4.5 Article

Testing dynamical torsion effects on the charged black hole's shadow, deflection angle and greybody with M87*and Sgr. A* from EHT

Related references

Note: Only part of the references are listed.
Article Physics, Multidisciplinary

Shadow and weak deflection angle of extended uncertainty principle black hole surrounded with dark matter

Reggie C. Pantig et al.

Summary: This paper discusses the possible effects of dark matter on a Schwarzschild black hole with the correction of extended uncertainty principle (EUP), finding that the black hole temperature is independent of any dark matter concentration and a greater dark matter density is needed to have remarkable effects on null orbits.

ANNALS OF PHYSICS (2022)

Article Physics, Particles & Fields

Influence of torsion charge on shadow and observation signature of black hole surrounded by various profiles of accretions

Ke-Jian He et al.

Summary: In this paper, the authors study the shadow and observational signature of a black hole with torsion charge and compare the results with those obtained in Schwarzschild spacetime. The study shows that for thin disk accretion cases, the observed image of the black hole exhibits dark areas, photon rings, and lensing rings, which are closely related to the torsion charge. The change of torsion charge affects the range of photon and lens rings as well as their contribution to the observed intensity. Additionally, the observed intensity is mainly provided by direct emission, while the lensing and photon rings contribute only a small part. The authors also find that the observed image is darker for falling accretion matters, but the shadow radius remains unchanged. However, both the observed intensity and shadow size significantly differ when the torsion charge changes. Based on the shadow of M87, the authors also constrain the torsion charge of the black hole. Comparing the results with those in Schwarzschild spacetime, it is evident that the black hole shadow can serve as a feasible method for distinguishing different spacetimes.

EUROPEAN PHYSICAL JOURNAL C (2022)

Article Astronomy & Astrophysics

Nonlinear electrodynamics effects on the black hole shadow, deflection angle, quasinormal modes and greybody factors

M. Okyay et al.

Summary: In this paper, the effects of nonlinear electrodynamics (NED) on non-rotating black holes are discussed, including various observable and physical properties. It is found that the NED black hole is always surrounded by an event horizon and any magnetic charge is permissible. The black hole gets colder with increasing charge, and the observed shadow radius is strongly affected by the magnetic charge parameter P. The introduction of charge steepens the greybody factor of the black hole.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2022)

Article Astronomy & Astrophysics

Entropy of Reissner-Nordstrom-like black holes

M. Blagojevic et al.

Summary: In Poincare gauge theory, black hole entropy is canonically defined by the variation of a boundary term Gamma(H) located at the horizon. For a new member of the same class, the Reissner-Nordstrom-like black hole with torsion, the variation of Gamma(H) is affected by a gravitational parameter induced by the existence of torsion, ensuring the validity of the first law.

PHYSICS LETTERS B (2022)

Review Physics, Multidisciplinary

Calculating black hole shadows: Review of analytical studies

Volker Perlick et al.

Summary: This article provides a review of current research on black hole shadows, with a focus on analytical studies. It discusses the definition of the shadow, derivation of angular size, and calculation methods under various conditions. Special attention is given to non-asymptotically flat spacetimes and the influence of plasma on black hole shadows.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2022)

Article Astronomy & Astrophysics

First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

Kazunori Akiyama et al.

Summary: This study presents the first observations of Sagittarius A* using the Event Horizon Telescope. The data supports the presence of a supermassive black hole at the center of the Milky Way, with an image that is consistent with the expected appearance of a Kerr black hole. The results also connect dynamical measurements of stellar orbits to event-horizon-scale images.

ASTROPHYSICAL JOURNAL LETTERS (2022)

Article Astronomy & Astrophysics

Dehnen halo effect on a black hole in an ultra-faint dwarf galaxy

Reggie C. Pantig et al.

Summary: This study investigates the relationship between black holes and dark matter profiles in dwarf galaxies, finding that using the weak deflection angle can be far more effective in distinguishing between different profiles.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2022)

Article Physics, Multidisciplinary

Strong gravitational lensing and shadow constraint from M87*of slowly rotating Kerr-like black hole

Xiao-Mei Kuang et al.

Summary: Motivated by the recent EHT observations and the possibility of Lorentz symmetry being broken in gravity, this study applies the Einstein bumblebee gravity with Lorentz violation to investigate the strong gravitational lensing effect and black hole shadow. The results show significant effects of the Lorentz violation parameter on lensing observables and the luminosity of the black hole shadow.

