Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Nucamendi, Ulises"'
Publikováno v:
Eur. Phys. J. C 84 (2024) 583
Motivated by recent achievements of a full general relativistic method in estimating the mass-to-distance ratio of supermassive black holes hosted at the core of active galactic nuclei, we introduce the new concept redshift rapidity in order to expre
Externí odkaz:
http://arxiv.org/abs/2312.07426
With focus on the cosmological evolution of linear perturbations of matter and geometry, we calculate the equivalent expressions to that of the Newtonian and Synchronous gauges within the framework of Unimodular Gravity, being these two gauges common
Externí odkaz:
http://arxiv.org/abs/2307.04873
Publikováno v:
Phys. Rev. D 107, 104041 (2023)
We extract the Hubble law by the frequency-shift considerations of test particles revolving the Kerr black hole in asymptotically de Sitter spacetime. To this end, we take into account massive geodesic particles circularly orbiting the Kerr-de Sitter
Externí odkaz:
http://arxiv.org/abs/2302.11547
Autor:
De Arcia, Roberto, Quiros, Israel, Nucamendi, Ulises, Gonzalez, Tame, Horta-Rangel, Francisco Antonio, Eenens, Philippe
Publikováno v:
Phys. Dark Univ. 40 (2023) 101183
In this paper we perform a thorough dynamical systems analysis of the cubic galileon model non-minimally coupled to the dark matter. Three well-known classes of interacting models are considered where the energy exchange between the dark components i
Externí odkaz:
http://arxiv.org/abs/2206.14333
Autor:
Villalobos-Ramirez, Artemisa, Gallardo-Rivera, Oswaldo, Herrera-Aguilar, Alfredo, Nucamendi, Ulises
Publikováno v:
A&A 662, L9 (2022)
In this work we make use of a general relativistic method to estimate the mass-to-distance ratio M/D = 3.54^{+0.2}_{-0.2} X 10^4 M_{sun}/Mpc of the black hole hosted at the core of the active galactic nucleus of TXS 2226-184, along with its Right Asc
Externí odkaz:
http://arxiv.org/abs/2206.00039
Publikováno v:
JCAP08(2022)009
Modified theories of gravity yield an effective dark energy in the background dynamics that achieves an accelerated expansion of the universe. In addition, they present a fifth force that induces gravitational signatures in structure formation, and t
Externí odkaz:
http://arxiv.org/abs/2205.05755
Publikováno v:
Phys. Rev. D 106, 024039 (2022)
In this paper, we investigate the Penrose process in the purlieus of the axially symmetric magnetized Reissner-Nordstr\"{o}m black hole for both neutral and charged particles. We start with the study of the geometry of the black hole and find the reg
Externí odkaz:
http://arxiv.org/abs/2204.02026
Publikováno v:
Phys. Rev. D 105 (2022) 124037
In this work, we elaborate on the development of a general relativistic formalism that allows one to analytically express the mass and spin parameters of the Kerr black hole in terms of observational data: the total redshift and blueshift of photons
Externí odkaz:
http://arxiv.org/abs/2203.09092
Publikováno v:
Eur. Phys. J. C (2021) 81:1063
We apply the tools of the dynamical system theory in order to revisit and uncover the structure of a nongravitational interaction between pressureless dark matter and dark energy described by a scalar field $\phi$. For a coupling function $Q = -(\alp
Externí odkaz:
http://arxiv.org/abs/2104.07690
We construct from first principles a general relativistic approach to study Schwarzschild black hole (BH) rotation curves and estimate the mass-to-distance ratio of the active galactic nucleus of NGC 4258 in terms of astrophysical observable quantiti
Externí odkaz:
http://arxiv.org/abs/2012.05487