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Abstract <p>Within the framework of loop quantum gravity (LQG), a metric of a regular black hole is considered, in which the BH central singularity is replaced by a traversable tunnel. In addition, the investigated metric takes into account the effect of a tidal charge. Using the Newman–Janis algorithm, a rotating version of the given BH solution is obtained, for which the shadow profile is calculated. The shadow radii are compared with the constraints from the Event Horizon Telescope (EHT) observations. A slight discrepancy with the metrics of general relativity (GR) is revealed, which can be explained by the influence of quantum corrections on effects associated with rotation.</p>

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Shadows of Black Holes in Loop Quantum Gravity with Account for Rotation

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • S. O. Alexeyev,
  • E. A. Antonov,
  • O. I. Zenin

摘要

Abstract

Within the framework of loop quantum gravity (LQG), a metric of a regular black hole is considered, in which the BH central singularity is replaced by a traversable tunnel. In addition, the investigated metric takes into account the effect of a tidal charge. Using the Newman–Janis algorithm, a rotating version of the given BH solution is obtained, for which the shadow profile is calculated. The shadow radii are compared with the constraints from the Event Horizon Telescope (EHT) observations. A slight discrepancy with the metrics of general relativity (GR) is revealed, which can be explained by the influence of quantum corrections on effects associated with rotation.