, Beth; Sánchez, Ariel G.; Salazar Albornoz, Salvador; Grieb, Jan Niklas; Vargas Magana, Mariana; Cuesta, Antonio J.; Neyrinck, Mark; Beutler, Florian; Comparat, Johan; Percival, Will J.; Ross, Ashley
Publication Date: 2016.
Language: English.
Abstract:
We reproduce the galaxy clustering catalogue from the SDSS-III Baryon Oscillation Spectroscopic Survey Final Data Release (BOSS DR11 and 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 ~ 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 and 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 1s, 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 and DR12 galaxy samples.
Author affiliation: Kitaura, Francisco-Shu. Leibniz-Institut für Astrophysik Potsdam; Alemania
Author affiliation: Rodriguez Torres, Sergio A.. Universidad Autónoma de Madrid; España. Consejo Superior de Investigaciones Científicas; España
Author affiliation: Chuang, Chia Hsun. Universidad Autónoma de Madrid; España. Consejo Superior de Investigaciones Científicas; España
Author affiliation: Zhao, Cheng. Tsinghua University; China
Author affiliation: Prada, Francisco. Consejo Superior de Investigaciones Científicas; España. Universidad Autónoma de Madrid; España
Author affiliation: Gil Marín, Héctor. University of Portsmouth; Reino Unido
Author affiliation: Guo, Hong. State University of Utah; Estados Unidos. Shanghai Astronomical Observatory; China
Author affiliation: Yepes, Gustavo. Universidad Autónoma de Madrid. Facultad de Ciencias; España
Author affiliation: Klypin, Anatoly. Universidad Autónoma de Madrid; España. Consejo Superior de Investigaciones Científicas; España. New Mexico State University; Estados Unidos
Author affiliation: Scoccola, Claudia Graciela. Universidad Autónoma de Madrid; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Instituto de Astrof{isica de Canarias; España. Universidad de La Laguna; España
Author affiliation: Tinker, Jeremy. University of New York; Estados Unidos
Author affiliation: McBride, Cameron. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Author affiliation: Reid, Beth. Lawrence Berkeley National Laboratory; Estados Unidos. University of California at Berkeley; Estados Unidos
Author affiliation: Sánchez, Ariel G.. Max Planck Institut für Extraterrestrische Physik; Alemania
Author affiliation: Salazar Albornoz, Salvador. Max Planck Institut für Extraterrestrische Physik; Alemania. Ludwig Maximilians Universitat; Alemania
Author affiliation: Grieb, Jan Niklas. Max Planck Institut für Extraterrestrische Physik; Alemania. Ludwig Maximilians Universitat; Alemania
Author affiliation: Vargas Magana, Mariana. Universidad Nacional Autónoma de México; México
Author affiliation: Cuesta, Antonio J.. Universidad de Barcelona; España
Author affiliation: Neyrinck, Mark. University Johns Hopkins; Estados Unidos
Author affiliation: Beutler, Florian. Lawrence Berkeley National Laboratory; Estados Unidos
Author affiliation: Comparat, Johan. Universidad Autónoma de Madrid; España. Consejo Superior de Investigaciones Científicas; España
Author affiliation: Percival, Will J.. University of Portsmouth; Reino Unido
Author affiliation: Ross, Ashley. Ohio State University; Estados Unidos. University of Portsmouth; Reino Unido
Repository: CONICET Digital (CONICET). Consejo Nacional de Investigaciones Científicas y Técnicas
Authors: Chuang, Chia-Hsun; Prada, Francisco; Pellejero Ibanez, Marcos; Beutler, Florian; Cuesta, Antonio; Eisenstein, Daniel J.; Escoffier, Stephanie; Ho, Shirley; Kitaura, Francisco-Shu; Kneib, Jean Paul; Manera, Marc; Nuza, Sebastian Ernesto; Rodriguez Torres, Sergio A.; Ross, Ashley; Rubiño Martín, J. A.; Samushia, Lado; Schlegel, David J.; Schneider, Donald P.; Wang, Yuting; Weaber, Benjamin A.; Zao, Gongbo; Brownstein, Joel R.; Dawson, Kyle S.; Maraston, Claudia; Olmestead, Matthew D.; Thomas, Daniel
Publication Date: 2016.
Language: English.
