Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Pedro H. R. S. Moraes"'
Autor:
Lucas M. de Sá, Antônio Bernardo, Riis R. A. Bachega, Livia S. Rocha, Pedro H. R. S. Moraes, Jorge E. Horvath
Publikováno v:
Galaxies, Vol 11, Iss 1, p 19 (2023)
The study of compact object populations has come a long way since the determination of the mass of the Hulse–Taylor pulsar, and we now count on more than 150 known Galactic neutron stars and black hole masses, as well as another 180 objects from bi
Externí odkaz:
https://doaj.org/article/3e0b0d1f7b8649b2b85f4e746cfafbf9
Publikováno v:
Universe, Vol 9, Iss 1, p 12 (2022)
The standard formulation of General Relativity Theory, in the absence of a cosmological constant, is unable to explain the responsible mechanism for the observed late-time cosmic acceleration. On the other hand, by inserting the cosmological constant
Externí odkaz:
https://doaj.org/article/6c2bdadd39de4acb85a8e110d3561167
Publikováno v:
Universe, Vol 7, Iss 3, p 67 (2021)
In the present article, we investigate the physical acceptability of the spatially homogeneous and isotropic Friedmann–Lemâitre–Robertson–Walker line element filled with two fluids, with the first being pressureless matter and the second being
Externí odkaz:
https://doaj.org/article/f590f03b5b3242dda9441a8293efe533
Autor:
Pedro H. R. S. Moraes
Publikováno v:
New Phenomena and New States of Matter in the Universe ISBN: 9789811220906
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::356be768d7d0e50bdc15c309e598ac02
https://doi.org/10.1142/9789811220913_0007
https://doi.org/10.1142/9789811220913_0007
Autor:
Jorge E. Horvath, Antônio L. C. Bernardo, Riis R. A. Bachega, Lucas M. de Sá, Livia S. Rocha, Pedro H. R. S. Moraes
Publikováno v:
Astronomische Nachrichten. 344
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35df1a8e43c2a44df4602b36a801fd38
https://doi.org/10.1002/asna.20220106
https://doi.org/10.1002/asna.20220106
Publikováno v:
Advances in Astronomy. 2019:1-8
In this paper we derive a novel cosmological model from the f(R,T) theory of gravitation, for which R is the Ricci scalar and T is the trace of the energy-momentum tensor. We consider the functional form f(R,T)=f(R)+f(T), with f(R) being the Starobin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d6c2ae63c5d76c58daf343390243149
https://doi.org/10.1155/2019/8574798
https://doi.org/10.1155/2019/8574798
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-7 (2020)
European Physical Journal
European Physical Journal
In this work we analyze hydrostatic equilibrium configurations of neutron stars in a non-minimal geometry-matter coupling (GMC) theory of gravity. We begin with the derivation of the hydrostatic equilibrium equations for the $f(R,L) $ gravity theory,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c6f975e4074d524c9fb2151041a03b8
https://doi.org/10.1140/epjc/s10052-020-7958-y
https://doi.org/10.1140/epjc/s10052-020-7958-y
Autor:
Manuel Malheiro, Pedro H. R. S. Moraes, M.G.B. de Avellar, Odilon Lourenço, R. V. Lobato, Mariana Dutra, C. H. Lenzi, W. de Paula
In this work we investigate neutron stars (NS) in $f(\mathcal{R,T})$ gravity for the case $R+2\lambda\mathcal{T}$, $\mathcal{R}$ is the Ricci scalar and $\mathcal{T}$ the trace of the energy-momentum tensor. The hydrostatic equilibrium equations are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab807b6d58a7c357c110aff0cee6a239
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
Autor:
Pedro H. R. S. Moraes, P. K. Sahoo
Publikováno v:
European Physical Journal
European Physical Journal C: Particles and Fields, Vol 79, Iss 8, Pp 1-6 (2019)
European Physical Journal C: Particles and Fields, Vol 79, Iss 8, Pp 1-6 (2019)
Alternative gravity is nowadays an extremely important tool to address some persistent observational issues, such as the dark sector of the universe. They can also be applied to stellar astrophysics, leading to outcomes one step ahead of those obtain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13ed6d01f014207b66676e42a9759c85
http://repo.scoap3.org/api
http://repo.scoap3.org/api