Shadows and properties of spin-induced scalarized black holes with and without a Ricci coupling

Fernandes, Pedro G. S.; Burrage, Clare; Eichhorn, Astrid; Sotiriou, Thomas P.

Abstract

In this work, we explore the properties and shadows of spin-induced scalarized black holes, as well as investigate how a Ricci coupling influences them. Our findings reveal significant deviations from the Kerr metric in terms of the location and geodesic frequencies of the innermost stable circular orbit and light ring, with the former exhibiting more pronounced disparities. The shadows of scalarized black holes exhibit relatively minor deviations when compared to those of Kerr black holes with the same mass and spin. Overall, the presence of a Ricci coupling is observed to mitigate deviations from the Kerr metric.

• Journal Article Type: Article
• Acceptance Date: Apr 15, 2024
• Online Publication Date: May 10, 2024
• Publication Date: May 10, 2024
• Deposit Date: May 20, 2024
• Publicly Available Date: May 21, 2024
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 109
• Issue: 10
• Article Number: 104033
• DOI: https://doi.org/10.1103/physrevd.109.104033
• Public URL: https://nottingham-repository.worktribe.com/output/34875143
• Publisher URL: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.104033