ANNALS OF PHYSICS (2022)

Article Astronomy & Astrophysics

Superradiance evolution of black hole shadows revisited

Rittick Roy et al.

Summary: This study reconsiders the evolution of black hole shadows induced by superradiance and investigates the case of two ultralight bosons. The study finds that gas accretion and gravitational wave radiation have a negligible effect on the results, and the inclusion of an additional ultralight boson does not shorten the shadow evolution time scale.

PHYSICAL REVIEW D (2022)

Article Physics, Particles & Fields

Dark matter effect on the weak deflection angle by black holes at the center of Milky Way and M87 galaxies

Reggie C. Pantig et al.

Summary: In this paper, the effect of dark matter on the weak deflection angle by black holes at the galactic center is investigated. Three known dark matter density profiles are considered and the positional angles are measured using the Ishihara et al. method. The emergence of apparent divergent terms on the dark matter profiles is found, but they vanish when the distance from the black hole is large. The weak deflection angle varies interestingly with the impact parameter, providing insights into the interaction between dark matter and null particles.

EUROPEAN PHYSICAL JOURNAL C (2022)

Article Astronomy & Astrophysics

Shadows and optical appearance of a power-Yang-Mills black hole surrounded by different accretion disk profiles

L. Chakhchi et al.

Summary: This study investigates the image and luminosity of a power-Yang-Mills black hole under different accretion models. The research reveals that the variation of physical quantities of the black hole affects the image characteristics observed by a distant observer, and the accretion model and power parameter gamma also impact the image formation.

PHYSICAL REVIEW D (2022)

Article Astronomy & Astrophysics

The Nature of Black Hole Shadows

Thomas Bronzwaer et al.

Summary: Distinct visual signature occurs in black holes surrounded by optically thin and geometrically thick emission regions, resulting in a sharp-edged dip in brightness coincident with the black hole's shadow. This signature is due to the reduction of intensity observed in rays that intersect the unstable-photon region and the increase of intensity in rays that travel along extended paths near the boundary of the unstable-photon region. The black hole shadow is distinct from the photon ring and is a robust and fairly model-independent observable for accreting black holes in the deep sub-Eddington regime.

ASTROPHYSICAL JOURNAL (2021)

Article Physics, Particles & Fields

Absorption by stringy black holes

Sergio V. M. C. B. Xavier et al.

Summary: This study compares the absorption of planar scalar waves by Kerr-Sen and Kerr-Newman black holes, finding that they have similar absorption cross sections but with increasing differences for higher values of the charge ratio Q.

EUROPEAN PHYSICAL JOURNAL C (2021)

Article Astronomy & Astrophysics

Shadows of 5D black holes from string theory

A. Belhaj et al.

Summary: This study investigates the shadow behaviors of five dimensional black holes embedded in type IIB superstring/supergravity inspired spacetimes, analyzing geometrical properties such as shapes and sizes. It is found that physical parameters significantly distort the shapes and decrease the size of the shadows. The research also delves into geometrical observables and energy emission rate aspects.

PHYSICS LETTERS B (2021)

Article Astronomy & Astrophysics

Superentropic AdS black hole shadows

A. Belhaj et al.

Summary: This study focuses on the shadow aspects of superentropic black holes in four dimensions using the Hamilton-Jacobi formalism. By analyzing the shadow behaviors in celestial coordinates with fixed observer positions, ellipse shaped geometries contrary to usual black hole solutions are observed. The modifications made to the ordinary relations describing geometrical observables lead to discussions on size and shape deformation parameters of these non-trivial geometric forms, as well as exploring the shadow of naked singularities associated with certain mass values.

PHYSICS LETTERS B (2021)

Article Astronomy & Astrophysics

Black hole shadow in symmergent gravity

Irfan Cimdiker et al.

Summary: Symmergent gravity is an emerging R+R-2 gravity theory that restores gauge symmetries broken explicitly by ultraviolet cutoff in effective field theories. Novel black hole solutions have been constructed to test symmergent gravity, and the results show that various indicators are sensitive probes of it and the particle spectrum of the underlying quantum field theory.

PHYSICS OF THE DARK UNIVERSE (2021)

Article Astronomy & Astrophysics

The imitation game: Proca stars that can mimic the Schwarzschild shadow

Carlos A. R. Herdeiro et al.

