English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this paper we first investigate the equatorial circular orbit structure ofKerr black holes with scalar hair (KBHsSH) and highlight their most prominentfeatures which are quite distinct from the exterior region of ordinary baldKerr black holes, i.e. peculiarities that arise from the combined bound systemof a hole with an off-center, self-gravitating distribution of scalar matter.Some of these traits are incompatible with the thin disk approach, thus weidentify and map out various regions in the parameter space respectively. Allthe solutions for which the stable circular orbital velocity (and angularmomentum) curve is continuous are used for building thin and optically thickdisks around them, from which we extract the radiant energy fluxes,luminosities and efficiencies. We compare the results in batches with the samespin parameter $j$ but different normalized charges, and the profiles arerichly diverse. Because of the existence of a conserved scalar charge, $Q$,these solutions are non-unique in the $(M, J)$ parameter space. Furthermore,$Q$ cannot be extracted asymptotically from the metric functions. Nevertheless,by constraining the parameters through different observations, the luminosityprofile could in turn be used to constrain the Noether charge and characterizethe spacetime, should KBHsSH exist.

Circular Orbits Structure and Thin Accretion Disks around Kerr Black Holes with Scalar Hair