Cosmological Constraints from Multiple Probes in the Dark Energy Survey
Abstract
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 lightcurves; 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, , 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 . The geometry is shown to be consistent with a spatially flat Universe, and we obtain a constraint on the baryon density of that is independent of early Universe measurements. These results demonstrate the potential power of large multi-probe 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.
Keywords
Cite
@article{arxiv.1811.02375,
title = {Cosmological Constraints from Multiple Probes in the Dark Energy Survey},
author = {DES Collaboration and T. M. C. Abbott and A. Alarcon and S. Allam and P. Andersen and F. Andrade-Oliveira and J. Annis and J. Asorey and A. Avelino and S. Avila and D. Bacon and N. Banik and B. A. Bassett and E. Baxter and K. Bechtol and M. R. Becker and G. M. Bernstein and E. Bertin and J. Blazek and S. L. Bridle and D. Brooks and D. Brout and D. L. Burke and J. Calcino and H. Camacho and A. Campos and A. Carnero Rosell and D. Carollo and M. Carrasco Kind and J. Carretero and F. J. Castander and R. Cawthon and P. Challis and K. C. Chan and C. Chang and M. Childress and A. Clocchiatti and M. Crocce and C. E. Cunha and C. B. D'Andrea and L. N. da Costa and C. Davis and T. M. Davis and J. De Vicente and D. L. DePoy and J. DeRose and S. Desai and H. T. Diehl and J. P. Dietrich and S. Dodelson and P. Doel and A. Drlica-Wagner and T. F. Eifler and J. Elvin-Poole and J. Estrada and A. E. Evrard and E. Fernandez and A. V. Filippenko and B. Flaugher and R. J. Foley and P. Fosalba and J. Frieman and L. Galbany and J. García-Bellido and M. Gatti and E. Gaztanaga and D. W. Gerdes and T. Giannantonio and K. Glazebrook and D. A. Goldstein and D. Gruen and R. A. Gruendl and J. Gschwend and G. Gutierrez and W. G. Hartley and S. R. Hinton and D. L. Hollowood and K. Honscheid and J. K. Hoormann and B. Hoyle and D. Huterer and B. Jain and D. J. James and M. Jarvis and T. Jeltema and E. Kasai and S. Kent and R. Kessler and A. G. Kim and R. P. Kirshner and N. Kokron and E. Krause and R. Kron and K. Kuehn and N. Kuropatkin and O. Lahav and J. Lasker and P. Lemos and G. F. Lewis and T. S. Li and C. Lidman and M. Lima and H. Lin and E. Macaulay and N. MacCrann and M. A. G. Maia and K. S. Mandel and M. March and J. Marriner and J. L. Marshall and P. Martini and R. G. McMahon and P. Melchior and F. Menanteau and R. Miquel and J. J. Mohr and E. Morganson and J. Muir and A. Möller and E. Neilsen and R. C. Nichol and B. Nord and R. L. C. Ogando and A. Palmese and Y. -C. Pan and H. V. Peiris and W. J. Percival and A. A. Plazas and A. Porredon and J. Prat and A. K. Romer and A. Roodman and R. Rosenfeld and A. J. Ross and E. S. Rykoff and S. Samuroff and C. Sánchez and E. Sanchez and V. Scarpine and R. Schindler and M. Schubnell and D. Scolnic and L. F. Secco and S. Serrano and I. Sevilla-Noarbe and R. Sharp and E. Sheldon and M. Smith and M. Soares-Santos and F. Sobreira and N. E. Sommer and E. Swann and M. E. C. Swanson and G. Tarle and D. Thomas and R. C. Thomas and M. A. Troxel and B. E. Tucker and S. A. Uddin and P. Vielzeuf and A. R. Walker and M. Wang and N. Weaverdyck and R. H. Wechsler and J. Weller and B. Yanny and B. Zhang and Y. Zhang and J. Zuntz},
journal= {arXiv preprint arXiv:1811.02375},
year = {2019}
}
Comments
8 pages, 2 figures; v3 matches version accepted by PRL