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From a locality-principle for new physics to image features of regular spinning black holes with disks
Journal of Cosmology and Astroparticle Physics ( IF 5.3 ) Pub Date : 2021-05-27 , DOI: 10.1088/1475-7516/2021/05/073
Astrid Eichhorn 1 , Aaron Held 2
Affiliation  

Current observations present unprecedented opportunities to probe the true nature of black holes, which must harbor new physics beyond General Relativity to provide singularity-free descriptions. To test paradigms for this new physics, it is necessary to bridge the gap all the way from theoretical developments of new-physics models to phenomenological developments such as simulated images of black holes embedded in astrophysical disk environments.

In this paper, we construct several steps along this bridge. We construct a novel family of regular black-hole spacetimes based on a locality principle which ties new physics to local curvature scales. We then characterize these spacetimes in terms of a complete set of curvature invariants and analyze the ergosphere and both the outer event as well as distinct Killing horizon. Our comprehensive study of the shadow shape at various spins and inclinations reveals characteristic image features linked to the locality principle. We also explore the photon rings as an additional probe of the new-physics effects. A simple analytical disk model enables us to generate simulated images of the regular spinning black hole and test whether the characteristic image-features are visible in the intensity map.



中文翻译:

从新物理学的局域性原理到带圆盘的规则旋转黑洞的图像特征

当前的观测为探索黑洞的真实本质提供了前所未有的机会,黑洞必须拥有超越广义相对论的新物理学,以提供无奇点的描述。为了测试这种新物理学的范式,有必要弥合从新物理学模型的理论发展到现象学发展(例如嵌入天体物理盘环境中的黑洞的模拟图像)之间的差距。

在本文中,我们沿着这座桥构建了几个步骤。我们基于局域原理构建了一个新的规则黑洞时空族,该原理将新物理学与局域曲率尺度联系起来。然后,我们根据一组完整的曲率不变量来表征这些时空,并分析能层和外部事件以及不同的杀戮地平线。我们对各种旋转和倾斜的阴影形状的综合研究揭示了与局部性原理相关的特征图像特征。我们还探索光子环作为新物理效应的额外探针。一个简单的分析圆盘模型使我们能够生成规则旋转黑洞的模拟图像,并测试特征图像特征在强度图中是否可见。

更新日期:2021-05-27
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