Topological constraints on general relativistic galaxies: Exploring novel conical singularity networks

Understand

The van Stockum-Bonner class of spacetimes can be interpreted as fully general relativistic models for rigidly rotating disc galaxies.

• Frame-dragging effects in these geometries demand a recalibration of the dark matter content relative to models based on Newtonian gravity.
• We investigate the previously overlooked topological structure of these spacetimes, in relation to the viability of fully general relativistic galaxy toy models.
• We discuss the appropriate boundary conditions for these solutions to model disc galaxies.