Zobrazeno 1 - 10
of 217
pro vyhledávání: '"Novaes C"'
We investigate the growth rate of structures in the local Universe. For this, we use as a cosmological tracer the HI line extra-galactic sources from the Arecibo Legacy Fast ALFA (ALFALFA) survey to obtain a measurement of the normalized growth rate
Externí odkaz:
http://arxiv.org/abs/2105.10583
Publikováno v:
A&A 649, A20 (2021)
We measure the transverse baryon acoustic oscillations (BAO) signal in the local Universe using a sample of blue galaxies from the Sloan Digital Sky Survey (SDSS) survey as a cosmological tracer. The method is weakly dependent on a cosmological model
Externí odkaz:
http://arxiv.org/abs/2103.14121
Publikováno v:
MNRAS 492, 2020, 4469-4476
The clustering properties of the Universe at large-scales are currently being probed at various redshifts through several cosmological tracers and with diverse statistical estimators. Here we use the three-point angular correlation function (3PACF) t
Externí odkaz:
http://arxiv.org/abs/2002.01109
We probe the angular scale of homogeneity in the local Universe using blue galaxies from the SDSS survey as a cosmological tracer. Through the scaled counts in spherical caps, $ \mathcal{N}(<\theta) $, and the fractal correlation dimension, $\mathcal
Externí odkaz:
http://arxiv.org/abs/1906.10744
Publikováno v:
JCAP12 (2018) 041
We use the scaled counts in spherical caps $\mathcal{N}(<\theta)$ and the fractal correlation dimension $ \mathcal{D}_{2}(\theta) $ procedures to search for a transition scale to homogeneity in the local universe as given by the ALFALFA catalogue (a
Externí odkaz:
http://arxiv.org/abs/1806.04541
The presence of matter in the path of relic photons causes distortions in the angular pattern of the cosmic microwave background (CMB) temperature fluctuations, modifying their properties in a slight but measurable way. Recently, the Planck Collabora
Externí odkaz:
http://arxiv.org/abs/1708.09793
Following a quasi model-independent approach we measure the transversal BAO mode at high redshift using the two-point angular correlation function (2PACF). The analyses done here are only possible now with the quasar catalogue from the twelfth data r
Externí odkaz:
http://arxiv.org/abs/1709.00113
Publikováno v:
MNRASL, 475, Issue 1, 2018, L106-L110
We probe the isotropy of the Universe with the largest all-sky photometric redshift dataset currently available, namely WISE~$\times$~SuperCOSMOS. We search for dipole anisotropy of galaxy number counts in multiple redshift shells within the $0.10 <
Externí odkaz:
http://arxiv.org/abs/1707.08091
Publikováno v:
MNRAS (2016) 464 (1): 768-774
We probe the anisotropy of the large-scale structure (LSS) with the WISE-2MASS catalogue. This analysis is performed by a directional comparison of the galaxy number counts through the entire celestial sphere once systematic effects, such as star-gal
Externí odkaz:
http://arxiv.org/abs/1606.06751
Minkowski Functionals (MF) are excellent tools to investigate the statistical properties of the cosmic background radiation (CMB) maps. Between their notorious advantages is the possibility to use them efficiently in patches of the CMB sphere, which
Externí odkaz:
http://arxiv.org/abs/1606.04075