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The imitation game reloaded: effective shadows of dynamically robust spinning Proca stars

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arxiv 2402.14919 v1 pith:US6CLZZB submitted 2024-02-22 gr-qc astro-ph.HE

Ivo Sengo , Pedro V.P. Cunha , Carlos A. R. Herdeiro , Eugen Radu This is my paper · ORCID
classification gr-qcastro-ph.HE
keywords dynamicallyrobustimagesprocasimilaritiesstarswhenaccretion
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We analyse the lensing images by dynamically robust rotating (mini-)Proca stars surrounded by thin accretion disks. Due to their peculiar geodesic structure we show that these images exhibit striking similarities with the ones of BHs, for appropriately chosen disk intensity profile, when imposing a GRMHD-motivated emission cut off. Additionally, and unlike the non-rotating case, these similarities prevail even when considering equatorial observations. This example illustrates how a horizonless compact object without light rings, with a plausible formation mechanism and dynamically robust, could mimic detailed features of black hole imagiology.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Spinning generalizations of Majumdar-Papapetrou multi-black hole spacetimes: light rings, lensing and shadows

    gr-qc 2025-02 conditional novelty 6.0 of 10

    For the Teo-Wan two-black-hole spacetime, light rings merge and annihilate in pairs, giving total counts of 4, 6, or 8, and the shadows mimic double-Kerr.

  2. The continuum spectrum of nonrelativistic multi-frequency Proca stars

    gr-qc 2026-03 conditional novelty 5.5 of 10

    At fixed particle number, spherical multi-frequency Proca stars form continuous 1- and 2-parameter families interpolating between discrete stationary states, and a subset with a nodeless component is linearly stable.

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