articleAstronomy and AstrophysicsNov 24, 2020BRONZE OA

KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints

CHCatherine HeymansTTTilman TrösterMAMarika AsgariCBChris BlakeHHHendrik Hildebrandt

Royal Observatory · Ruhr University Bochum · +19 more institutions

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Abstract

We present a joint cosmological analysis of weak gravitational lensing observations from the Kilo-Degree Survey (KiDS-1000), with redshift-space galaxy clustering observations from the Baryon Oscillation Spectroscopic Survey (BOSS) and galaxy-galaxy lensing observations from the overlap between KiDS-1000, BOSS, and the spectroscopic 2-degree Field Lensing Survey. This combination of large-scale structure probes breaks the degeneracies between cosmological parameters for individual observables, resulting in a constraint on the structure growth parameter S 8 = σ 8 √(Ω m /0.3) = 0.766 −0.014 +0.020 , which has the same overall precision as that reported by the full-sky cosmic microwave background observations…

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Authors

34
  • CH
    Catherine HeymansCorresponding

    Royal Observatory, Ruhr University Bochum, University of Edinburgh

  • TT
    Tilman Tröster
  • MA
    Marika Asgari

    Royal Observatory, University of Edinburgh

  • CB
    Chris Blake

    Swinburne University of Technology

  • HH
    Hendrik Hildebrandt

    Ruhr University Bochum

Topics & keywords

Topics
Keywords
  • Weak gravitational lensing
  • Cosmic microwave background
  • Galaxy
  • Gravitational lens
  • Redshift
  • Gravitational lensing formalism
  • Amplitude
  • Strong gravitational lensing
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