Stopyra, S;
Peiris, HV;
Pontzen, A;
Jasche, J;
Natarajan, P;
(2021)
Quantifying the Rarity of the Local Super-Volume.
Quantifying the rarity of the local super-volume
, 507
(4)
pp. 5425-5431.
10.1093/mnras/stab2456.
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Abstract
We investigate the extent to which the number of clusters of mass exceeding 1015M⊙h−1 within the local super-volume (<135Mpch−1) is compatible with the standard ΛCDM cosmological model. Depending on the mass estimator used, we find that the observed number N of such massive structures can vary between 0 and 5. Adopting N = 5 yields ΛCDM likelihoods as low as 2.4 × 10−3 (with σ8 = 0.81) or 3.8 × 10−5 (with σ8 = 0.74). However, at the other extreme (N = 0), the likelihood is of order unity. Thus, while potentially very powerful, this method is currently limited by systematic uncertainties in cluster mass estimates. This motivates efforts to reduce these systematics with additional observations and improved modelling.
| Type: | Article |
|---|---|
| Title: | Quantifying the Rarity of the Local Super-Volume |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stab2456 |
| Publisher version: | http://dx.doi.org/10.1093/mnras/stab2456 |
| Language: | English |
| Additional information: | © 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | methods: data analysis, large-scale structure of Universe, cosmology: theory |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10134399 |
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