REVIEW 7 cited by
Shadows and photon spheres with spherical accretions in the four-dimensional Gauss-Bonnet black hole
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
We investigate the shadows and photon spheres of the four-dimensional Gauss-Bonnet black hole with the static and infalling spherical accretions. We show that for both cases, the shadow and photon sphere are always present. The radii of the shadow and photon sphere are independent of the profiles of accretion for a fixed Gauss-Bonnet constant, implying that the shadow is a signature of the spacetime geometry and it is hardly influenced by accretion in this case. Because of the Doppler effect, the shadow of the infalling accretion is found to be darker than that of the static one. We also investigate the effect of the Gauss-Bonnet constant on the shadow and photon sphere, and find that the larger the Gauss-Bonnet constant is, the smaller the radii of the shadow and photon sphere will be. In particular, the observed specific intensity increases with the increasing of the Gauss-Bonnet constant.
Forward citations
Cited by 7 Pith papers
-
Construction of an analytic multi-component accretion environment and its application to Kerr black hole imaging
A fully analytic accretion model combining a thick disk, Gaussian ring bumps, and localized Gaussian spots is applied to Kerr ray tracing, generating images with multiple bright spots and arcs.
-
Schwarzschild Black Holes Immersed in Born-Infeld Magnetic Fields and Their Observational Signatures
Numerically solving full Born-Infeld magnetic fields around a Schwarzschild black hole makes meridional photon orbits prolate and elongates the black hole shadow along the polar axis at high inclination.
-
Observational Signatures of Janis-Newman-Winicour Strongly Naked Singularity
Light rays that turn around near a JNW strongly naked singularity produce paired lensed images and characteristic brightness curves that differ from black hole images.
-
Observing the eye of the storm I: testing regular black holes with LVK and EHT observations
EHT shadow sizes and LIGO/Virgo/KAGRA inspiral waveforms allow only small values of the dimensionless regularity parameter ℓ in the Ghosh-Simpson-Visser regular black hole.
-
Gravitational Lensing by Black Holes in Einstein-nonlinear Electrodynamic Theories with Multiple Photon Spheres
In Einstein-nonlinear electrodynamic black holes, each effective potential peak that is taller than all peaks outside it yields a separate photon ring cluster in the lensed image, and triple-peak cases show three nest...
-
Probing Weak-Force Corrections to Black Hole Geometry via Long Range Potentials: Feinberg-Sucher and Ferrer-Nowakowski Potentials
A heuristic model claims neutrino- and boson-mediated forces would shift black hole photon spheres and shadows, with attractive forces enlarging and repulsive forces shrinking them.
-
The Image of Scalar Hairy Black Holes with Asymmetric Potential
The optical appearance of a scalar hairy black hole with asymmetric potential is computed, and its shadow size is used to constrain the potential parameters with EHT observations.
Discussion (0). Continue with ORCID to comment.