Lijing Shao, Kavli Institute for Astronomy and Astrophysics at Peking University, China — June 23, 2025

In the so-called bumblebee gravity, a class of vector-tensor theories with non-minimal coupling between the vector and the metric, we find the complete set of spherical black hole solutions. These solutions reveal interesting properties, and are put to test with planetary perihelion advances and black hole images. The vector charge to mass ratio is found to be moderately small with current measurements. In the near future, with extreme-mass-ratio inspirals in the milli-hertz gravitational-wave band and timing pulsars around Sgr A* with large radio telescopes, the study of bumblebee black holes is to be improved significantly.