Applications of Boson Stars in Numerical Relativity

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• Gareth Marks (DAMTP)
• Friday 06 March 2026, 13:00-14:00
• Potter Room / Zoom : https://cam-ac-uk.zoom.us/j/85131795570.

If you have a question about this talk, please contact Lorenzo Gavassino.

Boson stars (BSs)— self-gravitating configurations of a complex scalar field— provide a simple, numerically tractable model for a class of exotic compact objects (ECOs). I will discuss two recent works showing how dynamical evolutions of spacetimes involving BSs can be used to address theoretical and observational challenges related to ECOs. First, I will cover how evolutions of a class of ultracompact BSs, which possess a pair of light rings, find no evidence for the efficacy of a conjectured dynamical instability affecting ultraompact objects, thus presenting the first long-term stable evolutions of black hole mimickers and raising the possibility that a population of such objects could exist in the universe. Secondly, I will discuss results from a study of black hole-boson star binary mergers, focusing on prospects for attempts to build gravitational wave template banks for astrophysical ECO searches in a model-agnostic manner. 

This talk is part of the DAMTP Friday GR Seminar series.

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