Summary: The study finds that dynamically robust spherical Proca stars can successfully mimic the shadow of a (near-)equilibrium Schwarzschild BH in an astrophysical environment, despite the absence of light rings, under certain observation conditions. Different types of bosonic stars exhibit different behaviors in terms of stability and the ability to imitate black hole characteristics, with some solutions showing potential to reproduce the ISCO of a Schwarzschild BH.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2021)

Article Astronomy & Astrophysics

Parameter estimation of hairy Kerr black holes from its shadow and constraints from M87

Misba Afrin et al.

Summary: The study reveals that the size and shape of hairy Kerr black holes are influenced by the parameter l(0), resulting in more distorted shadows compared to Kerr black holes. Estimating the parameters associated with hairy Kerr black holes through the investigation of ergosphere and shadows provides insights into the differences between these black holes.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

Shadows of Lorentzian traversable wormholes

Farook Rahaman et al.

Summary: Studying the shadows of wormholes provides valuable insights into the evolution of compact objects and is a crucial issue in contemporary astrophysics. The nature of the wormholes greatly influences the shadow effect, which varies based on different parameters in the wormhole spacetime. The average diameter of the wormhole shadow and its deviation from circularity can help constrain the size and spin of the wormhole.

CLASSICAL AND QUANTUM GRAVITY (2021)

Article Astronomy & Astrophysics

No-hair theorem in the wake of Event Horizon Telescope

Mohsen Khodadi et al.

Summary: The EHT image of the M87* supermassive black hole allows for a test of the no-hair theorem by introducing a hair parameter ε into the Kerr spacetime metric. The analysis shows that the ε parameter affects the geometry of the standard shadow, leading to different shapes depending on its positive or negative value. Numerical analysis within a specific range of rotation parameter provides constraints on the hair parameter in both possible solutions.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2021)

Article Astronomy & Astrophysics

Black hole with confining electric potential in scalar-tensor description of regularized 4-dimensional Einstein-Gauss-Bonnet gravity

A. Ovgun

Summary: This paper presents an exact confining charged black hole solution in the scalar-tensor description of regularized 4-dimensional Einstein-Gauss-Bonnet gravity coupled to non-linear gauge theory. The importance of using a non-trivial 4D theory of Gauss-Bonnet gravity is emphasized, and the study of its properties such as temperature, specific heat, shadow, and quasinormal modes is conducted. The results show the significant contribution of a confining charge to the shadow and quasinormal modes frequencies of the black hole.

PHYSICS LETTERS B (2021)

Article Astronomy & Astrophysics

Constraints on black-hole charges with the 2017 EHT observations of M87*

Prashant Kocherlakota et al.

Summary: Recent measurements by the Event Horizon Telescope have improved our understanding of strong gravity near supermassive compact objects. By using the shadow size of M87*, constraints on the physical charges of various types of nonrotating or rotating black holes can be inferred, helping rule out certain types of highly charged black holes. Additionally, considering black holes with two physical and independent charges allows for the exclusion of significant regions in the parameter space for specific types of black holes.

PHYSICAL REVIEW D (2021)

Article Astronomy & Astrophysics

Black holes with a cosmological constant in bumblebee gravity

R. Maluf et al.

Summary: This work introduces black hole solutions with a cosmological constant in bumblebee gravity, where the nonzero vacuum expectation value of the bumblebee field leads to Lorentz symmetry violation. These solutions are spherically symmetric black holes with an effective cosmological constant, supported by an anisotropic energy-momentum tensor. The study calculates the shadow angular radius for the proposed black hole solution, establishing a relationship between the bumblebee field and the shadow angular size for the first time.

PHYSICAL REVIEW D (2021)

Article Astronomy & Astrophysics

Magnetically charged black holes from non-linear electrodynamics and the Event Horizon Telescope

Alireza Allahyari et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

Article Physics, Multidisciplinary

Effect of the quintessential dark energy on weak deflection angle by Kerr-Newmann Black hole

W. Javed et al.

ANNALS OF PHYSICS (2020)

Article Physics, Particles & Fields

Schwarzschild-like black holes: Light-like trajectories and massless scalar absorption

Renan B. Magalhaes et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Article Astronomy & Astrophysics

First analytical calculation of black hole shadow in McVittie metric

Oleg Yu Tsupko et al.

