论文标题
线性和非线性电动力学中电动电荷的黑洞：测量分析和标量吸收
Electrically charged black holes in linear and nonlinear electrodynamics: Geodesic analysis and scalar absorption
论文作者
论文摘要
在过去的几十年中，已经提出了几种常规的黑洞（BH）溶液，即无奇异性BHS，并与最小化与一般相对性的非线性电动力学模型相关联。在这种情况下，研究那些基于非线性电动力学的常规BHS（RBHS）如何与其天体物理环境相互作用是令人感兴趣的。我们研究了由EloyAyón-Beato和AlbertoGarcía获得的电荷RBH溶液背景中无质量测试标量场的传播。使用数值方法，我们计算无质量标量场的吸收横截面，以进行入射波频率的任意值。我们将Ayón-Beato和GarcíaRBH的吸收横截面与Reissner-NordströmBH进行了比较，这表明它们在整个频率状态下可能非常相似。
Along the last decades, several regular black hole (BH) solutions, i.e., singularity-free BHs, have been proposed and associated to nonlinear electrodynamics models minimally coupled to general relativity. Within this context, it is of interest to study how those nonlinear-electrodynamic-based regular BHs (RBHs) would interact with their astrophysical environment. We investigate the propagation of a massless test scalar field in the background of an electrically charged RBH solution, obtained by Eloy Ayón-Beato and Alberto García. Using a numerical approach, we compute the absorption cross section of the massless scalar field for arbitrary values of the frequency of the incident wave. We compare the absorption cross sections of the Ayón-Beato and García RBH with the Reissner-Nordström BH, showing that they can be very similar in the whole frequency regime.
