DC pole | Wartość | Język |
dc.contributor.author | Zheng, Xiaogang | - |
dc.contributor.author | Qi, Jing-Zhao | - |
dc.contributor.author | Ca, Shuo | - |
dc.contributor.author | Li, Tonghua | - |
dc.contributor.author | Biesiada, Marek | - |
dc.contributor.author | Miernik, Sylwia | - |
dc.contributor.author | Zhu, Zong-Hong | - |
dc.date.accessioned | 2019-08-28T05:45:06Z | - |
dc.date.available | 2019-08-28T05:45:06Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | European Physical Journal C, Vol.79, iss.7 (2019), art. no 637, s. 1-8 | pl_PL |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/10667 | - |
dc.description.abstract | The gas depletion factor γ (z), i.e., the average
ratio of the gas mass fraction to the cosmic mean baryon
fraction of galaxy clusters, plays a very important role in
the cosmological application of the gas mass fraction measurements.
In this paper, using the newest catalog of 182
galaxy clusters detected by the Atacama Cosmology Telescope
(ACT) Polarization experiment,we investigate the possible
redshift evolution of γ (z) through a new cosmologyindependent
method. Themethod is based on non-parametric
reconstruction using themeasurements ofHubble parameters
from cosmic chronometers. Unlike hydrodynamical simulations
suggesting constant depletion factor, our results reveal
the trend of γ (z) decreasing with redshift. This result is supported
by a parametricmodel fit as well as by calculations on
the reduced ACTPol sample and on the alternative sample of
91 SZ clusters reported earlier in ACT compilation. Discussion
of possible systematic effects leaves an open question
about validity of the empirical relation Mtot– fgas obtained
on very close clusters. These results might pave the way to
explore the hot gas fraction within large radii of galaxy clusters
as well as its possible evolution with redshift, which
should be studied further on larger galaxy cluster samples in
the upcoming X-ray/SZ cluster surveys. | 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 | Atacama Cosmology Telescope | pl_PL |
dc.subject | polarization experiment | pl_PL |
dc.title | The gas depletion factor in galaxy clusters: implication from Atacama Cosmology Telescope Polarization experiment measurements | 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/s10052-019-7143-3 | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
|