Pregled bibliografske jedinice broj: 235235
Gravastar Solutions with Continuous Pressures and Equation of State
Gravastar Solutions with Continuous Pressures and Equation of State // Classical and Quantum Gravity, 23 (2006), 2303-2316 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 235235 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Gravastar Solutions with Continuous Pressures and Equation of State
Autori
DeBenedictis, Andrew ; Horvat, Dubravko ; Ilijić, Saša ; Kloster, S. ; Viswanathan, K. S.
Izvornik
Classical and Quantum Gravity (0264-9381) 23
(2006);
2303-2316
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Gravastar
Sažetak
We study the gravitational vacuum star (gravastar) confguration as proposed by [1] in a model where the interior de Sitter spacetime segment is continuously extended to the exterior Schwarzschild spacetime. The multilayered structure of [2] - [4] is replaced by a continuous stress-energy tensor at the price of introducing anisotropy in the (fluid) model of the gravastar. Either with an ansatz for the equation of state connecting the radial pr and tangential pt pressure or with a calculated equation of state with non-homogeneous energy/fluid density, solutions are obtained which in all aspects satisfy the conditions expected for an anisotropic gravastar [1]. Certain energy conditions have been shown to be obeyed and a polytropic equation of state has been derived. Stability of the solution with respect to possible axial perturbation is shown to hold.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
