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Dynamical scalarization in Schwarzschild binary inspirals
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abstract
We show that Schwarzschild black hole binaries can undergo dynamical scalarization (DS) in the inspiral phase, in a subclass of $\mathbb{Z}_2$-symmetric Einstein-scalar-Gauss-Bonnet (ESGB) theories of gravity. The mechanism is analogous to neutron star DS in scalar-tensor gravity, and it differs from the late merger and ringdown black hole (de)scalarization found in recent ESGB studies. To our knowledge, the new parameter space we highlight was unexplored in numerical relativity simulations. We also estimate the orbital separation at the DS onset, and characterize the subsequent scalar hair growth at the adiabatic approximation.
Forward citations
Cited by 2 Pith papers
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Scalar memory from compact binary coalescences
In Ricci-coupled scalar-Gauss-Bonnet gravity, the change in scalar charge during binary black hole mergers generates a scalar memory contribution that modifies the total memory signal on observable timescales.
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Signatures from metastable oppositely-charged black hole binaries in scalar Gauss-Bonnet gravity
In scalar Gauss-Bonnet gravity, inspiraling black holes with opposite scalar charges can undergo a sudden charge-flip, changing scalar radiation from dipolar to quadrupolar and inducing orbital eccentricity.
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