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arXiv · 2502.17032

A Multipole-Based Framework for Kerr Black Hole Mimickers: From General Construction to a Specific Case of Study

Claudio Gambino
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Abstract

We present a novel systematic framework for engineering energy-momentum tensors in linearized gravity that generate gravitational fields with a prescribed multipolar structure, aimed at modeling black hole mimickers. As a concrete example, we analyze an anisotropic rotating fluid with a Gaussian-like energy-density profile which, at linearized order, satisfies all energy and causality conditions while generating a gravitational field that exactly reproduces the multipolar structure of a Kerr black hole. We then investigate the phenomenology of both the source and the induced metric, comparing our findings with the corresponding black hole limit.

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Claudio Gambino. 2025-02-24. A Multipole-Based Framework for Kerr Black Hole Mimickers: From General Construction to a Specific Case of Study. https://arxiv.org/abs/2502.17032

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