ECO-spotting: looking for extremely compact objects with bosonic fields

Understand

Black holes are thought to describe the geometry of massive, dark compact objects in the universe.

• To further support and quantify this long-held belief requires knowledge of possible, if exotic alternatives.
• Here, we wish to understand how compact can self-gravitating solutions be.
• We discuss theories with a well-posed initial value problem, consisting in either a single self-interacting scalar, vector or both.