Bondi-Sachs metrics and Photon Rockets

Bondi-type systems near space-like and null infinity

Bondi-type systems near space-like infinity and the calculation of the NP-constants

Bondian frames to couple matter with radiation

Bonnor stars in d spacetime dimensions

Bonnor-type Black Dihole Solution in Brans-Dicke-Maxwell Theory

Boost invariance of the gravitational field dynamics: quantization without time gauge

Boost invariant marginally trapped surfaces in Minkowski 4-space

Boost symmetry in the Quantum Gravity sector

Boost-rotation symmetric spacetimes - review

Boost-rotation symmetric type D radiative metrics in Bondi coordinates

Boost-rotation symmetric vacuum spacetimes with spinning sources

Boosted Kerr black hole

Boosted three-dimensional black-hole evolutions with singularity excision

Boosting the Kerr-geometry into an arbitrary direction

Bootstrap Universe from Self-Referential Noise

Bootstrapping gravity: a consistent approach to energy-momentum self-coupling

Border of Spacetime

Born's group and Generalized isometries

Born--Oppenheimer decomposition for quantum fields on quantum spacetimes