Zobrazeno 1 - 10
of 42
pro vyhledávání: '"José D. V. Arbañil"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 10, Pp 1-10 (2024)
Abstract In this work we study, within the framework of Cowling approximation, the effect of the electric charge on the gravitational wave frequency of fluid oscillation modes of strange quark stars. For this purpose, the dense matter of the stellar
Externí odkaz:
https://doaj.org/article/fbbb3292be19424eaed139972a3add9d
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 3, Pp 1-12 (2023)
Abstract In this work, we investigate the influence of the phase transition and a stiffer fluid in neutron stars’ cores on the static equilibrium configuration, dynamical stability, and tidal deformability. For this aim, it is taken into account th
Externí odkaz:
https://doaj.org/article/29058e6b5afb48f681fb7a9ff6623ed2
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 5, Pp 1-7 (2018)
Abstract The equilibrium configuration and the radial stability of white dwarfs composed of charged perfect fluid are investigated. These cases are analyzed through the results obtained from the solution of the hydrostatic equilibrium equation. We re
Externí odkaz:
https://doaj.org/article/4921814b622a464383617c141125b20d
Autor:
G. A. Carvalho, R. V. Lobato, P. H. R. S. Moraes, José D. V. Arbañil, E. Otoniel, R. M. Marinho, M. Malheiro
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 77, Iss 12, Pp 1-8 (2017)
Abstract In this work we investigate the equilibrium configurations of white dwarfs in a modified gravity theory, namely, f(R, T) gravity, for which R and T stand for the Ricci scalar and trace of the energy-momentum tensor, respectively. Considering
Externí odkaz:
https://doaj.org/article/754a691bce314c85b9f0255a0461fc7f
Publikováno v:
The Sixteenth Marcel Grossmann Meeting.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d39982f87ef0e80faada8df484c95c0
https://doi.org/10.1142/9789811269776_0380
https://doi.org/10.1142/9789811269776_0380
Publikováno v:
The Sixteenth Marcel Grossmann Meeting.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0949df763a9bee0fbf0fb72e5a95d97d
https://doi.org/10.1142/9789811269776_0375
https://doi.org/10.1142/9789811269776_0375
Autor:
José D. V. Arbañil, P. H. R. S. Moraes
Publikováno v:
The European Physical Journal Plus. 135
The effects of the cosmological constant on the static equilibrium configurations and stability against small radial perturbations of relativistic polytropic spheres are investigated. This study numerically solves the hydrostatic equilibrium equation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::684c468eef23f20a6ae8f8df9cdd7779
https://doi.org/10.1140/epjp/s13360-020-00368-x
https://doi.org/10.1140/epjp/s13360-020-00368-x
In this work, we make the first step to derive non-radial pulsation equations in extra dimensions and investigate how the $f$- and $p_1$-mode frequencies of strange quark stars, within the Cowling approximation, change with the number of dimensions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffea97afddd79944c5295b9d340801fe
Publikováno v:
The Astrophysical Journal. 921:138
We investigate the structure and stability against radial oscillations, pycnonuclear reactions, and inverse $\beta$-decay of hot white dwarfs. We regard that the fluid matter is made up for nucleons and electrons confined in a Wigner-Seitz cell surro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5446b9f0a0aa362253fc00b32300898a
https://doi.org/10.3847/1538-4357/ac1e8a
https://doi.org/10.3847/1538-4357/ac1e8a
In this work we derive a gravastar model in Randall-Sundrum II braneworld scenario. Gravastars (or gravitationally vacuum stars) were proposed by Mazur and Mottola as systems of gravitational collapse alternative to black holes. The external region o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b3e1d8900d85a53d21aea99aa69abc6
http://arxiv.org/abs/1909.11502
http://arxiv.org/abs/1909.11502