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Cosmological Constraints from Multiple Probes in the Dark Energy Survey

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posted on 2024-08-06, 12:00 authored by T. M.C. Abbott, A. Alarcon, S. Allam, P. Andersen, F. Andrade-Oliveira, J. Annis, Jacobo Asorey Barreiro, S. Avila, D. Bacon, N. Banik, B. A. Bassett, E. Baxter, K. Bechtol, M. R. Becker, G. M. Bernstein, E. Bertin, J. Blazek, S. L. Bridle, D. Brooks, D. Brout, D. L. Burke, J. Calcino, H. Camacho, A. Campos, A. Carnero Rosell, D. Carollo, M. Carrasco Kind, J. Carretero, F. J. Castander, R. Cawthon, P. Challis, K. C. Chan, C. Chang, M. Childress, M. Crocce, C. E. Cunha, C. B. D'Andrea, L. N. Da Costa, C. Davis, T. M. Davis, J. De Vicente, D. L. Depoy, J. Derose, S. Desai, H. T. Diehl, J. P. Dietrich, S. Dodelson, P. Doel, A. Drlica-Wagner, T. F. Eifler, J. Elvin-Poole, J. Estrada, A. E. Evrard, E. Fernandez, B. Flaugher, R. J. Foley, P. Fosalba, J. Frieman, L. Galbany, J. García-Bellido, M. Gatti, E. Gaztanaga, D. W. Gerdes, T. Giannantonio, Karl GlazebrookKarl Glazebrook, D. A. Goldstein, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, W. G. Hartley, S. R. Hinton, D. L. Hollowood, K. Honscheid, J. K. Hoormann, B. Hoyle, D. Huterer, B. Jain, D. J. James, M. Jarvis, T. Jeltema, E. Kasai, S. Kent, R. Kessler, A. G. Kim, N. Kokron, E. Krause, R. Kron, K. Kuehn, N. Kuropatkin, O. Lahav, J. Lasker, P. Lemos, G. F. Lewis, T. S. Li, C. Lidman, M. Lima, H. Lin, E. Macaulay, N. Maccrann, M. A.G. Maia, M. March, J. Marriner, J. L. Marshall, P. Martini, R. G. McMahon, P. Melchior, F. Menanteau, R. Miquel, J. J. Mohr, E. Morganson, J. Muir, Anais MollerAnais Moller, E. Neilsen, R. C. Nichol, B. Nord, R. L.C. Ogando, A. Palmese, Y. C. Pan, H. V. Peiris, W. J. Percival, A. A. Plazas, A. Porredon, J. Prat, A. K. Romer, A. Roodman, R. Rosenfeld, A. J. Ross, E. S. Rykoff, S. Samuroff, C. Sánchez, E. Sanchez, V. Scarpine, R. Schindler, M. Schubnell, D. Scolnic, L. F. Secco, S. Serrano, I. Sevilla-Noarbe, R. Sharp, E. Sheldon, M. Smith, M. Soares-Santos, F. Sobreira, N. E. Sommer, E. Swann, M. E.C. Swanson, G. Tarle, D. Thomas, R. C. Thomas, M. A. Troxel, B. E. Tucker, S. A. Uddin, P. Vielzeuf, A. R. Walker, M. Wang, N. Weaverdyck, R. H. Wechsler, J. Weller, B. Yanny, B. Zhang, Y. Zhang, J. Zuntz
The combination of multiple observational probes has long been advocated as a powerful technique to constrain cosmological parameters, in particular dark energy. The Dark Energy Survey has measured 207 spectroscopically confirmed type Ia supernova light curves, the baryon acoustic oscillation feature, weak gravitational lensing, and galaxy clustering. Here we present combined results from these probes, deriving constraints on the equation of state, w, of dark energy and its energy density in the Universe. Independently of other experiments, such as those that measure the cosmic microwave background, the probes from this single photometric survey rule out a Universe with no dark energy, finding w=-0.80-0.11+0.09. The geometry is shown to be consistent with a spatially flat Universe, and we obtain a constraint on the baryon density of ωb=0.069-0.012+0.009 that is independent of early Universe measurements. These results demonstrate the potential power of large multiprobe photometric surveys and pave the way for order of magnitude advances in our constraints on properties of dark energy and cosmology over the next decade.

Funding

ARC Centre of Excellence for All-sky Astrophysics

Australian Research Council

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ISSN

1079-7114

Journal title

Physical Review Letters

Volume

122

Issue

17

Article number

article no. 171301

Pagination

171301-

Publisher

American Physical Society (APS)

Copyright statement

Copyright © 2019 American Physical Society. The published version is reproduced in accordance with the copyright policy of the publisher.

Notes

Many more authors listed at Publisher's URL.

Language

eng

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