论文标题
QED对黑洞阴影的影响
QED Effect on Black Hole Shadow
论文作者
论文摘要
在这项工作中，考虑到QED效果，我们通过数值向后射线追踪方法研究了带有磁性单极和中性黑洞的静态黑洞的阴影。对于带有磁性单极的静态黑洞，我们获得了阴影半径与耦合常数之间的关系。对于均匀磁场中的中性黑洞，我们发现阴影曲线与赤道观察者的椭圆相差很小，并且我们读取偏心率与耦合常数之间的线性关系。对于$θ_O\neqπ/2 $，我们发现在大多数情况下，椭圆曲线可以很好地近似，除了磁场非常强，观察者位于角度$θ_O=π/4 $或$3π/4 $外。此外，我们将研究扩展到一个被电流环包围的中性静态黑洞。
In this work, taking the QED effect into account, we investigate the shadows of the static black hole with magnetic monopoles and neutral black holes in magnetic fields through the numerical backward ray-tracing method. For a static black holes with magnetic monopole, we obtain the relation between the shadow radius and the coupling constant. For neutral black holes in the uniform magnetic fields, we find that the shadow curves deviate very small from the ellipses for equatorial observer, and we read the linear relation between the eccentricity and the coupling constant. For $θ_o\neqπ/2$, we find that the shadow curves can be well approximated by ellipses in most cases, except the case that the magnetic field is very strong and the observer sits around the angle $θ_o=π/4$ or $3π/4$. Moreover we extend our investigation to a neutral static black hole surrounded with a current loop.
