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By using the working hypothesis of a Kerr black hole (BH), the Event Horizon Telescope was able to map M87* to the Kerr BH, and it was shown that the observed image of M87* is generally consistent with what would be expected for a Kerr black hole’s shadow. Here, it is demonstrated that M87* is not certainly a Kerr BH, but rather that it might be a Kerr naked singularity, or a BH/naked singularity with a gravitomagnetic monopole, since the alternatives to the Kerr BH cannot be ruled out.

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Was it Really a Kerr Black Hole That EHT Imaged in 2019?

  • 会议论文

  • 发表日期：

    2025年

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  • Chandrachur Chakraborty

摘要

By using the working hypothesis of a Kerr black hole (BH), the Event Horizon Telescope was able to map M87* to the Kerr BH, and it was shown that the observed image of M87* is generally consistent with what would be expected for a Kerr black hole’s shadow. Here, it is demonstrated that M87* is not certainly a Kerr BH, but rather that it might be a Kerr naked singularity, or a BH/naked singularity with a gravitomagnetic monopole, since the alternatives to the Kerr BH cannot be ruled out.