Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Uendert Andrade"'
Autor:
Xiaoyun Shao, Rodrigo S. Gonçalves, Carlos A. P. Bengaly, Uendert Andrade, Gabriela C. Carvalho, Jailson Alcaniz
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 7, Pp 1-10 (2024)
Abstract In standard cosmology, the cosmic homogeneity scale is the transition scale above which the patterns arising from non-uniformities – such as groups and clusters of galaxies, voids, and filaments – become indistinguishable from a random d
Externí odkaz:
https://doaj.org/article/132b9ed74cb3464bad9e0bda3c7f5664
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 9, Pp 1-6 (2019)
Abstract We address the $$\simeq 4.4\sigma $$ ≃4.4σ tension between local and the CMB measurements of the Hubble Constant using simulated Type Ia Supernova (SN) data-sets. We probe its directional dependence by means of a hemispherical comparison
Externí odkaz:
https://doaj.org/article/1421ae59cb904dc1b966b2ed5c72f8e1
Autor:
Uendert Andrade, Rodrigo S. Gonçalves, Gabriela C. Carvalho, Carlos A. P. Bengaly, Joel C. Carvalho, Jailson Alcaniz
We report measurements of the angular scale of cosmic homogeneity ($\theta_{H}$) using the recently released luminous red galaxy sample of the sixteenth data release of the Sloan Digital Sky Survey (SDSS-IV LRG DR16). It consists of a model-independe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9e29b64b892e9ee72b7b828dbe33431
We perform a general test of the $\Lambda{\rm CDM}$ and $w {\rm CDM}$ cosmological models by comparing constraints on the geometry of the expansion history to those on the growth of structure. Specifically, we split the total matter energy density, $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::117776b5e1fffd4426383b6c1a279ff7
The assumption of homogeneity and isotropy on large scales is one of the main hypotheses of the standard cosmology. In this paper, we test the hypothesis of isotropy from the two-point angular correlation function of 2626 gamma-ray bursts (GRB) of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f01fa28f46f13c7772a2ba523f07549e
http://hdl.handle.net/11588/780800
http://hdl.handle.net/11588/780800
Autor:
Carlos A. P. Bengaly, Uendert Andrade, Joel C. Carvalho, G. C. Carvalho, Jailson S. Alcaniz, R. S. Gonçalves
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2021:029
We report measurements of the scale of cosmic homogeneity ($r_{h}$) using the recently released quasar sample of the sixteenth data release of the Sloan Digital Sky Survey (SDSS-IV DR16). We perform our analysis in 2 redshift bins lying in the redshi
Publikováno v:
European Physical Journal
European Physical Journal C: Particles and Fields, Vol 79, Iss 9, Pp 1-6 (2019)
European Physical Journal C: Particles and Fields, Vol 79, Iss 9, Pp 1-6 (2019)
We address the $\simeq 4.4\sigma$ tension between local and the CMB measurements of the Hubble Constant using simulated Type Ia Supernova (SN) data-sets. We probe its directional dependence by means of a hemispherical comparison through the entire ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89a468019b4da8f5045d00a09b3aaf54
http://arxiv.org/abs/1810.04966
http://arxiv.org/abs/1810.04966
The standard cosmology strongly relies upon the Cosmological Principle, which consists on the hypotheses of large scale isotropy and homogeneity of the Universe. Testing these assumptions is, therefore, crucial to determining if there are deviations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c38421b3a0e38f31b4b8c63e7ed2535
Publikováno v:
The Astrophysical Journal. 865:119
The assumption of homogeneity and isotropy on large scales is one of the main hypotheses of the standard cosmological model. In this paper, we revisit a test of cosmological isotropy using type Ia supernova (SN Ia) distances provided by the latest SN
Publikováno v:
Astrophysical Journal; 10/1/2018, Vol. 865 Issue 2, p1-1, 1p