1-5 July 2019
The University of Manchester
Europe/London timezone
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On the growth of massive scalar hair around a Schwarzschild black hole

Presented by Dr. Katy CLOUGH on 1 Jul 2019 from 18:00 to 18:20
Type: oral presentation
Track: Cosmological Probes


In arXiv:1904.12783, we showed through numerical simulations of a minimally coupled massive Klein-Gordon scalar field that it is possible to grow "hair" on a Schwarzschild black hole if one assumes a periodically time-varying (but spatially homogeneous) background. We saw a non-trivial profile emerge on a timescale related to the mass of the black hole, both with and without backreaction of the field on the metric. The results are particularly relevant for scalar-tensor theories of gravity and dark matter models consisting of a massive scalar, e.g. axions. Our simulations are also a first step in studying the impact of such a background on a binary merger, potentially resulting in a imprint on the gravitational wave merger signal.


Location: Schuster
Room: Annex: Bell Burnell Lecture Theatre

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