Show simple item record

dc.contributor.author
Dark Energy Survey Collaboration
dc.contributor.author
Troxel, Michael A.
dc.contributor.author
Amara, Adam
dc.contributor.author
Hartley, William G.
dc.contributor.author
Kacprzak, Tomasz
dc.contributor.author
Refregier, Alexandre
dc.contributor.author
et al.
dc.date.accessioned
2021-03-17T14:41:07Z
dc.date.available
2021-03-17T14:41:07Z
dc.date.issued
2018-08-15
dc.identifier.issn
1550-7998
dc.identifier.issn
0556-2821
dc.identifier.issn
1550-2368
dc.identifier.other
10.1103/physrevd.98.043528
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/475133
dc.description.abstract
We use 26×106 galaxies from the Dark Energy Survey (DES) Year 1 shape catalogs over 1321 deg2 of the sky to produce the most significant measurement of cosmic shear in a galaxy survey to date. We constrain cosmological parameters in both the flat ΛCDM and the wCDM models, while also varying the neutrino mass density. These results are shown to be robust using two independent shape catalogs, two independent photo-z calibration methods, and two independent analysis pipelines in a blind analysis. We find a 3.5% fractional uncertainty on σ8(Ωm/0.3)0.5=0.782-0.027+0.027 at 68% C.L., which is a factor of 2.5 improvement over the fractional constraining power of our DES Science Verification results. In wCDM, we find a 4.8% fractional uncertainty on σ8(Ωm/0.3)0.5=0.777-0.038+0.036 and a dark energy equation-of-state w=-0.95-0.39+0.33. We find results that are consistent with previous cosmic shear constraints in σ8 - Ωm, and we see no evidence for disagreement of our weak lensing data with data from the cosmic microwave background. Finally, we find no evidence preferring a wCDM model allowing w≠-1. We expect further significant improvements with subsequent years of DES data, which will more than triple the sky coverage of our shape catalogs and double the effective integrated exposure time per galaxy.
en_US
dc.language.iso
en
en_US
dc.publisher
American Institute of Physics
en_US
dc.title
Dark Energy Survey Year 1 results: Cosmological constraints from cosmic shear
en_US
dc.type
Journal Article
dc.date.published
2018-08-27
ethz.journal.title
Physical Review D
ethz.journal.volume
98
en_US
ethz.journal.issue
4
en_US
ethz.journal.abbreviated
Phys. rev. D.
ethz.pages.start
043528
en_US
ethz.size
33 p.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Melville, NY
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::03928 - Refregier, Alexandre / Refregier, Alexandre
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::03928 - Refregier, Alexandre / Refregier, Alexandre
en_US
ethz.date.deposited
2018-09-07T18:07:37Z
ethz.source
FORM
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-03-17T14:41:26Z
ethz.rosetta.lastUpdated
2022-03-29T05:50:28Z
ethz.rosetta.versionExported
true
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/287784
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/314834
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/465978
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/317124
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Dark%20Energy%20Survey%20Year%201%20results:%20Cosmological%20constraints%20from%20cosmic%20shear&rft.jtitle=Physical%20Review%20D&rft.date=2018-08-15&rft.volume=98&rft.issue=4&rft.spage=043528&rft.issn=1550-7998&0556-2821&1550-2368&rft.au=Dark%20Energy%20Survey%20Collaboration&Troxel,%20Michael%20A.&Amara,%20Adam&Hartley,%20William%20G.&Kacprzak,%20Tomasz&rft.genre=article&rft_id=info:doi/10.1103/physrevd.98.043528&
 Search print copy at ETH Library

Files in this item

FilesSizeFormatOpen in viewer

There are no files associated with this item.

Publication type

Show simple item record