论文标题
用潮汐电荷的旋转黑洞的标量吸收横截面
Scalar absorption cross section of rotating black holes with tidal charge
论文作者
论文摘要
在Randall-Sundrum Brane-World场景中，用于无质量标量波的旋转黑洞的吸收横截面是通过部分波方法获得的。考虑了相对于黑洞旋转轴的多种发病率方向。特别注意接近极端的黑洞，在这种情况下，随着潮汐电荷变得更加负面，吸收横截面的增加。结果表明，具有不同配置的黑洞可以呈现捕获相同大小的截面/阴影。但是，在这种情况下，吸收光谱主要不同于小频率。将数字结果与高频极限的捕获横截面进行比较，而在低频限制中的黑洞面积显示出良好的一致性。
The absorption cross section of rotating black holes in the Randall-Sundrum brane-world scenario for massless scalar waves is obtained via the partial-wave method. A variety of incidence directions with respect to the black hole rotation axis is considered. Special attention is given to near-extreme black holes, in which cases the absorption cross section increases as the tidal charge becomes more negative. It is shown that black holes with different configurations can present capture cross sections/shadows of same size. However, in such cases, the absorption spectra are different mainly for small frequencies. Numeric results are compared with the capture cross sections in the high-frequency limit, and with the black hole area in the low-frequency limit showing good agreement.
