Head-on charged black hole mergers in Einstein-Maxwell-scalar theory can leave a scalarized remnant or dynamically lose scalar hair, depending on coupling strength and remnant charge.
Dark matter from primordial black holes would hold charge
4 Pith papers cite this work. Polarity classification is still indexing.
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Three distinct non-minimal curvature-EM couplings produce different enlargements or reductions of black hole shadows and alter photon ring separations in characteristic ways.
A sparse population of primordial charged compact objects is hypothesized with specific parameters and shown to face severe plasma-screening and neutralization constraints while failing to produce late-time acceleration in the homogeneous FLRW approximation.
Constraints on primordial charged naked singularities (astrons) show charge saturation and plasma screening limit their viability, with homogeneous energy density scaling as a^{-4} providing no late-time acceleration.
citing papers explorer
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Binary Black Hole Coalescence and the Dynamics of Scalar Hair in Einstein-Maxwell-Scalar Theory
Head-on charged black hole mergers in Einstein-Maxwell-scalar theory can leave a scalarized remnant or dynamically lose scalar hair, depending on coupling strength and remnant charge.
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Photon rings and shadows of black holes with non-minimal couplings between curvature and electromagnetic field
Three distinct non-minimal curvature-EM couplings produce different enlargements or reductions of black hole shadows and alter photon ring separations in characteristic ways.
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The Case for Astrons
A sparse population of primordial charged compact objects is hypothesized with specific parameters and shown to face severe plasma-screening and neutralization constraints while failing to produce late-time acceleration in the homogeneous FLRW approximation.
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Astrons: Reissner-Nordstr\"om Primordial Naked Singularities
Constraints on primordial charged naked singularities (astrons) show charge saturation and plasma screening limit their viability, with homogeneous energy density scaling as a^{-4} providing no late-time acceleration.