Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Santos, Marcelo Vargas dos"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 518, Issue 2, January 2023
Redshift measurement has always been a constant need in modern astronomy and cosmology. And as new surveys have been providing an immense amount of data on astronomical objects, the need to process such data automatically proves to be increasingly ne
Externí odkaz:
http://arxiv.org/abs/2212.14668
Autor:
Zhang, Jiajun, Motta, Pablo, Novaes, Camila P., Abdalla, Filipe B., Costa, Andre A., Wang, Bin, Zhu, Zhenghao, Shan, Chenxi, Xu, Haiguang, Abdalla, Elcio, Barosi, Luciano, Brito, Francisco A., Queiroz, Amilcar, Villela, Thyrso, Wuensche, Carlos A., Ferreira, Elisa G. M., Fornazier, Karin S. F., Marins, Alessandro, Santos, Larissa, Santos, Marcelo Vargas dos, Landim, Ricardo G., Liccardo, Vincenzo
Publikováno v:
A&A 664, A19 (2022)
BINGO (Baryon Acoustic Oscillations from Integrated Neutral Gas Observations.) is a radio telescope designed to survey from 980 MHz to 1260 MHz, observe the neutral Hydrogen (HI) 21-cm line and detect BAO (Baryon Acoustic Oscillation) signal with Int
Externí odkaz:
http://arxiv.org/abs/2107.01638
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 3, Page 2974, September 2020
The efficient classification of different types of supernova is one of the most important problems for observational cosmology. However, spectroscopic confirmation of most objects in upcoming photometric surveys, such as the The Rubin Observatory Leg
Externí odkaz:
http://arxiv.org/abs/1908.04210
Publikováno v:
Phys. Rev. D 97, 104010 (2018)
We investigate the efficiency of screening mechanisms in the hybrid metric-Palatini gravity. The value of the field is computed around spherical bodies embedded in a background of constant density. We find a thin shell condition for the field dependi
Externí odkaz:
http://arxiv.org/abs/1712.03831
Publikováno v:
Physics Letters B, Volume 769, 10 June 2017, Pages 485-490
We propose a new method to test modified gravity theories, taking advantage of the available data on extrasolar planets. We computed the deviations from the Kepler third law and use that to constrain gravity theories beyond General Relativity. We inv
Externí odkaz:
http://arxiv.org/abs/1603.03243
Publikováno v:
A&A 587, A132 (2016)
We have investigated structure formation in the $\gamma$ gravity $f(R)$ model with {\it N}-body simulations. The $\gamma$ gravity model is a proposal which, unlike other viable $f(R)$ models, not only changes the gravitational dynamics, but can in pr
Externí odkaz:
http://arxiv.org/abs/1601.05433
Publikováno v:
JCAP02(2016)066
We revisit the kink-like parametrization of the deceleration parameter q(z), which considers a transition, at $z_t$, from cosmic deceleration to acceleration. In this parametrization the initial, at $z \gg z_t$, value of the q-parameter is $q_i$, its
Externí odkaz:
http://arxiv.org/abs/1505.03814
Publikováno v:
Physical Review D 90, 127301 (2014)
The creation of cold dark matter cosmology model is studied beyond the linear perturbation level. The skewness is explicitly computed and the results are compared to those from the $\Lambda$CDM model. It is explicitly shown that both models have the
Externí odkaz:
http://arxiv.org/abs/1412.5203
Publikováno v:
Phys. Rev. D 89, 083524 (2014)
We investigate the creation of cold dark matter (CCDM) cosmology as an alternative to explain the cosmic acceleration. Particular attention is given to the evolution of density perturbations and constraints coming from recent observations. By assumin
Externí odkaz:
http://arxiv.org/abs/1404.2604
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jan2023, Vol. 518 Issue 2, p2385-2397, 13p
