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Polarized Image of a Synchrotron-emitting Ring in Einstein-Maxwell-scalar Theory

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arxiv 2409.05304 v1 pith:TDTSUUQG submitted 2024-09-09 gr-qc

Yiqian Chen , Lang Cheng , Peng Wang , Haitang Yang This is my paper · ORCID
classification gr-qc
keywords blackholeshairycouplingeinstein-maxwell-scalarpolarizationpolarizedring
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This study investigates polarized images of an equatorial synchrotron-emitting ring surrounding hairy black holes within the Einstein-Maxwell-scalar theory. Our analysis demonstrates qualitative similarities between the polarization patterns of hairy black holes and Schwarzschild black holes. However, due to the non-minimal coupling between the scalar and electromagnetic fields, an increase in black hole charge and coupling constant can substantially amplify polarization intensity and induce deviations in the electric vector position angle. These effects may offer observational signatures to distinguish hairy black holes from Schwarzschild black holes.

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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. Polarized image of an equatorial emitting ring around a Konoplya-Zhidenko rotating non-Kerr black hole

    gr-qc 2025-12 conditional novelty 5.0 of 10

    In the Konoplya-Zhidenko non-Kerr spacetime, the deformation parameter systematically alters ring polarization intensity, EVPA, and Q-U loops, offering a possible future probe of deviations from Kerr.

  2. Semi-analytical Study on the Polarized Images of Black Hole due to Frame Dragging

    gr-qc 2025-08 unverdicted novelty 5.0 of 10

    Frame dragging flips an initially retrograde equatorial flow around a Kerr black hole, and the polarized image shows three distinct critical locations whose spatial hierarchy is derived analytically for an on-axis observer.

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