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“…The renewed interest in the possibility that primordial black holes (PBHs) may constitute a significant part of dark matter has provided motivation for revisiting old observational constraints, as well as developing new ones. …”
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“…Black holes are the simplest macroscopic objects, and provide unique tests of general relativity. …”
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“…Primordial black holes (PBHs) can represent all or most of the dark matter in the window 1017–1022  g. …”
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“…  The Hawking radiation is in the regime of linear dispersion, in analogy with a real black hole.  Furthermore, the radiation inside of the analogue black hole is seen to be composed of negative-energy partners only.…”
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“…We will also demonstrate how these models can be used to draw inferences on the axion parameter space, using astrophysical spin measurements of stellar binary and supermassive black hole systems, which can exclude the existence of fields spanning a large portion of the ultralight bosonic mass parameter space, via the superradiance phenomenon. …”
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“…With these methods we derive the third post-Minkowskian correction to the conservative two-body Hamiltonian for spinless black holes. We describe in some detail various checks of our integration methods and the resulting Hamiltonian.…”
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“…Primordial black holes can have substantial spin—a fundamental property that has a strong effect on its evaporation rate. …”
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“…Primordial black holes in the mass range from $10^{-5}$ to $10^9$ g might have existed in the early universe. …”
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“…We investigate the gravitational perturbations of the Schwarzschild black hole in the nonlocal gravity model recently proposed by Deser and Woodard. …”
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“…We discuss the possibility of forming primordial black holes during a first-order phase transition in the early Universe. …”
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“…Gravitational waveforms from coalescences of binary black hole and binary neutron star systems with low tidal effects can hardly be distinguished if the two systems have similar masses. …”
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“…Transposing this Minkowski-spacetime scattering result to a near-horizon spacetime region of a massive Schwarzschild black hole and referring to a previously proposed Gedankenexperiment, we conclude that, in principle, it is possible to have information transfer from inside the black-hole horizon to outside.…”
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“…Using this approach, holography predicts the presence of a gap between the BPS black holes and the lightest near-BPS black holes, and the spectrum of near-BPS states that lie above this gap. …”
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