GravSphere2 extends Jeans modeling to fourth order with LOS and PM data plus flexible anisotropy forms to recover mass density, anisotropy, and density slope in spherical stellar systems while breaking the mass-anisotropy degeneracy.
F., Mezcua M., 2024, Intermediate-Mass Black Holes in Star Clusters and Dwarf Galaxies ( @eprint arXiv 2311.12118 ), https://arxiv.org/abs/2311.12118
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LGWA could observe more than one third of known binary black hole events, detect ~90 mergers per year, and measure chirp mass better than third-generation detectors for massive systems.
N-body simulations demonstrate that the inspiral of globular clusters in UGC 7346 results in the formation of a nuclear star cluster with mass (4.1-4.5)×10^5 solar masses within 1.5 Gyr.
N-body simulations of a massive binary black hole in Leo I find orbital hardening to 1 pc followed by stalling due to the final parsec problem, with merger unlikely in a Hubble time owing to low stellar and dark matter densities.
Five O4 gravitational-wave events prefer dynamical cluster formation; typical recoil kicks eject remnants from globular clusters but allow possible retention in nuclear star clusters, disfavoring efficient hierarchical growth in globular clusters.
citing papers explorer
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GravSphere2: A higher-order Jeans method for mass-modeling spherical stellar systems
GravSphere2 extends Jeans modeling to fourth order with LOS and PM data plus flexible anisotropy forms to recover mass density, anisotropy, and density slope in spherical stellar systems while breaking the mass-anisotropy degeneracy.
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Gravitational-wave parameter estimation to the Moon and back: massive binaries and the case of GW231123
LGWA could observe more than one third of known binary black hole events, detect ~90 mergers per year, and measure chirp mass better than third-generation detectors for massive systems.
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Formation of a nuclear star cluster through the inspiral of globular clusters: A case study of the dwarf elliptical galaxy UGC 7346
N-body simulations demonstrate that the inspiral of globular clusters in UGC 7346 results in the formation of a nuclear star cluster with mass (4.1-4.5)×10^5 solar masses within 1.5 Gyr.
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Dark Matter's influence on Evolution of MBHB in Dwarf Galaxies: A Case Study of Leo I dSph
N-body simulations of a massive binary black hole in Leo I find orbital hardening to 1 pc followed by stalling due to the final parsec problem, with merger unlikely in a Hubble time owing to low stellar and dark matter densities.
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Remnant recoil and host environments of GWTC-4.0 binary black-hole mergers
Five O4 gravitational-wave events prefer dynamical cluster formation; typical recoil kicks eject remnants from globular clusters but allow possible retention in nuclear star clusters, disfavoring efficient hierarchical growth in globular clusters.