Journal
ASTRONOMY & ASTROPHYSICS
Volume 649, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/202039805
Keywords
cosmology: observations; cosmological parameters; gravitational lensing: weak; large-scale structure of Universe; dark energy; methods: statistical
Categories
Funding
- European Union
- European Research Council [647112, 770935, 693024, 797794, 702971]
- Max Planck Society
- Alexander von Humboldt Foundation
- Federal Ministry of Education and Research
- Swiss National Science Foundation [170547]
- Deutsche Forschungsgemeinschaft Heisenberg [Hi 1495/5-1]
- Netherlands Organisation for Scientific Research Vici [639.043.512]
- Polish Ministry of Science and Higher Education [DIR/WK/2018/12]
- Polish National Science Center [2018/30/E/ST9/00698, 2018/31/G/ST9/03388]
- Royal Society [RGF/EA/181006]
- Beecroft Trust
- NSFC of China [11973070]
- Shanghai Committee of Science and Technology [19ZR1466600]
- Key Research Program of Frontier Sciences, CAS [ZDBS-LY-7013]
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
Ask authors/readers for more resources
The study presents constraints on extensions to the standard cosmological model involving parameters related to the curvature of space, neutrino masses, and dark energy. By combining measurements from various sources, the results confirm the consistency of the flat Lambda CDM model and offer tight constraints on key parameters.
We present constraints on extensions to the standard cosmological model of a spatially flat Universe governed by general relativity, a cosmological constant (Lambda), and cold dark matter (CDM) by varying the spatial curvature Omega (K), the sum of the neutrino masses Sigma m(nu), the dark energy equation of state parameter w, and the Hu-Sawicki f(R) gravity f(R0) parameter. With the combined 3x2 pt measurements of cosmic shear from the Kilo-Degree Survey (KiDS-1000), galaxy clustering from the Baryon Oscillation Spectroscopic Survey (BOSS), and galaxy-galaxy lensing from the overlap between KiDS-1000, BOSS, and the spectroscopic 2-degree Field Lensing Survey, we find results that are fully consistent with a flat Lambda CDM model with Omega (K) = 0.011(-0.057)(+0.054) Omega K = 0 . 011 - 0.057 + 0.054 Sigma ,Sigma m(nu)<1.76 eV (95% CL), and w = -0.99(-0.13)(+0.11) w = - 0 . 99 - 0.13 + 0.11 text . The f(R0) parameter is unconstrained in our fully non-linear f(R) cosmic shear analysis. Considering three different model selection criteria, we find no clear preference for either the fiducial flat Lambda CDM model or any of the considered extensions. In addition to extensions to the flat Lambda CDM parameter space, we also explore restrictions to common subsets of the flat Lambda CDM parameter space by fixing the amplitude of the primordial power spectrum to the Planck best-fit value, as well as adding external data from supernovae and lensing of the cosmic microwave background (CMB). Neither the beyond-Lambda CDM models nor the imposed restrictions explored in this analysis are able to resolve the similar to 3 sigma tension in S-8 between the 3x2 pt constraints and the Planck temperature and polarisation data, with the exception of wCDM, where the S-8 tension is resolved. The tension in the wCDM case persists, however, when considering the joint S-8-w parameter space. The joint flat Lambda CDM CMB lensing and 3x2 pt analysis is found to yield tight constraints on Omega (m) = 0.307(-0.013)(+0.008) Omega m = 0 . 307 - 0.013 + 0.008 , sigma (8) = 0.769(-0.010)(+0.022) sigma 8 = 0 . 769 - 0.010 + 0.022 , and S-8 = 0.779(-0.013)(+0.013) S 8 = 0 . 779 - 0.013 + 0.013 .
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available