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  • Stopyra, Stephen, et al. (author)
  • Quantifying the rarity of the local super-volume
  • 2021
  • In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 507:4, s. 5425-5431
  • Journal article (peer-reviewed)abstract
    • We investigate the extent to which the number of clusters of mass exceeding 1015 M h−1 within the local super-volume(< 135 Mpc h−1) is compatible with the standard CDM cosmological model. Depending on the mass estimator used, we findthat the observed number N of such massive structures can vary between 0 and 5. Adopting N = 5 yields CDM likelihoods aslow as 2.4 × 10−3 (with σ 8 = 0.81) or 3.8 × 10−5 (with σ 8 = 0.74). However, at the other extreme (N = 0), the likelihood is oforder unity. Thus, while potentially very powerful, this method is currently limited by systematic uncertainties in cluster massestimates. This motivates efforts to reduce these systematics with additional observations and improved modelling.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Natarajan, Priyamvad ... (1)
Pontzen, Andrew (1)
Peiris, Hiranya (1)
Jasche, Jens (1)
Stopyra, Stephen (1)
University
Stockholm University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Medical and Health Sciences (1)
Year
2020 (1)

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