We analyse the full shape of anisotropic clustering measurements from the extended Baryon Oscillation Spectroscopic Survey quasar sample together with the combined galaxy sample from the Baryon Oscillation Spectroscopic Survey. We obtain constraints on the cosmological parameters independent of the Hubble parameter h for the extensions of the Lambda cold dark matter (ΛCDM) models, focusing on cosmologies with free dark energy equation of state parameter w. We combine the clustering constraints with those from the latest cosmic microwave background data from Planck to obtain joint constraints for these cosmologies for w and the additional extension parameters - its time evolution wa, the physical curvature density ωK and the neutrino mass sum ∑mν. Our joint constraints are consistent with a flat ΛCDM cosmological model within 68 per cent confidence limits. We demonstrate that the Planck data are able to place tight constraints on the clustering amplitude today, σ12, in cosmologies with varying w and present the first constraints for the clustering amplitude for such cosmologies, which is found to be slightly higher than the ΛCDM value. Additionally, we show that when we vary w and allow for non-flat cosmologies and the physical curvature density is used, Planck prefers a curved universe at 4σ significance, which is ∼2σ higher than when using the relative curvature density σK. Finally, when w is varied freely, clustering provides only a modest improvement (of 0.021 eV) on the upper limit of ∑mν.
sem*naite, A., Sanchez, A., Pezzotta, A., Hou, J., Eggemeier, A., Crocce, M., et al. (2023). Beyond - ΛCDM constraints from the full shape clustering measurements from BOSS and eBOSS. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 521(4), 5013-5025 [10.1093/mnras/stad849].
Beyond - ΛCDM constraints from the full shape clustering measurements from BOSS and eBOSS
Pezzotta A.;
2023
Abstract
We analyse the full shape of anisotropic clustering measurements from the extended Baryon Oscillation Spectroscopic Survey quasar sample together with the combined galaxy sample from the Baryon Oscillation Spectroscopic Survey. We obtain constraints on the cosmological parameters independent of the Hubble parameter h for the extensions of the Lambda cold dark matter (ΛCDM) models, focusing on cosmologies with free dark energy equation of state parameter w. We combine the clustering constraints with those from the latest cosmic microwave background data from Planck to obtain joint constraints for these cosmologies for w and the additional extension parameters - its time evolution wa, the physical curvature density ωK and the neutrino mass sum ∑mν. Our joint constraints are consistent with a flat ΛCDM cosmological model within 68 per cent confidence limits. We demonstrate that the Planck data are able to place tight constraints on the clustering amplitude today, σ12, in cosmologies with varying w and present the first constraints for the clustering amplitude for such cosmologies, which is found to be slightly higher than the ΛCDM value. Additionally, we show that when we vary w and allow for non-flat cosmologies and the physical curvature density is used, Planck prefers a curved universe at 4σ significance, which is ∼2σ higher than when using the relative curvature density σK. Finally, when w is varied freely, clustering provides only a modest improvement (of 0.021 eV) on the upper limit of ∑mν.
Articolo in rivista - Articolo scientifico
cosmological parameters; large-scale structure of Universe;
English
22-mar-2023
2023
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
521
4
5013
5025
open
sem*naite, A., Sanchez, A., Pezzotta, A., Hou, J., Eggemeier, A., Crocce, M., et al. (2023). Beyond - ΛCDM constraints from the full shape clustering measurements from BOSS and eBOSS. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 521(4), 5013-5025 [10.1093/mnras/stad849].
01 - Articolo su rivista
{% } %}
{%# o.licenseName %}
File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
| sem*naite-2023-Monthly Notices of the Royal Astronomical Society-VoR.pdf accesso aperto Descrizione: 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. Tipologia di allegato:Publisher’s Version (Version of Record, VoR) Licenza:Creative Commons Dimensione1.9 MB FormatoAdobe PDF Visualizza/Apri | 1.9 MB | Adobe PDF | Visualizza/Apri |
| sem*naite-2022-Monthly Notices of the Royal Astronomical Society-Arxiv-Preprint.pdf accesso aperto Tipologia di allegato:Submitted Version (Pre-print) Licenza:Creative Commons Dimensione2.46 MB FormatoAdobe PDF Visualizza/Apri | 2.46 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/496779
Citazioni
17
');$.ajax({url: '/itemExternalCitation/scopus/get.json',dataType: 'json',data: { discriminator: 'scopus', itemId: 'b7f3617a-dd44-4dfd-aae4-3cb72c6a531b', forceUpdate: forceUpdate }}).done(function(adata) {$('#scopusCitedResultTotal').tooltip('dispose');$('#scopusCitedResultTotal').prop("onclick", null).off("click");if (adata.total==null){$('#scopusCitedResultTotal').html('17');} else {$('#scopusCitedResultTotal').html(adata.total);}var year=new Date().getFullYear();scopusChartData[0] = (adata.yearTotalMap[''+(year-5)]!=null ? adata.yearTotalMap[''+(year-5)] : 0);scopusChartData[1] = (adata.yearTotalMap[''+(year-4)]!=null ? adata.yearTotalMap[''+(year-4)] : 0);scopusChartData[2] = (adata.yearTotalMap[''+(year-3)]!=null ? adata.yearTotalMap[''+(year-3)] : 0);scopusChartData[3] = (adata.yearTotalMap[''+(year-2)]!=null ? adata.yearTotalMap[''+(year-2)] : 0);scopusChartData[4] = (adata.yearTotalMap[''+(year-1)]!=null ? adata.yearTotalMap[''+(year-1)] : 0);scopusChartData[5] = (adata.yearTotalMap[''+year]!=null ? adata.yearTotalMap[''+year] : 0);drawChart();}).always(function(adata){//console.log('end scopusUpdateCitation');runningExternal=false;});}
15