9 documents found, page 1 of 1
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 1 results: Cosmological constraints from galaxy cluster...
Abbott, T. M.C.; Abdalla, F. B.; Alarcon, A.; Aleksić, J.; Allam, S.; Allen, S.; Amara, A.; Annis, J.; Asorey, J.; Avila, S.; Bacon, D.; Balbinot, E.Made available in DSpace on 2022-04-29T08:27:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-08-15; We present cosmological results from a combined analysis of galaxy clustering and weak gravitational lensing, using 1321 deg2 of griz imaging data from the first year of the Dark Energy Survey (DES Y1). We combine three two-point functions: (i) the cosmic shear correlation function of 26 million source ...
Cosmological Constraints from Multiple Probes in the Dark Energy Survey
Abbott, T. M.C.; Alarcon, A.; Allam, S.; Andersen, P.; Andrade-Oliveira, F. [UNESP]; Annis, J.; Asorey, J.; Avila, S.; Bacon, D.; Banik, N.Made available in DSpace on 2022-04-29T08:28:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-05-01; The combination of multiple observational probes has long been advocated as a powerful technique to constrain cosmological parameters, in particular dark energy. The Dark Energy Survey has measured 207 spectroscopically confirmed type Ia supernova light curves, the baryon acoustic oscillation feature, w...
DES Y1 results: Splitting growth and geometry to test ΛcDM
Muir, J.; Baxter, E.; Miranda, V.; Doux, C.; Ferté, A.; Leonard, C. D.; Huterer, D.; Jain, B.; Lemos, P.; Raveri, M.; Nadathur, S.; Campos, A. [UNESP]Made available in DSpace on 2022-04-29T08:29:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-21; We analyze Dark Energy Survey (DES) data to constrain a cosmological model where a subset of parameters - focusing on ωm - are split into versions associated with structure growth (e.g., ωmgrow) and expansion history (e.g., ωmgeo). Once the parameters have been specified for the ΛCDM cosmological model,...
Constraints on dark matter to dark radiation conversion in the late universe wi...
Chen, A.; Huterer, D.; Lee, S.; Ferté, A.; Weaverdyck, N.; Alves, O. [UNESP]; Leonard, C. D.; Maccrann, N.; Raveri, M.; Porredon, A.; Di Valentino, E.Made available in DSpace on 2022-04-29T08:29:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-06-15; We study a phenomenological class of models where dark matter converts to dark radiation in the low redshift epoch. This class of models, dubbed DMDR, characterizes the evolution of comoving dark-matter density with two extra parameters, and may be able to help alleviate the observed discrepancies betwe...
Dark Energy Survey Year 3 results: Curved-sky weak lensing mass map reconstruction
Jeffrey, N.; Gatti, M.; Chang, C.; Whiteway, L.; Demirbozan, U.; Kovacs, A.; Pollina, G.; Bacon, D.; Hamaus, N.; Kacprzak, T.; Lahav, O.; Lanusse, F.Made available in DSpace on 2022-04-29T08:30:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-08-01; We present reconstructed convergence maps, mass maps, from the Dark Energy Survey (DES) third year (Y3) weak gravitational lensing data set. The mass maps are weighted projections of the density field (primarily dark matter) in the foreground of the observed galaxies. We use four reconstruction methods,...
The Dark Energy Survey and Operations: Years 1 to 3
Diehl, H. T.; Neilsen, E.; Gruendl, R.; Yanny, B.; Abbott, T. M. C.; Aleksic, J.; Allam, S.; Annis, J.; Balbinot, E.; Baumer, M.; Beaufore, L.Made available in DSpace on 2018-11-26T17:06:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-01-01; The Dark Energy Survey (DES) is an operating optical survey aimed at understanding the accelerating expansion of the universe using four complementary methods: weak gravitational lensing, galaxy cluster counts, baryon acoustic oscillations, and Type la supernovae. To perform the 5000 sq-degree wide fiel...