带电星、规则黑洞、准黑洞和准非黑洞的稳定性
Stability of electrically charged stars, regular black holes, quasiblack holes, and quasinonblack holes
摘要：
研究了一类带电流体球在径向扰动下的稳定性。在这些球体中有规则星、过充张力星、规则黑洞、准黑洞和类非黑洞，它们都具有Reissner-Nordström外部。我们制定的动力学摄动方程以下的Eschrasekhar方法和研究的稳定性对径向摄动通过数值方法。我们发现：（i）在依赖于径向扰动绝热指数的一定条件下，存在稳定的带电星和稳定的张力星;（ii）依赖于绝热指数，存在稳定的规则黑洞;（iii）准黑洞组态，例如，充电经常压力星或放电经常紧张星，可以稳定对径向扰动的合理值的绝热指数;（四）quasinonblack洞是不稳定的对径向扰动。
英文摘要：
The stability of a class of electrically charged fluid spheres under radial perturbations is studied. Among these spheres there are regular stars, overcharged tension stars, regular black holes, quasiblack holes, and quasinonblack holes, all of which have a Reissner-Nordström exterior. We formulate the dynamical perturbed equations by following the Chandrasekhar approach and investigate the stability against radial perturbations through numerical methods. It is found that (i) under certain conditions that depend on the adiabatic index of the radial perturbation, there are stable charged stars and stable tension stars; (ii) also depending on the adiabatic index there are stable regular black holes; (iii) quasiblack hole configurations formed by, e.g., charging regular pressure stars or by discharging regular tension stars, can be stable against radial perturbations for reasonable values of the adiabatic index; (iv) quasinonblack holes are unstable against radial perturbations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
