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2017

Gravitational Wave Signatures of Highly Compact Boson Star Binaries

Palenzuela, Carlos, Pani, Paolo, Bezares, Miguel et al.

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Solitonic boson stars are stable objects made of a complex scalar field with a compactness that can reach values comparable to that of neutron stars.

A recent study of the collision of identical boson stars produced only non-rotating boson stars or black holes, suggesting that rotating boson stars may not form from binary mergers.
Here we extend this study to include an analysis of the gravitational waves radiated during the coalescence of such a binary, which is crucial to distinguish these events from other binaries with LIGO and Virgo observations.
Our studies reveal that the remnant's gravitational wave signature is mainly governed by its fundamental frequency as it settles down to a non-rotating boson star, emitting significant gravitational radiation during this post-merger state.

Gravitational Wave Signatures of Highly Compact Boson Star Binaries · Around

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