24 documents found, page 1 of 3
Dark Energy Survey year 3 results: covariance modelling and its impact on param...
Friedrich, O.; Andrade-Oliveira, F. [UNESP]; Camacho, H. [UNESP]; Alves, O. [UNESP]; Rosenfeld, R. [UNESP]; Sanchez, J.; Fang, X.; Eifler, T. F.Made available in DSpace on 2022-04-29T08:36:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-12-01; We describe and test the fiducial covariance matrix model for the combined two-point function analysis of the Dark Energy Survey Year 3 (DES-Y3) data set. Using a variety of new ansatzes for covariance modelling and testing, we validate the assumptions and approximations of this model. These include the...
Dark Energy Survey Year 3 Results: Galaxy mock catalogs for BAO analysis
Ferrero, I.; Crocce, M.; Tutusaus, I.; Porredon, A.; Blot, L.; Fosalba, P.; Carnero Rosell, A.; Avila, S.; Izard, A.; Elvin-Poole, J.; Chan, K. C.Made available in DSpace on 2022-04-29T08:37:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-12-01; The calibration and validation of scientific analysis in simulations is a fundamental tool to ensure unbiased and robust results in observational cosmology. In particular, mock galaxy catalogs are a crucial resource to achieve these goals in the measurement of baryon acoustic oscillation (BAO) in the cl...
Dark energy survey year 3 results: Galaxy sample for BAO measurement
Rosell, A. Carnero; Rodriguez-Monroy, M.; Crocce, M.; Elvin-Poole, J.; Porredon, A.; Ferrero, I.; Mena-Fernández, J.; Cawthon, R.; De Vicente, J.Made available in DSpace on 2022-04-29T08:37:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); European Commission; European Research Council; Financiadora de Estudos e Projetos; Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ); High Energy Physics; Higher Education Funding Council for England; Institut de Fís...
Galaxy–galaxy lensing with the DES-CMASS catalogue: measurement and constraints...
Lee, S.; Troxel, M. A.; Choi, A.; Elvin-Poole, J.; Hirata, C.; Honscheid, K.; Huff, E. M.; MacCrann, N.; Ross, A. J.; Eifler, T. F.; Chang, C.Made available in DSpace on 2022-04-29T08:37:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-01; The DMASS sample is a photometric sample from the DES Year 1 data set designed to replicate the properties of the CMASS sample from BOSS, in support of a joint analysis of DES and BOSS beyond the small overlapping area. In this paper, we present the measurement of galaxy–galaxy lensing using the DMASS s...
Dark Energy Survey Year 3 results: Cosmology from cosmic shear and robustness t...
Secco, L. F.; Samuroff, S.; Krause, E.; Jain, B.; Blazek, J.; Raveri, M.; Campos, A.; Amon, A.; Chen, A.; Doux, C.; Choi, A.; Gruen, D.Made available in DSpace on 2022-04-29T08:39:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-15; This work and its companion paper, Amon et al. [Phys. Rev. D 105, 023514 (2022)PRVDAQ2470-001010.1103/PhysRevD.105.023514], present cosmic shear measurements and cosmological constraints from over 100 million source galaxies in the Dark Energy Survey (DES) Year 3 data. We constrain the lensing amplitude...
Dark Energy Survey Year 3 results: Cosmology from cosmic shear and robustness t...
Amon, A.; Gruen, D.; Troxel, M. A.; Maccrann, N.; Dodelson, S.; Choi, A.; Doux, C.; Secco, L. F.; Samuroff, S.; Krause, E.; Cordero, J.; Myles, J.Made available in DSpace on 2022-04-29T08:39:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-15; This work, together with its companion paper, Secco, Samuroff et al. [Phys. Rev. D 105, 023515 (2022)PRVDAQ2470-001010.1103/PhysRevD.105.023515], present the Dark Energy Survey Year 3 cosmic-shear measurements and cosmological constraints based on an analysis of over 100 million source galaxies. With th...
Dark Energy Survey Year 3 results: Cosmological constraints from galaxy cluster...
Abbott, T. M.C.; Aguena, M.; Alarcon, A.; Allam, S.; Alves, O. [UNESP]; Amon, A.; Andrade-Oliveira, F. [UNESP]; Annis, J.; Avila, S.; Bacon, D.Made available in DSpace on 2022-04-29T08:39:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-15; We present the first cosmology results from large-scale structure using the full 5000 deg2 of imaging data from the Dark Energy Survey (DES) Data Release 1. We perform an analysis of large-scale structure combining three two-point correlation functions (3×2pt): (i) cosmic shear using 100 million source ...
Dark Energy Survey Year 3 results: A 2.7% measurement of baryon acoustic oscill...
Abbott, T. M.C.; Aguena, M.; Allam, S.; Amon, A.; Andrade-Oliveira, F. [UNESP]; Asorey, J.; Avila, S.; Bernstein, G. M.; Bertin, E.; Brandao-Souza, A.Made available in DSpace on 2022-04-29T08:40:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-15; We present angular diameter measurements obtained by measuring the position of baryon acoustic oscillations (BAO) in an optimized sample of galaxies from the first three years of Dark Energy Survey data (DES Y3). The sample consists of 7 million galaxies distributed over a footprint of 4100 deg2 with 0....
Dark energy survey year 3 results: Cosmology with peaks using an emulator approach
Zürcher, D.; Fluri, J.; Sgier, R.; Kacprzak, T.; Gatti, M.; Doux, C.; Whiteway, L.; Réfrégier, A.; Chang, C.; Jeffrey, N.; Jain, B.; Lemos, P.Made available in DSpace on 2022-04-29T08:40:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-04-01; We constrain the matter density ωm and the amplitude of density fluctuations σ8 within the ΛCDM cosmological model with shear peak statistics and angular convergence power spectra using mass maps constructed from the first three years of data of the Dark Energy Survey (DES Y3). We use tomographic shear ...
Dark Energy Survey Year 3 results: Galaxy clustering and systematics treatment ...
Rodríguez-Monroy, M.; Weaverdyck, N.; Elvin-Poole, J.; Crocce, M.; Carnero Rosell, A.; Andrade-Oliveira, F. [UNESP]; Avila, S.; Bechtol, K.Made available in DSpace on 2022-04-29T08:40:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-04-01; In this work, we present the galaxy clustering measurements of the two DES lens galaxy samples: a magnitude-limited sample optimized for the measurement of cosmological parameters, maglim, and a sample of luminous red galaxies selected with the redmagic algorithm. maglim/redmagic sample contains over 10...