Shadows and rings of the Kehagias-Sfetsos black hole surrounded by thin disk accretion

Article Physics, Particles & Fields

Bumblebee gravity with a Kerr-Sen like solution and its Shadow

Sohan Kumar Jha et al.

Summary: The study explores Lorentz violation in the bumblebee gravity model and its effects on shadow features and radiation emission rate in rotating black hole spacetime.

EUROPEAN PHYSICAL JOURNAL C (2021)

Add to Collection

Article Astronomy & Astrophysics

Shadow, deflection angle and quasinormal modes of Born-Infeld charged black holes

Khadije Jafarzade et al.

Summary: This paper investigates black holes in the consistent Aoki-Gorji-Mukohyama theory of 4D EGB gravity with Born-Infeld nonlinear electrodynamics. It examines optical features such as shadow radius, energy emission rate, and deflection angle, showing that variations in theory parameters have specific effects on optical features of the black hole solution, and this model can be tested through astrophysical observations.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2021)

Add to Collection

Article Astronomy & Astrophysics

Double shadows of reflection-asymmetric wormholes supported by positive energy thin-shells

Merce Guerrero et al.

Summary: This study examines reflection-asymmetric thin-shell wormholes within Palatini f(R) gravity and establishes conditions for stable wormholes supported by positive-energy matter sources. It also identifies parameter subsets for positioning the shell radius above the event horizon but below the photon sphere. Additionally, it demonstrates the phenomenon of two photon spheres allowing observers to see double shadows due to the effective potential on each side of the wormhole.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2021)

Add to Collection

Article Physics, Multidisciplinary

Testing the nature of Gauss-Bonnet gravity by four-dimensional rotating black hole shadow

Shao-Wen Wei et al.

Summary: The recent discovery of a novel four-dimensional static and spherically symmetric Gauss-Bonnet black hole provides a promising opportunity to test Gauss-Bonnet gravity through astronomical observations. This study investigates the shadows cast by nonrotating and rotating Gauss-Bonnet black holes, finding that the metric parameter alpha affects the shadow's size and shape, with negative values being preferred. The comparison with the Kerr black hole shows that the shadow is more distorted for positive alpha and less distorted for negative alpha.

EUROPEAN PHYSICAL JOURNAL PLUS (2021)

Add to Collection

Article Astronomy & Astrophysics

Observational signature and additional photon rings of an asymmetric thin-shell wormhole

Jun Peng et al.

Summary: The study presents a distinct shadow mechanism from the asymmetric thin-shell wormhole and investigates the appearance of an accretion disk around it. The analysis reveals additional photon rings and a potential lensing band between highly demagnified photon rings, providing an observational signature to distinguish asymmetric thin-shell wormholes from black holes.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Light ring and the appearance of matter accreted by black holes

Vitor Cardoso et al.

Summary: The study finds that as bright spots are accreted by black holes, the emitted radiation decreases exponentially as the object approaches the event horizon, and exhibits a blueshift at late times. These universal properties serve as clear signatures of the existence of light rings in spacetime, and are not particularly sensitive to details near the horizon.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Can different black holes cast the same shadow?

Haroldo C. D. Lima Junior et al.

Summary: This paper investigates the possibility of two different black holes projecting exactly the same shadow, presenting the necessary and sufficient conditions for a static black hole to have the same shadow as Schwarzschild. It categorizes shadow-degenerate geometries into two classes and provides examples in both static and axi-symmetric cases. The examples demonstrate that nonisometric black hole spacetimes can cast the same shadow, although the lensing is generally different.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Shadows and negative precession in non-Kerr spacetime

Parth Bambhaniya et al.

Summary: The shadow is not only a property of black holes, but can also be cast by naked singularities. Novel features of the shadow of naked singularities differentiate them from black holes observationally. Negative precession of bound timelike orbits and the simultaneous presence of shadow in deformed Kerr naked singularity spacetime may indicate the presence of a deformed Kerr naked singularity.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Relating black hole shadow to quasinormal modes for rotating black holes

Huan Yang

Summary: In this work, we investigate the connection between critical curves (shadows) and quasinormal mode frequencies of Kerr black holes, showing that the shadow seen by a distant observer can be mapped to a family of quasinormal modes. The possibility of testing this relation using spaceborne gravitational wave detectors and the next-generation Event Horizon Telescope is discussed.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Shadow cast by a rotating black hole with anisotropic matter

Bum-Hoon Lee et al.

Summary: This study investigates the shadow cast induced by a rotating black hole with anisotropic matter, deriving a Killing tensor representing the hidden symmetry and analyzing the complete integrability of geodesic motion. The study also examines the effect of the anisotropic matter on shadow observables and concludes that it impacts one side of the black hole being brighter.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

QED effect on a black hole shadow

Zezhou Hu et al.

