scholarly journals Dark Energy Survey year 1 results: Constraints on extended cosmological models from galaxy clustering and weak lensing

2019 ◽  
Vol 99 (12) ◽  
Author(s):  
T. M. C. Abbott ◽  
F. B. Abdalla ◽  
S. Avila ◽  
M. Banerji ◽  
E. Baxter ◽  
...  
Keyword(s):  
Dark Energy ◽  
Cosmological Models ◽  
Weak Lensing ◽  
Galaxy Clustering ◽  
Dark Energy Survey ◽  
Energy Survey

scholarly journals Dark Energy Survey Year 3 results: Cosmological constraints from galaxy clustering and weak lensing

2022 ◽  
Vol 105 (2) ◽  
Author(s):  
T. M. C. Abbott ◽  
M. Aguena ◽  
A. Alarcon ◽  
S. Allam ◽  
O. Alves ◽  
...  
Keyword(s):  
Dark Energy ◽  
Weak Lensing ◽  
Galaxy Clustering ◽  
Cosmological Constraints ◽  
Dark Energy Survey ◽  
Energy Survey

scholarly journals Dark Energy Survey Year 1 results: constraints on intrinsic alignments and their colour dependence from galaxy clustering and weak lensing

2019 ◽  
Vol 489 (4) ◽  
pp. 5453-5482 ◽  
Author(s):  
S Samuroff ◽  
J Blazek ◽  
M A Troxel ◽  
N MacCrann ◽  
E Krause ◽  
...  
Keyword(s):  
Dark Energy ◽  
Joint Analysis ◽  
Weak Lensing ◽  
Early Type ◽  
Late Type ◽  
Galaxy Clustering ◽  
Dark Energy Survey ◽  
Significant Difference ◽  
Parameter Constraints ◽  
Energy Survey

Abstract We perform a joint analysis of intrinsic alignments and cosmology using tomographic weak lensing, galaxy clustering, and galaxy–galaxy lensing measurements from Year 1 (Y1) of the Dark Energy Survey. We define early- and late-type subsamples, which are found to pass a series of systematics tests, including for spurious photometric redshift error and point spread function correlations. We analyse these split data alongside the fiducial mixed Y1 sample using a range of intrinsic alignment models. In a fiducial non-linear alignment model analysis, assuming a flat Λ cold dark matter cosmology, we find a significant difference in intrinsic alignment amplitude, with early-type galaxies favouring $A_\mathrm{IA} = 2.38^{+0.32}_{-0.31}$ and late-type galaxies consistent with no intrinsic alignments at $0.05^{+0.10}_{-0.09}$. The analysis is repeated using a number of extended model spaces, including a physically motivated model that includes both tidal torquing and tidal alignment mechanisms. In multiprobe likelihood chains in which cosmology, intrinsic alignments in both galaxy samples and all other relevant systematics are varied simultaneously, we find the tidal alignment and tidal torquing parts of the intrinsic alignment signal have amplitudes $A_1 = 2.66 ^{+0.67}_{-0.66}$, $A_2=-2.94^{+1.94}_{-1.83}$, respectively, for early-type galaxies and $A_1 = 0.62 ^{+0.41}_{-0.41}$, $A_2 = -2.26^{+1.30}_{-1.16}$ for late-type galaxies. In the full (mixed) Y1 sample the best constraints are $A_1 = 0.70 ^{+0.41}_{-0.38}$, $A_2 = -1.36 ^{+1.08}_{-1.41}$. For all galaxy splits and IA models considered, we report cosmological parameter constraints consistent with the results of the main DES Y1 cosmic shear and multiprobe cosmology papers.

scholarly journals Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing

2018 ◽  
Vol 98 (4) ◽  
Author(s):  
T. M. C. Abbott ◽  
F. B. Abdalla ◽  
A. Alarcon ◽  
J. Aleksić ◽  
S. Allam ◽  
...  
Keyword(s):  
Dark Energy ◽  
Weak Lensing ◽  
Galaxy Clustering ◽  
Cosmological Constraints ◽  
Dark Energy Survey ◽  
Energy Survey

scholarly journals Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data

2019 ◽  
Vol 485 (1) ◽  
pp. 69-87 ◽  
Author(s):  
C Stern ◽  
J P Dietrich ◽  
S Bocquet ◽  
D Applegate ◽  
J J Mohr ◽  
...  
Keyword(s):  
Dark Energy ◽  
Galaxy Clusters ◽  
Weak Lensing ◽  
Dark Energy Survey ◽  
Energy Survey

scholarly journals Dark Energy Survey Year 1 Results: Cosmological constraints from cluster abundances and weak lensing

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
T. M. C. Abbott ◽  
M. Aguena ◽  
A. Alarcon ◽  
S. Allam ◽  
S. Allen ◽  
...  
Keyword(s):  
Dark Energy ◽  
Weak Lensing ◽  
Cosmological Constraints ◽  
Dark Energy Survey ◽  
Energy Survey

scholarly journals Dark Energy Survey year 1 results: Joint analysis of galaxy clustering, galaxy lensing, and CMB lensing two-point functions

2019 ◽  
Vol 100 (2) ◽  
Author(s):  
T. M. C. Abbott ◽  
F. B. Abdalla ◽  
A. Alarcon ◽  
S. Allam ◽  
J. Annis ◽  
...  
Keyword(s):  
Dark Energy ◽  
Joint Analysis ◽  
Galaxy Clustering ◽  
Dark Energy Survey ◽  
Energy Survey

scholarly journals Dark Energy Survey Year 1 Results: redshift distributions of the weak-lensing source galaxies

2018 ◽  
Vol 478 (1) ◽  
pp. 592-610 ◽  
Author(s):  
B Hoyle ◽  
D Gruen ◽  
G M Bernstein ◽  
M M Rau ◽  
J De Vicente ◽  
...  
Keyword(s):  
Dark Energy ◽  
Weak Lensing ◽  
Dark Energy Survey ◽  
Energy Survey

scholarly journals Joint analysis of galaxy-galaxy lensing and galaxy clustering: Methodology and forecasts for Dark Energy Survey

2016 ◽  
Vol 94 (6) ◽  
Author(s):  
Y. Park ◽  
E. Krause ◽  
S. Dodelson ◽  
B. Jain ◽  
A. Amara ◽  
...  
Keyword(s):  
Dark Energy ◽  
Joint Analysis ◽  
Galaxy Clustering ◽  
Dark Energy Survey ◽  
Energy Survey
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