论文标题
出生式电动动力学中磁性带电的黑洞的观察性出现
Observational Appearances of Magnetically Charged Black Holes in Born-Infeld Electrodynamics
论文作者
论文摘要
在本文中，我们研究了出生的污染（BI）电动力学中磁性带电的黑洞的观察性外观。我们检查了磁电荷和BI参数对具有不同影响参数的大地测量学的影响。使用向后的射线追踪方法，我们研究了球形对称积聚如何与黑洞阴影和光子球相互作用。插入积聚的阴影比静态的阴影更暗。光子球的半径是时空的内在特性，独立于增生。然后，我们研究薄磁盘模型如何影响黑洞阴影。获得传递函数后，我们将从薄磁盘发出的光子分为三类：直接发射，镜头环和光子环。应用三个发射模型，我们发现阴影的宽度主要由直接发射，光子环和透镜环无法通过更改发射模型来识别。
In this paper, we investigate the observational appearances of magnetically charged black holes in Born-Infeld (BI) electrodynamics. We examine the effects of the magnetic charge and the BI parameter on the geodesics with different impact parameters. Using the backward ray tracing method, we investigate how spherically symmetric accretions interact with black hole shadows and photon spheres. The shadows of infalling accretion are darker than that of static ones. And the radius of the photon sphere is an intrinsic property of the spacetime that is independent of accretions. We then study how the thin disk models affect the black hole shadows. After obtaining the transfer functions, we divide photons emitted from the thin disk into three categories: direct emission, lens ring, and photon ring. Applying three emission models, we find that the width of the shadow is dominated by the direct emission, the photon ring and the lens ring can hardly be identified by changing the emission models.
