Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/31193
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | ETTORI, STEFANO | en_US |
dc.contributor.author | Ghirardini, V. | en_US |
dc.contributor.author | Eckert, D. | en_US |
dc.date.accessioned | 2021-11-30T15:43:25Z | - |
dc.date.available | 2021-11-30T15:43:25Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0004-6337 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31193 | - |
dc.description.abstract | We present the constraints on the helium abundance in 12 X-ray luminous galaxy clusters that have been mapped in their X-ray and Sunyaev-Zeldovich (SZ) signals out to $R_{200}$ for the XMM-Newton Cluster Outskirts Project (X-COP). The unprecedented precision available for the estimate of $H_0$ allows us to investigate how much the reconstructed X-ray and SZ signals are consistent with the expected ratio $x$ between helium and proton densities of 0.08-0.1. We find that a $H_0$ around 70 km/s/Mpc is preferred from our measurements, with lower values of $H_0$ as requested from the Planck collaboration (67 km/s/Mpc) requiring a 34% higher value of $x$. On the other hand, higher values of $H_0$, as obtained by measurements in the local universe, impose $x$, from the primordial nucleosynthesis calculations and current solar abundances, reduced by 37--44\%. | en_US |
dc.language.iso | eng | en_US |
dc.title | Helium abundance (and $H_0$) in X-COP galaxy clusters | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1002/asna.202023780 | en_US |
dc.identifier.scopus | 2-s2.0-85080980357 | en_US |
dc.identifier.isi | WOS:000517466200001 | en_US |
dc.identifier.url | https://onlinelibrary.wiley.com/doi/10.1002/asna.202023780 | en_US |
dc.identifier.url | http://arxiv.org/abs/1911.05039v2 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 341 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 210 | en_US |
dc.relation.lastpage | 216 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 3 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMISCHE NACHRICHTEN | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020AN....341..210E | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0003-4117-8617 | - |
crisitem.journal.journalissn | 0004-6337 | - |
crisitem.journal.ance | E016235 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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1911.05039.pdf | preprint | 285.68 kB | Adobe PDF | Visualizza/apri |
asna.202023780-1.pdf | [Administrators only] | 720.58 kB | Adobe PDF |
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