Binary black-hole mergers as hydrogen-like gravitational molecules

CHAPTER 14: Binary Black-Hole Mergers as Hydrogen-Like Gravitational Molecules

We develop a quantum-geometrical model of binary black-hole coalescence within the Nexus Paradigm (NP), in which black holes are represented by quantized Ricci-soliton states with eigen-radii rn = n2GM/c2. Binary configurations are formulated as coupled two-centre gravitational eigenstates whose evolution is described...

Is a Black Hole a Neutron Star? A Finite-Density Core Hypothesis

Collisions of Multiple Black Holes: A Numerical Relativity Study

Numerical relativity has a profound impact on gravitational theory and gravitational wave astronomy. In this work, we present a systematic study of the head-on collisions of multipule black hole systems within the framework of numerical relativity using the Baumgarte-Shapiro-Shibata-Nakamura (BSSN) formulation. The num...

Chaotic signatures in extreme-mass-ratio systems surrounded by bosonic environments

Extreme-mass-ratio inspirals are key gravitational-wave sources for testing strong gravity and the environments of massive black holes. While orbital motion in Kerr black hole spacetimes is integrable, realistic black holes may be surrounded by environments that break integrability. We investigate conservative orbital...

Dynamical pairing in gravitational wave populations

Binary black holes formed dynamically in star clusters are often associated with nearly equal-mass pairing. We show that this expectation is incomplete. The more general prediction of dynamical assembly is an ordered-pairing relation in which the two black holes are drawn independently from a common one--body mass spec...

Planck-scale black hole remnants inside neutron stars

We examine a Planck-scale regular black-hole remnant in neutron-star matter using a T-duality-inspired effective geometry and explicitly separate geometrical results from assumptions about absorption and emission. Within the static family, the surface-gravity temperature grows as $(M-M_{\rm ext})^{1/2}$ after a small m...