Abstract:
With the largest spectroscopic galaxy survey volume drawn from the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS), we can extract cosmological constraints from the measurements of redshift and geometric distortions at quasi-linear scales (e.g. above 50 h−1 Mpc). We analyse the broad-range shape of the monopole and quadrupole correlation functions of the BOSS Data Release 12 (DR12) CMASS galaxy sample, at the effective redshift z = 0.59, to obtain constraints on the Hubble expansion rate H(z), the angular- diameter distance DA(z), the normalized growth rate f(z)σ8(z), and the physical matter density Ωm h2. We obtain robust measurements by including a polynomial as the model for the systematic errors, and find it works very well against the systematic effects, e.g. ones induced by stars and seeing. We provide accurate measurements {DA(0.59)rs,fid/rs, H(0.59)rs/rs,fid, f(0.59)σ8(0.59), Ωm h2} = {1427 ± 26 Mpc, 97.3 ± 3.3 km s−1 Mpc−1, 0.488 ± 0.060, 0.135 ± 0.016}, where rs is the comoving sound horizon at the drag epoch and rs,fid = 147.66 Mpc is the sound scale of the fiducial cosmology used in this study. The parameters which are not well constrained by our galaxy clustering analysis are marginalized over with wide flat priors. Since no priors from other data sets, e.g. cosmic microwave background (CMB), are adopted and no dark energy models are assumed, our results from BOSS CMASS galaxy clustering alone may be combined with other data sets, i.e. CMB, SNe, lensing or other galaxy clustering data to constrain the parameters of a given cosmological model. The uncertainty on the dark energy equation of state parameter, w, from CMB+CMASS is about 8 per cent. The uncertainty on the curvature fraction, Ωk, is 0.3 per cent. We do not find deviation from flat ΛCDM.
Author affiliation: Chuang, Chia-Hsun. Universidad Autónoma de Madrid; España
Author affiliation: Prada, Francisco. Universidad Autónoma de Madrid; España
Author affiliation: Pellejero Ibanez, Marcos. Instituto de Astrofísica de Canarias; España
Author affiliation: Beutler, Florian. Lawrence Berkeley National Lab,; Estados Unidos
Author affiliation: Cuesta, Antonio. Universidad de Barcelona; España
Author affiliation: Eisenstein, Daniel J.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Author affiliation: Escoffier, Stephanie. Aix-Marseille Universite,; Francia
Author affiliation: Ho, Shirley. Carnegie Mellon University; Estados Unidos
Author affiliation: Kitaura, Francisco-Shu. Leibniz-Institut fur Astrophysik Potsdam; Alemania
Author affiliation: Kneib, Jean Paul. Aix Marseille Universite,; Francia
Author affiliation: Manera, Marc. University College London,; Reino Unido
Author affiliation: Nuza, Sebastian Ernesto. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Author affiliation: Rodriguez Torres, Sergio A.. Universidad Autónoma de Madrid; España
Author affiliation: Ross, Ashley. Ohio State University; Estados Unidos
Author affiliation: Rubiño Martín, J. A.. Instituto de Astrof´ısica de Canarias; España
Author affiliation: Samushia, Lado. Kansas State University; Estados Unidos
Author affiliation: Schlegel, David J.. Lawrence Berkeley National Laboratory; Estados Unidos
Author affiliation: Schneider, Donald P.. State University Of Pennsylvania; Estados Unidos
Author affiliation: Wang, Yuting. National Astronomy Observatories; China
Author affiliation: Weaber, Benjamin A.. University of New York; Estados Unidos
Author affiliation: Zao, Gongbo. National Astronomy Observatories; China
Author affiliation: Brownstein, Joel R.. University of Utah; Estados Unidos
Author affiliation: Dawson, Kyle S.. University of Utah; Estados Unidos
Author affiliation: Maraston, Claudia. University of Portsmouth; Reino Unido
Author affiliation: Olmestead, Matthew D.. King’s College; Estados Unidos
Author affiliation: Thomas, Daniel. University of Portsmouth; Reino Unido
Repository: CONICET Digital (CONICET). Consejo Nacional de Investigaciones Científicas y Técnicas
Authors: Chuang, Chia Hsun; Zhao, Cheng; Prada, Francisco; Munari, Emiliano; Avila, Santiago; Izard, Albert; Kitaura, Francisco Shu; Manera, Marc; Monaco, Pierluigi; Murray, Steven; Knebe, Alexander; Scoccola, Claudia Graciela; Yepes, Gustavo; Garcia Bellido, Juan; Marín, Felipe A.; Müller, Volker; Skibba, Ramin; Crocce, Martin; Fosalba, Pablo; Gottlöber, Stefan; Klypin, Anatoly A.; Power, Chris; Tao, Charling; Turchaninov, Victor
Publication Date: 2015.