Summary: In this study, the shadows of static black holes with magnetic monopoles and neutral black holes in magnetic fields were investigated using numerical backward ray-tracing method. The relation between shadow radius and coupling constant for black holes with magnetic monopoles, and the linear relation between eccentricity and coupling constant for neutral black holes in uniform magnetic fields were obtained. It was found that shadow curves can be well approximated by ellipses in most cases, except under certain conditions of strong magnetic fields and observer positions. The study was extended to include a neutral static black hole surrounded by a current loop.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Shadow of nulllike and timelike naked singularities without photon spheres

Dipanjan Dey et al.

Summary: This paper explores the general conditions for shadows to occur without a photon sphere in a spacetime caused by central naked singularities, and introduces classes of spacetimes with such properties. It shows that timelike naked singularities can have shadows of varying sizes compared to a black hole, while nulllike naked singularities always have shadows smaller than a black hole. These novel features could potentially help in distinguishing between black holes and naked singularities observationally.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Shadows of accelerating black holes

Ming Zhang et al.

Summary: The acceleration of a black hole causes circular orbits for photons with fixed radial and latitude coordinates to deviate from the equatorial plane, altering the properties of the black hole shadow. As the acceleration increases, the latitude of the circular orbit also increases, leading to an increase in the observer's inclination angles, resulting in maximum shadow radius and distortion for an accelerating Kerr black hole.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Quasinormal modes, quasiperiodic oscillations, and the shadow of rotating regular black holes in nonminimally coupled Einstein-Yang-Mills theory

Kimet Jusufi et al.

Summary: This paper obtains an effective metric describing a regular and rotating magnetic black hole solution and studies various properties including BH shadow, QNMs, QPOs, and observational constraints on the EYM parameter. The study shows interesting correlations between the magnetic charge, shadow radius, and QNMs of scalar and electromagnetic fields, also distinguishing the rotating EYM black hole from the Kerr-Newman black hole.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Physics, Particles & Fields

Shadow of a Schwarzschild black hole surrounded by a Bach-Weyl ring

Mingzhi Wang et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Add to Collection

Article Astronomy & Astrophysics

Deflection angle and shadow behaviors of quintessential black holes in arbitrary dimensions

A. Belhaj et al.

CLASSICAL AND QUANTUM GRAVITY (2020)

Add to Collection

Article Physics, Particles & Fields

Shadows and photon spheres with spherical accretions in the four-dimensional Gauss-Bonnet black hole

Xiao-Xiong Zeng et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Add to Collection

Article Physics, Particles & Fields

Shadow of a disformal Kerr black hole in quadratic degenerate higher-order scalar-tensor theories

Fen Long et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Add to Collection

Article Astronomy & Astrophysics

Acoustic black hole in Schwarzschild spacetime: Quasinormal modes, analogous Hawking radiation, and shadows

Hong Guo et al.

PHYSICAL REVIEW D (2020)

Add to Collection

Article Physics, Particles & Fields

Influence of quintessence dark energy on the shadow of black hole

Xiao-Xiong Zeng et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Add to Collection

Article Astronomy & Astrophysics

Shadow, quasinormal modes, and quasiperiodic oscillations of rotating Kaluza-Klein black holes

M. Ghasemi-Nodehi et al.

PHYSICAL REVIEW D (2020)

Add to Collection

Article Astronomy & Astrophysics

Null geodesics, quasinormal modes, and the correspondence with shadows in high-dimensional Einstein-Yang-Mills spacetimes

Yang Guo et al.

PHYSICAL REVIEW D (2020)

Add to Collection

Article Astronomy & Astrophysics

Quasinormal modes, shadow, and greybody factors of 5D electrically charged Bardeen black holes

Kimet Jusufi et al.

PHYSICAL REVIEW D (2020)

Add to Collection

Article Astronomy & Astrophysics

Does the shape of the shadow of a black hole depend on motional status of an observer?

Zhe Chang et al.

PHYSICAL REVIEW D (2020)

Add to Collection

Article Astronomy & Astrophysics

Influence of an anisotropic matter field on the shadow of a rotating black hole

Javier Badia et al.

PHYSICAL REVIEW D (2020)

Add to Collection

Article Astronomy & Astrophysics

Shadows of Kerr-like black holes in a modified gravity theory

Hui-Min Wang et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2019)

Add to Collection

Article Physics, Particles & Fields

Shadow of a rotating squashed Kaluza-Klein black hole

Fen Long et al.

JOURNAL OF HIGH ENERGY PHYSICS (2019)

Add to Collection

Article Astronomy & Astrophysics

Geodesics and periodic orbits in Kehagias-Sfetsos black holes in deformed Horava-Lifshitz gravity

Shao-Wen Wei et al.

PHYSICAL REVIEW D (2019)

Add to Collection

Article Astronomy & Astrophysics

First M87 Event Horizon Telescope Results. III. Data Processing and Calibration

Kazunori Akiyama et al.

ASTROPHYSICAL JOURNAL LETTERS (2019)

Add to Collection

Article Astronomy & Astrophysics

First M87 Event Horizon Telescope Results. II. Array and Instrumentation

Kazunori Akiyama et al.

