Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Alcaniz, Jailson S."'
Publikováno v:
Phys.Rev.D 109 (2024) 12, 123533
We use a recent Pantheon+SH0ES compilation of Type Ia Supernova distance measurements at low-redshift, i.e., $0.01 \leq z \leq 0.10$, in order to investigate the directional dependency of the deceleration parameter ($q_0$) in different patches ($60^{
Externí odkaz:
http://arxiv.org/abs/2402.17741
Publikováno v:
Eur. Phys. J. C 83 (2023) 1128
Fast Radio Bursts (FRBs) are millisecond transient radio events with a high energy. By identifying the origin of the \textbf{burst}, it is possible to measure the redshift of the host galaxy, which can be used to constrain cosmological and astrophysi
Externí odkaz:
http://arxiv.org/abs/2307.06911
Autor:
Alcaniz, Jailson S., Neto, Jacinto P., Queiroz, Farinaldo S., da Silva, Deivid R., Silva, Raimindo
The Standard Cosmological Model has experienced tremendous success at reproducing observational data by assuming a universe dominated by a cosmological constant and dark matter in a flat geometry. However, several studies, based on local measurements
Externí odkaz:
http://arxiv.org/abs/2211.14345
Publikováno v:
Eur. Phys. J. C 83 (2023) 138
Fast Radio Bursts (FRBs) are millisecond-duration radio transients with an observed dispersion measure ($DM$) greater than the expected Milky Way contribution, which suggests that such events are of extragalactic origin. Although some models have bee
Externí odkaz:
http://arxiv.org/abs/2205.07926
In this work, we revisit the non-minimally coupled Higgs Inflation scenario and investigate its observational viability in light of the current Cosmic Microwave Background, Baryon Acoustic Oscillation and type Ia Supernovae data. We explore the effec
Externí odkaz:
http://arxiv.org/abs/2105.07009
Publikováno v:
The European Physical Journal C volume 80, Article number: 936 (2020)
The measurement of present-day temperature of the Cosmic Microwave Background (CMB), $T_0 = 2.72548 \pm 0.00057$ K (1$\sigma$), made by the Far-InfraRed Absolute Spectrophotometer (FIRAS), is one of the most precise measurements ever made in Cosmolog
Externí odkaz:
http://arxiv.org/abs/2007.13789
Autor:
Resco, Miguel Aparicio, Maroto, Antonio L., Alcaniz, Jailson S., Abramo, L. Raul, Hernández-Monteagudo, C., Benítez, N., Carneiro, S., Cenarro, A. J., Cristóbal-Hornillos, D., Dupke, R. A., Ederoclite, A., López-Sanjuan, C., Marín-Franch, A., Moles, M., Oliveira, C. M., Sodré Jr, L., Taylor, K., Varela, J., Ramió, H. Vázquez
Publikováno v:
MNRAS 493 (2020) 3616-3631
The next generation of galaxy surveys will allow us to test one of the most fundamental assumptions of the standard cosmology, i.e., that gravity is governed by the general theory of relativity (GR). In this paper we investigate the ability of the Ja
Externí odkaz:
http://arxiv.org/abs/1910.02694
Autor:
Benetti, Micol, Miranda, Welber, Borges, Humberto A., Pigozzo, Cassio, Carneiro, Saulo, Alcaniz, Jailson S.
Publikováno v:
JCAP 1912 (2019) 023
We study observational signatures of non-gravitational interactions between the dark components of the cosmic fluid, which can be either due to creation of dark particles from the expanding vacuum or an effect of the clustering of a dynamical dark en
Externí odkaz:
http://arxiv.org/abs/1908.07213
The possibility of variation of the fundamental constants of nature has been a long-standing question, with important consequences for fundamental physics and cosmology. In particular, it has been shown that variations in the fine-structure constant,
Externí odkaz:
http://arxiv.org/abs/1907.02118
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:
http://arxiv.org/abs/1905.08864