Using S2 star periastron precession, the work constrains ultralight scalar dark matter mass ratios to below 10^{-3} or 1 and improves quadratic coupling bounds for masses 10^{-20} to 10^{-18} eV.
Amorimet al.(GRAVITY), Mon
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Bound states of a massive scalar field around topological stars form strictly normal modes, producing a hydrogen-like spectrum when the Compton wavelength exceeds the star size and localized states otherwise.
Quintessence shifts orbital radii, turning points, and zoom-whirl parameters for timelike geodesics around a magnetically charged black hole, producing burst-like gravitational waveforms whose phase, timing, and millihertz spectra are modified by the quintessence coupling.
citing papers explorer
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Constraining Ultralight Scalar Dark Matter in the Galactic Center with the S2 Orbit
Using S2 star periastron precession, the work constrains ultralight scalar dark matter mass ratios to below 10^{-3} or 1 and improves quadratic coupling bounds for masses 10^{-20} to 10^{-18} eV.
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Gravitational Atoms from Topological Stars
Bound states of a massive scalar field around topological stars form strictly normal modes, producing a hydrogen-like spectrum when the Compton wavelength exceeds the star size and localized states otherwise.
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Periodic Timelike Motion and Gravitational Wave Signatures around a Magnetically Charged Black Hole Surrounded by Quintessence
Quintessence shifts orbital radii, turning points, and zoom-whirl parameters for timelike geodesics around a magnetically charged black hole, producing burst-like gravitational waveforms whose phase, timing, and millihertz spectra are modified by the quintessence coupling.