Image features of spinning regular black holes based on a locality principle
CP3-Origins, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
2 Theory Group, Blackett Laboratory, Imperial College London, SW7 2AZ, London, UK
Accepted: 2 October 2021
Published online: 21 October 2021
To understand the true nature of black holes, fundamental theoretical developments should be linked all the way to observational features of black holes in their natural astrophysical environments. Here, we take several steps to establish such a link. We construct a family of spinning, regular black-hole spacetimes based on a locality principle for new physics and analyze their shadow images. We identify characteristic image features associated to regularity (increased compactness and relative stretching) and to the locality principle (cusps and asymmetry) that persist in the presence of a simple analytical disk model. We conjecture that these occur as universal features of distinct classes of regular black holes based on different sets of construction principles for the corresponding spacetimes.
© The Author(s) 2021
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