Skip to main content

Research Repository

Advanced Search

Extreme mass-ratio inspirals as probes of scalar fields: Eccentric equatorial orbits around Kerr black holes

Barsanti, Susanna; Franchini, Nicola; Gualtieri, Leonardo; Maselli, Andrea; Sotiriou, Thomas P.

Authors

Susanna Barsanti

Nicola Franchini

Leonardo Gualtieri

Andrea Maselli

THOMAS SOTIRIOU Thomas.Sotiriou@nottingham.ac.uk
Professor of Gravitational Physics



Abstract

We study binary systems in which a stellar mass compact object spirals into a massive black hole, known as extreme mass ratio inspirals, in scenarios with a new fundamental scalar field. Earlier work has shown that, in most interesting such scenarios and to leading order in the mass ratio, the massive black holes can be adequately approximated by the Kerr metric and the imprint of the scalar field on the waveform is fully controlled by the scalar charge of the stellar mass object. Here we use this drastic simplification in the inspiral modeling and consider eccentric equatorial orbits. We study how the scalar charge affects the orbital evolution for different eccentricities and different values of the black hole spin. We then determine how changes in the orbital evolution get imprinted on the waveform and assess LISA's capability to detect or constrain the scalar charge.

Citation

Barsanti, S., Franchini, N., Gualtieri, L., Maselli, A., & Sotiriou, T. P. (2022). Extreme mass-ratio inspirals as probes of scalar fields: Eccentric equatorial orbits around Kerr black holes. Physical Review D, 106(4), Article 044029. https://doi.org/10.1103/physrevd.106.044029

Journal Article Type Article
Acceptance Date Jul 14, 2022
Online Publication Date Aug 11, 2022
Publication Date Aug 15, 2022
Deposit Date Sep 13, 2022
Publicly Available Date Sep 13, 2022
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society (APS)
Peer Reviewed Peer Reviewed
Volume 106
Issue 4
Article Number 044029
DOI https://doi.org/10.1103/physrevd.106.044029
Public URL https://nottingham-repository.worktribe.com/output/10357780
Publisher URL https://journals.aps.org/prd/abstract/10.1103/PhysRevD.106.044029

Files




You might also like



Downloadable Citations