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http://hdl.handle.net/10773/35212
Title: | Constraining spontaneous black hole scalarization in scalar-tensor-Gauss-Bonnet theories with current gravitational-wave data |
Author: | Wong, Leong Khim Herdeiro, Carlos A. R. Radu, Eugen |
Issue Date: | 19-Apr-2022 |
Publisher: | American Physical Society |
Abstract: | We examine the constraining power of current gravitational-wave data on scalar-tensor-Gauss-Bonnet theories that allow for the spontaneous scalarization of black holes. In the fiducial model that we consider, a slowly rotating black hole must scalarize if its size is comparable to the new length scale $\lambda$ that the theory introduces, although rapidly rotating black holes of any mass are effectively indistinguishable from their counterparts in general relativity. With this in mind, we use the gravitational-wave event GW190814$\,\unicode{x2014}\,$whose primary black hole has a spin that is bounded to be small, and whose signal shows no evidence of a scalarized primary$\,\unicode{x2014}\,$to rule out a narrow region of the parameter space. In particular, we find that values of ${\lambda \in [56, 96]~M_\odot}$ are strongly disfavored with a Bayes factor of $0.1$ or less. We also include a second event, GW151226, in our analysis to illustrate what information can be extracted when the spins of both components are poorly measured. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/35212 |
DOI: | 10.1103/PhysRevD.106.024008 |
ISSN: | 1550-7998 |
Appears in Collections: | CIDMA - Artigos GGDG - Artigos |
Files in This Item:
File | Description | Size | Format | |
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PRD106(2022)4008.pdf | 580.64 kB | Adobe PDF |
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