Zobrazeno 1 - 10
of 2 800
pro vyhledávání: '"Ospino, A."'
Publikováno v:
SYMMETRY, 16, 1422, (2024)
Exact solutions are presented which describe, either the evolution of fluid distributions corresponding to a ghost star (vanishing total mass), or describing the evolution of fluid distributions which attain the ghost star status at some point of the
Externí odkaz:
http://arxiv.org/abs/2411.04544
Anisotropy of local pressure distribution and dissipation are essential in understanding the evolution of the internal structure of compact objects and their observable characteristics. In this work, we reinterpret local pressure anisotropy in relati
Externí odkaz:
http://arxiv.org/abs/2410.18231
Publikováno v:
Symmetry 16, 562, (2024)
We explore an idea put forward many years ago by Zeldovich and Novikov concerning the existence of compact objects endowed with arbitrarily small mass. The energy-density of such objects, which we call ``Ghost stars'', is negative in some regions of
Externí odkaz:
http://arxiv.org/abs/2405.09480
Publikováno v:
Big Data Applications in Labor Economics, Part A
Publikováno v:
Symmetry, 16, 341, (2024)
A semi--numerical approach proposed many years ago for describing gravitational collapse in the post--quasi--static approximation, is modified in order to avoid the numerical integration of the basic differential equations the approach is based upon.
Externí odkaz:
http://arxiv.org/abs/2403.07550
Publikováno v:
Phys. Rev. D 109, 024005 (2024)
It is shown that the evolution of an axially and reflection symmetric fluid distribution, satisfying the Tolman condition for thermal equilibrium, is not accompanied by the emission of gravitational radiation. This result, which was conjectured by Bo
Externí odkaz:
http://arxiv.org/abs/2401.05959
Publikováno v:
Journal of Sustainable Development of Energy, Water and Environment Systems, Vol 12, Iss 4, Pp 1-18 (2024)
This study focuses on passive measures for thermal comfort in social interest housing in the Departamento del Magdalena, Colombia. The global context emphasises the importance of energy savings, especially in the construction sector, responsible for
Externí odkaz:
https://doaj.org/article/9dd95f1fe777492f9578e9b843d6d657
Autor:
Lea Dousset, Daniel C. Chambers, Angela Webster, Nicole Isbel, Scott Campbell, Carla Duarte, Louisa Collins, Diona Damian, Anne Tseng, Emma Karlsen, Olga Victoria Ilinsky, Susan Brown, Helmut Schaider, H. Peter Soyer, Daniel Ariza Ospino, Sam Hogarth, Alvin H. Chong, Victoria Mar, Scott McKenzie, Douglas Gin, Pablo Fernandez-Penas, Johannes S. Kern, Katja Loewe, Edwige Roy, Alan Herschtal, Kiarash Khosrotehrani
Publikováno v:
Trials, Vol 25, Iss 1, Pp 1-19 (2024)
Abstract Background Keratinocyte carcinomas such as basal cell carcinomas and squamous cell carcinomas are a major burden affecting morbidity and mortality in solid organ transplant recipients (SOTRs). Best treatment includes frequent skin checks for
Externí odkaz:
https://doaj.org/article/a1ac03e4f2c14c4e803667c3886b11b0
Publikováno v:
Global Journal of Environmental Science and Management, Vol 10, Iss 4, Pp 2115-2126 (2024)
BACKGROUND AND OBJECTIVES: In the Colombian Caribbean, some rural communities rely on self-generated energy due to their lack of connection to the national grid. This energy generated is achieved through a combination of combustion engines and renewa
Externí odkaz:
https://doaj.org/article/2d71bfac05a24eefb48794959328ddfc
Publikováno v:
Entropy 25, 1338 (2023)
We carry out a systematic study on the motion of test particles in the region inner to the naked singularity of a quasi--hyperbolically symmetric $\gamma$-metric. The geodesic equations are written and analyzed in detail. The obtained results are con
Externí odkaz:
http://arxiv.org/abs/2309.08409