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dc.contributor.author
Abbott, Timothy M.C.
dc.contributor.author
Aguena, Michel
dc.contributor.author
Alarcón, Àlex
dc.contributor.author
Allam, Sahar S.
dc.contributor.author
Allen, Steven W.
dc.contributor.author
Annis, James T.
dc.contributor.author
Avila, Santiago
dc.contributor.author
Bacon, David J.
dc.contributor.author
Bechtol, Keith
dc.contributor.author
Bermeo, A.
dc.contributor.author
Bernstein, Gary M.
dc.contributor.author
Bertin, Emmanuel
dc.contributor.author
Bhargava, S.
dc.contributor.author
Bocquet, Sebastian
dc.contributor.author
Brooks, David
dc.contributor.author
Brout, Dillon
dc.contributor.author
Buckley-Geer, Elizabeth
dc.contributor.author
Burke, Douglas L.
dc.contributor.author
Carnero Rosell, Aurelio
dc.contributor.author
Carrasco Kind, Matias
dc.contributor.author
Hartley, William G.
dc.contributor.author
et al.
dc.date.accessioned
2020-09-03T07:52:59Z
dc.date.available
2020-07-18T02:47:37Z
dc.date.available
2020-09-03T07:52:59Z
dc.date.issued
2020-07-07
dc.identifier.issn
1550-7998
dc.identifier.issn
0556-2821
dc.identifier.issn
1550-2368
dc.identifier.other
10.1103/PhysRevD.102.023509
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/426881
dc.description.abstract
We perform a joint analysis of the counts and weak lensing signal of redMaPPer clusters selected from the Dark Energy Survey (DES) Year 1 dataset. Our analysis uses the same shear and source photometric redshifts estimates as were used in the DES combined probes analysis. Our analysis results in surprisingly low values for S-8 = sigma(8)(Omega(m)/0.3)(0.5) = 0.65 0.04, driven by a low matter density parameter, Omega(m) = 0.179(-0.038)(+0.031), with sigma(8) - Omega(m) posteriors in 2.4 sigma tension with the DES Y1 3x2pt results, and in 5.6 sigma with the Planck CMB analysis. These results include the impact of post-unblinding changes to the analysis, which did not improve the level of consistency with other data sets compared to the results obtained at the unblinding. The fact that multiple cosmological probes (supernovae, baryon acoustic oscillations, cosmic shear, galaxy clustering and CMB anisotropies), and other galaxy cluster analyses all favor significantly higher matter densities suggests the presence of systematic errors in the data or an incomplete modeling of the relevant physics. Cross checks with x-ray and microwave data, as well as independent constraints on the observable -mass relation from Sunyaev-Zeldovich selected clusters, suggest that the discrepancy resides in our modeling of the weak lensing signal rather than the cluster abundance. Repeating our analysis using a higher richness threshold (lambda >= 30) significantly reduces the tension with other probes, and points to one or more richness -dependent effects not captured by our model.
en_US
dc.language.iso
en
en_US
dc.publisher
American Physical Society
en_US
dc.title
Dark Energy Survey Year 1 Results: Cosmological constraints from cluster abundances and weak lensing
en_US
dc.type
Journal Article
ethz.journal.title
Physical Review D
ethz.journal.volume
102
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
Phys. rev. D.
ethz.pages.start
023509
en_US
ethz.size
34 p.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
College Park, MD
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-07-18T02:47:41Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2020-09-03T07:53:34Z
ethz.rosetta.lastUpdated
2020-09-03T07:53:34Z
ethz.rosetta.versionExported
true
ethz.COinS
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