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Scale invariant elastic stars in General Relativity

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arxiv 2306.16584 v2 pith:23RA4N5Q submitted 2023-06-28 gr-qc

classification gr-qc
keywords compactelasticgeneralradiusrelativityscalestarsabsence
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We present a model of relativistic elastic stars featuring scale invariance. This implies a linear mass-radius relation and the absence of a maximum mass. The most compact spherically symmetric configuration that is radially stable and satisfies all energy and causality conditions has a slightly smaller radius than the Schwarzschild light ring radius. To the best of our knowledge, this is the first material compact object with such remarkable properties in General Relativity, which makes it a unique candidate for a black-hole mimicker.

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Cited by 1 Pith paper

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  1. Beyond Buchdahl's limit: bilayered stars and thin-shell configurations

    gr-qc 2024-11 conditional novelty 6.0 of 10

    Explicit bilayered and thin-shell GR models show that relaxing monotonic density or isotropy lets compactness approach Bondi's bound or even the black hole limit.

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