Profiles of emission lines generated by rings orbiting braneworld Kerr black holes

Abstract

In the framework of the braneworld models, rotating black holes can be described by the Kerr metric with a tidal charge representing the influence of the non-local gravitational (tidal) effects of the bulk space Weyl tensor onto the black hole spacetime. We study the influence of the tidal charge onto profiled spectral lines generated by radiating tori orbiting in vicinity of a rotating black hole. We show that with lowering the negative tidal charge of the black hole, the profiled line becomes to be flatter and wider keeping their standard character with flux stronger at the blue edge of the profiled line. The extension of the line grows with radius falling and inclination angle growing. With growing inclination angle a small hump appears in the profiled lines due to the strong lensing effect of photons coming from regions behind the black hole. For positive tidal charge ($b>0$) and high inclination angles two small humps appear in the profiled lines close to the red and blue edge of the lines due to the strong lensing effect. We can conclude that for all values of $b$, the strongest effect on the profiled lines shape (extension) is caused by the changes of the inclination angle.

Accepted by General Relativity and Gravitation

References in corpus (2)

• X-ray Properties of Black-Hole Binaries
• Displacement of the Sun from the Galactic Plane

Cited by in corpus (18)

• Black hole mimicker hiding in the shadow: Optical properties of the $\gamma$-metric
• Circular geodesics of Bardeen and Ayon-Beato-Garcia regular black-hole and no-horizon spacetimes
• Constraints on the spacetime metric around seven "bare" AGNs using X-ray reflection spectroscopy
• Efficiency of the Keplerian accretion in the Braneworld Kerr--Newman Spacetimes and mining instability of some naked singularity spacetimes
• Testing the Kerr metric with the iron line and the KRZ parametrization
• Particle collisions and optical effects in the mining Kerr--Newman spacetimes
• Testing Einstein-dilaton-Gauss-Bonnet gravity from the reflection spectrum of accreting black holes
• Iron K$\alpha$ line of boson stars
• Excavating black hole continuum spectrum: Possible signatures of scalar hairs and of higher dimensions
• XSPEC model for testing the Kerr black hole hypothesis using the continuum-fitting method
• About the Kerr nature of the stellar-mass black hole in GRS 1915+105
• RADs energetics and constraints on emerging tori collisions around super-massive Kerr Black Holes
• Constraining the Johannsen deformation parameter ${\epsilon }_3$ with black hole X-ray data
• Plasma Magnetosphere of Rotating Magnetized Neutron Star in the Braneworld
• Silhouette and spectral line profiles in the special modification of the Kerr black hole geometry generated by quintessential fields
• Constraining the Kerr parameters via X-ray reflection spectroscopy
• Test of the string loop oscillation model using kHz quasiperiodic oscillations in a neutron star binary
• Testing the Kerr black hole hypothesis with RELXILL_NK