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  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., et al. (2021). Dark Energy Survey Year 3 results: Curved-sky weak lensing mass map reconstruction. Monthly Notices of the Royal Astronomical Society, 505(3), 4626-4645. doi:10.1093/mnras/stab1495.

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Jeffrey, N., Author
Gatti, M., Author
Chang, C., Author
Whiteway, L., Author
Demirbozan, U., Author
Kovacs, A., Author
Pollina, G., Author
Bacon, D., Author
Hamaus, N., Author
Kacprzak, T., Author
Lahav, O., Author
Lanusse, F., Author
Mawdsley, B., Author
Nadathur, S., Author
Starck, J. L., Author
Vielzeuf, P., Author
Zeurcher, D., Author
Alarcon, A., Author
Amon, A., Author
Bechtol, K., Author
Bernstein, G. M., AuthorCampos, A., AuthorRosell, A. Carnero, AuthorKind, M. Carrasco, AuthorCawthon, R., AuthorChen, R., AuthorChoi, A., AuthorCordero, J., AuthorDavis, C., AuthorDeRose, J., AuthorDoux, C., AuthorDrlica-Wagner, A., AuthorEckert, K., AuthorElsner, F., AuthorElvin-Poole, J., AuthorEverett, S., AuthorFerte, A., AuthorGiannini, G., AuthorGruen, D., AuthorGruendl, R. A., AuthorHarrison, I., AuthorHartley, W. G., AuthorHerner, K., AuthorHuff, E. M., AuthorHuterer, D., AuthorKuropatkin, N., AuthorJarvis, M., AuthorLeget, P. F., AuthorMacCrann, N., AuthorMcCullough, J., AuthorMuir, J., AuthorMyles, J., AuthorNavarro-Alsina, A., AuthorPandey, S., AuthorPrat, J., AuthorRaveri, M., AuthorRollins, R. P., AuthorRoss, A. J., AuthorRykoff, E. S., AuthorSanchez, C., AuthorSecco, L. F., AuthorSevilla-Noarbe, I., AuthorSheldon, E., AuthorShin, T., AuthorTroxel, M. A., AuthorTutusaus, I., AuthorVarga, T. N.1, Author              Yanny, B., AuthorYin, B., AuthorZhang, Y., AuthorZuntz, J., AuthorAbbott, T. M. C., AuthorAguena, M., AuthorAllam, S., AuthorAndrade-Oliveira, F., AuthorBecker, M. R., AuthorBertin, E., AuthorBhargava, S., AuthorBrooks, D., AuthorBurke, D. L., AuthorCarretero, J., AuthorCastander, F. J., AuthorConselice, C., AuthorCostanzi, M., AuthorCrocce, M., Authorda Costa, L. N., AuthorPereira, M. E. S., AuthorVicente, J. De, AuthorDesai, S., AuthorDiehl, H. T., AuthorDietrich, J. P., AuthorDoel, P., AuthorFerrero, I., AuthorFlaugher, B., AuthorFosalba, P., AuthorGarcıa-Bellido, J., AuthorGaztanaga, E., AuthorGerdes, D. W., AuthorGiannantonio, T., AuthorGschwend, J., AuthorGutierrez, G., AuthorHinton, S. R., AuthorHollowood, D. L., AuthorHoyle, B.1, Author              Jain, B., AuthorJames, D. J., AuthorLima, M., AuthorMaia, M. A. G., AuthorMarch, M., AuthorMarshall, J. L., AuthorMelchior, P., AuthorMenanteau, F., AuthorMiquel, R., AuthorMohr, J. J.1, Author              Morgan, R., AuthorOgando, R. L. C., AuthorPalmese, A., AuthorPaz-Chinchon, F., AuthorPlazas, A. A., AuthorRodriguez-Monroy, M., AuthorRoodman, A., AuthorSanchez, E., AuthorScarpine, V., AuthorSerrano, S., AuthorSmith, M., AuthorSoares-Santos, M., AuthorSuchyta, E., AuthorTarle, G., AuthorThomas, D., AuthorTo, C., AuthorWeller, J.1, Author               more..
Affiliations:
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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 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.

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Language(s): eng - English
 Dates: 2021-05-27
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stab1495
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Abbreviation : Mon. Not. Roy. Astron. Soc.
Source Genre: Journal
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Pages: - Volume / Issue: 505 (3) Sequence Number: - Start / End Page: 4626 - 4645 Identifier: ISSN: 0035-8711
ISSN: 1365-8711