Zobrazeno 1 - 10
of 37
pro vyhledávání: '"J. L. Hernández-Pastora"'
Autor:
J. L. Hernández-Pastora, L. Herrera
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-9 (2023)
Abstract While it is known that any spherical fluid distribution may only source the spherically symmetric Schwarzschild space-time, the inverse is not true. Thus, in this manuscript, we find exact axially symmetric and static fluid (interior) soluti
Externí odkaz:
https://doaj.org/article/0e5da0f7f42b49ebae553554cb09e7d5
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 7, Pp 1-7 (2022)
Abstract Recent observations of the orbits of star clusters around Sgr $$A^\star $$ A ⋆ , imaging of black holes and gravitational waveforms of merging compact objects require a detailed understanding of the general relativistic geodesic motion. We
Externí odkaz:
https://doaj.org/article/28f7f22f500f4a1896e16a6990032465
Autor:
J. L. Hernández–Pastora
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 3, Pp 1-10 (2022)
Abstract Using an integral definition given in Hernández-Pastora et al. (Class Quantum Gravity 33:225009, 2016) to calculate the relativistic multipole moments (RMM), and the ensuing generalized relativistic Gauss theorem, we prove that the evaluati
Externí odkaz:
https://doaj.org/article/4b2c4917e49f43db8f51bf549c71dc67
Autor:
J. L. Hernández-Pastora
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-13 (2020)
Abstract A method to construct interior axially symmetric metrics that appropriately match with any vacuum solution of the Weyl family is developed in Hernández-Pastora et al. (Class Quantum Gravity 33:235005, 2016). It was shown, for the case of so
Externí odkaz:
https://doaj.org/article/1c25be5d46ab4a7b9db79ffb1a14b89e
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 7, Pp 1-1 (2022)
A Correction to this paper has been published: 10.1140/epjc/s10052-022-10544-1
Externí odkaz:
https://doaj.org/article/e37423caf1ff4c95b230815dc22eae8b
Publikováno v:
Expert Systems with Applications. 54:379-386
A novel encryption method for 3D biomedical objects is introduced.It is based on the use of cellular automata, boolean functions and discretized chaotic maps.The protocol involves two phases that produce confusion and diffusion.The encryption method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a85d5af4a46eb3460eadf02c75e8665
https://doi.org/10.1016/j.eswa.2016.02.001
https://doi.org/10.1016/j.eswa.2016.02.001
Publikováno v:
General Relativity and Gravitation. 50
By applying a recent method --based on a tetrad formalism in General Relativity and the orthogonal splitting of the Riemann tensor-- to the simple spherical static case, we found that the only static solution with homogeneous energy density is the Sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e6a734ea4d1a71388ac5720ddeaaed6
https://doi.org/10.1007/s10714-018-2467-0
https://doi.org/10.1007/s10714-018-2467-0
Autor:
J. L. Hernández-Pastora, L. Herrera
A, recently presented, general procedure to find static and axially symmetric, interior solutions to the Einstein equations, is extended to the stationary case, and applied to find an interior solution for the Kerr metric. The solution, which is gene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d43635df66cea76519aa2be4c90373c
http://arxiv.org/abs/1701.02098
http://arxiv.org/abs/1701.02098
Autor:
J. L. Hernández-Pastora
Publikováno v:
Classical and Quantum Gravity. 36:135004
The MSA system of coordinates [1] for the M Q-solution [2] is proved to be the unique solution of certain partial differential equation with boundary and asymptotic conditions. Such a differential equation is derived from the orthogonality condition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c09e8f9dadfa91b996d6176381d6679d
https://doi.org/10.1088/1361-6382/ab2410
https://doi.org/10.1088/1361-6382/ab2410
A general procedure to find static and axially symmetric, interior solutions to the Einstein equations is presented. All the so obtained solutions, verify the energy conditions for a wide range of values of the parameters, and match smoothly to some
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f39df0fb95096a41caaa14ebab0f831
http://arxiv.org/abs/1607.02315
http://arxiv.org/abs/1607.02315