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dc.contributor.author
Jeffrey, Niall
dc.contributor.author
Gatti, Marco
dc.contributor.author
Chang, Chihway
dc.contributor.author
Whiteway, Lorne
dc.contributor.author
Demirbozan, Umut
dc.contributor.author
Kovács, András
dc.contributor.author
Pollina, Giorgia
dc.contributor.author
Bacon, David
dc.contributor.author
Hamaus, Nico
dc.contributor.author
Kacprzak, Tomasz
dc.contributor.author
Lahav, Ofer
dc.contributor.author
Lanusse, Francois
dc.contributor.author
Mawdsley, Ben
dc.contributor.author
Nadathur, Seshadri
dc.contributor.author
Starck, Jean-Luc
dc.contributor.author
Vielzeuf, Pauline
dc.contributor.author
Zürcher, Dominik
dc.contributor.author
Alarcon, Alex
dc.contributor.author
Amon, Alexandra
dc.contributor.author
Bechtol, Keith
dc.contributor.author
et al.
dc.date.accessioned
2021-08-26T08:03:07Z
dc.date.available
2021-07-10T05:24:42Z
dc.date.available
2021-08-26T08:03:07Z
dc.date.issued
2021-08
dc.identifier.issn
0035-8711
dc.identifier.issn
1365-2966
dc.identifier.other
10.1093/mnras/stab1495
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/493869
dc.description.abstract
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, each is a maximum a posteriori estimate with a different model for the prior probability of the map: Kaiser-Squires, null B-mode prior, Gaussian prior, and a sparsity prior. All methods are implemented on the celestial sphere to accommodate the large sky coverage of the DES Y3 data. We compare the methods using realistic ΛCDM simulations with mock data that are closely matched to the DES Y3 data. We quantify the performance of the methods at the map level and then apply the reconstruction methods to the DES Y3 data, performing tests for systematic error effects. The maps are compared with optical foreground cosmic-web structures and are used to evaluate the lensing signal from cosmic-void profiles. The recovered dark matter map covers the largest sky fraction of any galaxy weak lensing map to date.
en_US
dc.language.iso
en
en_US
dc.publisher
Oxford University Press
en_US
dc.subject
gravitational lensing: weak
en_US
dc.subject
methods: statistical
en_US
dc.subject
large-scale structure of Universe
en_US
dc.title
Dark Energy Survey Year 3 results: Curved-sky weak lensing mass map reconstruction
en_US
dc.type
Journal Article
dc.date.published
2021-05-27
ethz.journal.title
Monthly Notices of the Royal Astronomical Society
ethz.journal.volume
505
en_US
ethz.journal.issue
3
en_US
ethz.journal.abbreviated
Mon. Not. R. Astron. Soc.
ethz.pages.start
4626
en_US
ethz.pages.end
4645
en_US
ethz.notes
and (DES Collaboration)
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Oxford
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2021-07-10T05:24:52Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-08-26T08:03:16Z
ethz.rosetta.lastUpdated
2024-02-02T14:34:05Z
ethz.rosetta.versionExported
true
ethz.COinS
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