论文标题
稳定的有界游览板和常规黑洞
Stable Bounded Excursion Gravastars with Regular Black Holes
论文作者
论文摘要
本文探讨了在常规黑洞（Bardeen和Bardeen-de保姆黑洞）背景下有界游览板的稳定区域的可能存在。为此，我们通过具有状态方程的中间外壳与外部常规黑洞进行匹配。位于壳上的物质表面极大地影响了壳的动态配置。我们考虑僵硬和灰尘流体来讨论开发结构的结果。然后，我们确定物理参数的临界值，在该物理参数中，壳既不会崩溃，也不会在两种情况下都有不同选择的外部和内部几何形状。发现不存在内部平坦和外部常规几何形状的稳定边界偏移板的任何可能区域。但是，对于内部DE保姆和外部常规黑洞，获得了稳定的有界游览板，并为刚性和灰尘壳提供了合适的物理参数。我们得出的结论是，在动力学模型中不能排除界面偏移式静脉的存在以及黑洞的可能性。
This paper explores the possible existence of stable regions of bounded excursion gravastars in the background of regular black holes (Bardeen and Bardeen-de Sitter black holes). For this purpose, we match internal de Sitter geometry with an external regular black hole through an intermediate shell with an equation of state. The matter surface located at the shell greatly affects the dynamical configuration of the shell. We consider stiff and dust fluids to discuss the outcomes of the developed structures. We then determine the critical values of physical parameters at which the shell neither collapses nor expands for both cases with different choices of external and internal geometries. It is found that there does not exist any possible region of stable bounded excursion gravastar for the interior flat and exterior regular geometries. However, the stable bounded excursion gravastar is obtained for the interior de Sitter and exterior regular black holes with a suitable choice of physical parameters for both stiff and dust shells. We conclude that the possibility of the existence of both bounded excursion gravastars as well as black holes cannot be excluded in the dynamical model.
