Probing time-dependent scalar wigs with extreme-mass-ratio inspirals
We investigate the gravitational wave emission from extreme mass ratio inspirals, key targets for the upcoming space-based detector LISA, considering the scenario where the lighter black hole in the binary is endowed by a long-lived, time-dependent scalar field configuration, known as a scalar wig. We develop a formalism to compute scalar perturbations for extreme mass ratio inspirals on circular orbits around Schwarzschild and Kerr black holes, and apply this framework to compute additional fluxes induced by the scalar wig as well as their dependence on the scalar field properties. Our computation provides strong indications that in this scenario the presence of the scalar field does not significantly affect the orbital motion and the gravitational waveform.
Authors
- Georgios Antoniou (ORCID: https://orcid.org/0000-0002-5974-320X)
- Leonardo Gualtieri (ORCID: https://orcid.org/0000-0002-1097-3266)
- Andrea Maselli (ORCID: https://orcid.org/0000-0001-8515-8525)
- Karl J. Friston
Institutions
- University of Pisa (IT)
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso (IT)
- Gran Sasso Science Institute (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Pisa (IT)
- Sapienza University of Rome (IT)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2025-05-22
- DOI
- https://doi.org/10.1103/j83z-bn8b
- Citations
- 1
- Primary Topic
- Pulsars and Gravitational Waves Research
- Type
- article
- Field-Weighted Citation Impact
- 1.15
Funders
- Ministero degli Affari Esteri e della Cooperazione Internazionale
- Ministero dell'Università e della Ricerca
- Horizon 2020 Framework Programme
- Instituto Nazionale di Fisica Nucleare
- H2020 Marie Skłodowska-Curie Actions