Response of ultralight dark matter to supermassive black holes and binaries

  title={Response of ultralight dark matter to supermassive black holes and binaries},
  author={Lorenzo Annulli and Vitor Cardoso and Rodrigo Vicente},
  journal={Physical Review D},
Scalar fields can give rise to confined structures, such as boson stars or $Q$-balls. These objects are interesting hypothetical new ``dark matter stars,'' but also good descriptions of dark matter haloes when the fields are ultralight. Here, we study the dynamical response of such confined bosonic structures when excited by external matter (stars, planets or black holes) in their vicinities. Such perturbers can either be plunging through the bosonic configuration or undergoing periodic motion… 
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