Language: English.
Abstract:
We present a comparison of major methodologies of fast generating mock halo or galaxy catalogues. The comparison is done for two-point (power spectrum and two-point correlation function in real and redshift space), and the three-point clustering statistics (bispectrum and three-point correlation function). The reference catalogues are drawn from the BigMultiDark N-body simulation. Both friend-of-friends (including distinct haloes only) and spherical overdensity (including distinct haloes and subhalos) catalogues have been used with the typical number density of a large volume galaxy surveys. We demonstrate that a proper biasing model is essential for reproducing the power spectrum at quasi-linear and even smaller scales. With respect to various clustering statistics, a methodology based on perturbation theory and a realistic biasing model leads to very good agreement with N-body simulations. However, for the quadrupole of the correlation function or the power spectrum, only the method based on semi-N-body simulation could reach high accuracy (1 per cent level) at small scales, i.e. r < 25 h-1 Mpc or k > 0.15 h Mpc-1. Full N-body solutions will remain indispensable to produce reference catalogues. Nevertheless, we have demonstrated that the more efficient approximate solvers can reach a few per cent accuracy in terms of clustering statistics at the scales interesting for the large-scale structure analysis. This makes them useful for massive production aimed at covariance studies, to scan large parameter spaces, and to estimate uncertainties in data analysis techniques, such as baryon acoustic oscillation reconstruction, redshift distortion measurements, etc.
Author affiliation: Chuang, Chia Hsun. Universidad Autónoma de Madrid; España. Consejo Superior de Investigaciones Científicas; España
Author affiliation: Zhao, Cheng. Tsinghua University; China
Author affiliation: Prada, Francisco. Consejo Superior de Investigaciones Científicas; España. Universidad Autónoma de Madrid; España
Author affiliation: Munari, Emiliano. Università degli Studi di Trieste; Italia. Istituto Nazionale di Astrofisica. Osservatorio astronomico di Trieste; Italia
Author affiliation: Avila, Santiago. Consejo Superior de Investigaciones Científicas; España. Universidad Autónoma de Madrid; España
Author affiliation: Izard, Albert. Consejo Superior de Investigaciones Científicas; España. Universitat Autònoma de Barcelona; España
Author affiliation: Kitaura, Francisco Shu. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania
Author affiliation: Manera, Marc. University College London; Reino Unido
Author affiliation: Monaco, Pierluigi. Università degli Studi di Trieste; Italia. Istituto Nazionale di Astrofisica. Osservatorio astronomico di Trieste; Italia
Author affiliation: Murray, Steven. University of Western Australia; Australia. ARC Centre of Excellence for All-Sky Astrophysics; Australia
Author affiliation: Knebe, Alexander. Universidad Autónoma de Madrid; España
Author affiliation: Scoccola, Claudia Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina
Author affiliation: Yepes, Gustavo. Universidad Autónoma de Madrid; España
Author affiliation: Garcia Bellido, Juan. Universidad Autónoma de Madrid; España
Author affiliation: Marín, Felipe A.. University of Technology; Australia. Consejo Superior de Investigaciones Científicas; España
Author affiliation: Müller, Volker. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania
Author affiliation: Skibba, Ramin. University of California; Estados Unidos
Author affiliation: Crocce, Martin. Universitat Autònoma de Barcelona; España
Author affiliation: Fosalba, Pablo. Universitat Autònoma de Barcelona; España
Author affiliation: Gottlöber, Stefan. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania
Author affiliation: Klypin, Anatoly A.. New Mexico State University; Estados Unidos
Author affiliation: Power, Chris. University of Western Australia; Australia. ARC Centre of Excellence for All-Sky Astrophysics; Australia
Author affiliation: Tao, Charling. Tsinghua University; China. Universite Aix-Marseille; Francia. Centre National de la Recherche Scientifique; Francia
Author affiliation: Turchaninov, Victor. Russian Academy of Sciences; Rusia
Repository: CONICET Digital (CONICET). Consejo Nacional de Investigaciones Científicas y Técnicas