DC pole | Wartość | Język |
dc.contributor.author | Qi, Jing-Zhao | - |
dc.contributor.author | Cao, Shuo | - |
dc.contributor.author | Biesiada, Marek | - |
dc.contributor.author | Zheng, Xiaogang | - |
dc.contributor.author | Zhu, ZongiHong | - |
dc.date.accessioned | 2017-11-13T20:58:44Z | - |
dc.date.available | 2017-11-13T20:58:44Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | European Physical Journal C, Vol. 77, iss. 8 (2017), art. no 502 | pl_PL |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/294 | - |
dc.description.abstract | Using a new recently compiled milliarcsecond compact radio data set of 120 intermediate-luminosity quasars in the redshift range 0.46 < z< 2.76 , whose statistical linear sizes show negligible dependence on redshifts and intrinsic luminosity and thus represent standard rulers in cosmology, we constrain three viable and most popular f(T) gravity models, where T is the torsion scalar in teleparallel gravity. Our analysis reveals that constraining power of the quasars data (N= 120) is comparable to the Union2.1 SN Ia data (N= 580) for all three f(T) models. Together with other standard ruler probes such as cosmic microwave background and baryon acoustic oscillation distance measurements, the present value of the matter density parameter Ω m obtained by quasars is much larger than that derived from other observations. For one of the models considered (f1CDM) a small but noticeable deviation from Λ CDM cosmology is present, while in the framework of f3CDM the effective equation of state may cross the phantom divide line at lower redshifts. These results indicate that intermediate-luminosity quasars could provide an effective observational probe comparable to SN Ia at much higher redshifts, and f(T) gravity is a reasonable candidate for the modified gravity theory. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | radio quasars | pl_PL |
dc.subject | cosmology | pl_PL |
dc.title | New observational constraints on f(T) cosmology from radio quasars | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.relation.journal | European Physical Journal C | pl_PL |
dc.identifier.doi | 10.1140/epjc/s10052-017-5069-1 | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
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