ASTROPHYSICAL JOURNAL LETTERS (2019)

Add to Collection

Article Astronomy & Astrophysics

First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole

Kazunori Akiyama et al.

ASTROPHYSICAL JOURNAL LETTERS (2019)

Add to Collection

Article Astronomy & Astrophysics

First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring

Kazunori Akiyama et al.

ASTROPHYSICAL JOURNAL LETTERS (2019)

Add to Collection

Article Astronomy & Astrophysics

First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole

Kazunori Akiyama et al.

ASTROPHYSICAL JOURNAL LETTERS (2019)

Add to Collection

Article Astronomy & Astrophysics

First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

Kazunori Akiyama et al.

ASTROPHYSICAL JOURNAL LETTERS (2019)

Add to Collection

Article Astronomy & Astrophysics

The Shadow of a Spherically Accreting Black Hole

Ramesh Narayan et al.

ASTROPHYSICAL JOURNAL LETTERS (2019)

Add to Collection

Article Astronomy & Astrophysics

Black hole shadows, photon rings, and lensing rings

Samuel E. Gralla et al.

PHYSICAL REVIEW D (2019)

Add to Collection

Article Astronomy & Astrophysics

Shadows of Bonnor black dihole by chaotic lensing

Mingzhi Wang et al.

PHYSICAL REVIEW D (2018)

Add to Collection

Article Astronomy & Astrophysics

Chaotic shadow of a non-Kerr rotating compact object with quadrupole mass moment

Mingzhi Wang et al.

PHYSICAL REVIEW D (2018)

Add to Collection

Article Astronomy & Astrophysics

Shadow casted by a Konoplya-Zhidenko rotating non-Kerr black hole

Mingzhi Wang et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2017)

Add to Collection

Article Physics, Particles & Fields

Double shadow of a regular phantom black hole as photons couple to the Weyl tensor

Yang Huang et al.

EUROPEAN PHYSICAL JOURNAL C (2016)

Add to Collection

Article Physics, Multidisciplinary

Observation of Gravitational Waves from a Binary Black Hole Merger

B. P. Abbott et al.

PHYSICAL REVIEW LETTERS (2016)

Add to Collection

Article Astronomy & Astrophysics

Shadow of five-dimensional rotating Myers-Perry black hole

Uma Papnoi et al.

PHYSICAL REVIEW D (2014)

Add to Collection

Article Astronomy & Astrophysics

Observing the shadow of Einstein-Maxwell-Dilaton-Axion black hole

Shao-Wen Wei et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2013)

Add to Collection

Article Astronomy & Astrophysics

Shadow of rotating non-Kerr black hole

Farruh Atamurotov et al.

PHYSICAL REVIEW D (2013)

Add to Collection

Article Physics, Particles & Fields

Thermodynamics of Horava-Lifshitz black holes

Yun Soo Myung et al.

EUROPEAN PHYSICAL JOURNAL C (2010)

Add to Collection

Article Astronomy & Astrophysics

Quasinormal modes of a black hole in the deformed Horava-Lifshitz gravity

Songbai Chen et al.

PHYSICS LETTERS B (2010)

Add to Collection

Article Astronomy & Astrophysics

Strong field gravitational lensing in the deformed Horcava-Lifshitz black hole

Songbai Chen et al.

PHYSICAL REVIEW D (2009)

Add to Collection

Article Astronomy & Astrophysics

Topological black holes in Horcava-Lifshitz gravity

Rong-Gen Cai et al.

PHYSICAL REVIEW D (2009)

Add to Collection

Article Physics, Multidisciplinary

Spectral Dimension of the Universe in Quantum Gravity at a Lifshitz Point

Petr Horava

PHYSICAL REVIEW LETTERS (2009)

Add to Collection

Article Astronomy & Astrophysics

Towards constraining of the Horava-Lifshitz gravities

R. A. Konoplya

PHYSICS LETTERS B (2009)

Add to Collection

Article Astronomy & Astrophysics

The black hole and FRW geometries of non-relativistic gravity

Alex Kehagias et al.

PHYSICS LETTERS B (2009)

Add to Collection

Article Astronomy & Astrophysics

Thermodynamics of black holes in the deformed Horava-Lifshitz gravity

Yun Soo Myung

PHYSICS LETTERS B (2009)

Add to Collection

Article Astronomy & Astrophysics

Thermodynamics of black holes in Horava-Lifshitz gravity

Rong-Gen Cai et al.

PHYSICS LETTERS B (2009)

Add to Collection

Article Physics, Particles & Fields

On the z=4 Horava-Lifshitz Gravity

Rong-Gen Cai et al.

JOURNAL OF HIGH ENERGY PHYSICS (2009)

Add to Collection

Shadows and rings of the Kehagias-Sfetsos black hole surrounded by thin disk accretion

Related references

Export Citation

Share Paper