INTERNATIONAL JOURNAL OF MODERN PHYSICS D (2020)

Article Astronomy & Astrophysics

Lensing and shadow of a black hole surrounded by a heavy accretion disk

Pedro V. P. Cunha et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

Article Astronomy & Astrophysics

Quantum corrected black holes: Quasinormal modes, scattering, shadows

R. A. Konoplya

PHYSICS LETTERS B (2020)

Article Physics, Multidisciplinary

Rotating dirty black hole and its shadow

Reggie C. Pantig et al.

CHINESE JOURNAL OF PHYSICS (2020)

Article Physics, Multidisciplinary

Weak deflection angle of a dirty black hole

Reggie C. Pantig et al.

CHINESE JOURNAL OF PHYSICS (2020)

Article Astronomy & Astrophysics

Rotating black holes in 4D Einstein-Gauss-Bonnet gravity and its shadow

Rahul Kumar et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

Article Astronomy & Astrophysics

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

A. Belhaj et al.

CLASSICAL AND QUANTUM GRAVITY (2020)

Article Astronomy & Astrophysics

Testing generalized Einstein-Cartan-Kibble-Sciama gravity using weak deflection angle and shadow cast

Ali Ovgun et al.

CLASSICAL AND QUANTUM GRAVITY (2020)

Article Physics, Particles & Fields

Gravitational deflection of massive particles in Schwarzschild-de Sitter spacetime

Guansheng He et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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)

Article Astronomy & Astrophysics

New models with independent dynamical torsion and nonmetricity fields

Sebastian Bahamonde et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

Article Astronomy & Astrophysics

Black holes with scalar hair in light of the Event Horizon Telescope

Mohsen Khodadi et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

Review Astronomy & Astrophysics

Visible Shapes of Black Holes M87* and SgrA*

Vyacheslav Dokuchaev et al.

UNIVERSE (2020)

Article Astronomy & Astrophysics

Black holes in the long-range limit of torsion bigravity

Vasilisa Nikiforova

PHYSICAL REVIEW D (2020)

Article Physics, Particles & Fields

Quasinormal modes, stability and shadows of a black hole in the 4D Einstein-Gauss-Bonnet gravity

R. A. Konoplya et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Article Astronomy & Astrophysics

Generalized Birkhoff theorem in the Poincare gauge gravity theory

Yuri N. Obukhov

PHYSICAL REVIEW D (2020)

Article Astronomy & Astrophysics

Slowly rotating black holes in Einsteinian cubic gravity

Connor Adair et al.

PHYSICAL REVIEW D (2020)

Article Astronomy & Astrophysics

Effect of nonlinear electrodynamics on the weak field deflection angle by a black hole

Wajiha Javed et al.

PHYSICAL REVIEW D (2020)

Article Astronomy & Astrophysics

Black Hole Parameter Estimation from Its Shadow

Rahul Kumar et al.

ASTROPHYSICAL JOURNAL (2020)

Article Astronomy & Astrophysics

Shadows of spherically symmetric black holes and naked singularities

Rajibul Shaikh et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Physics, Particles & Fields

Greybody factor for black string in dRGT massive gravity

P. Boonserm et al.

EUROPEAN PHYSICAL JOURNAL C (2019)

Article Astronomy & Astrophysics

Shadow of a black hole surrounded by dark matter

R. A. Konoplya

PHYSICS LETTERS B (2019)

Article Physics, Particles & Fields

Analytical quasinormal modes of spherically symmetric black holes in the eikonal regime

M. S. Churilova

EUROPEAN PHYSICAL JOURNAL C (2019)

Article Physics, Particles & Fields

Deflection angle of photon from magnetized black hole and effect of nonlinear electrodynamics

Wajiha Javed et al.

EUROPEAN PHYSICAL JOURNAL C (2019)

Article Astronomy & Astrophysics

Curvature radius and Kerr black hole shadow

Shao-Wen Wei et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2019)

Article Physics, Particles & Fields

Black hole shadow with a cosmological constant for cosmological observers

Javad T. Firouzjaee et al.

EUROPEAN PHYSICAL JOURNAL C (2019)

Article Astronomy & Astrophysics

EHT Constraint on the Ultralight Scalar Hair of the M87 Supermassive Black Hole

Pedro V. P. Cunha et al.

UNIVERSE (2019)

Review Astronomy & Astrophysics

The Effects of Finite Distance on the Gravitational Deflection Angle of Light

Toshiaki Ono et al.

UNIVERSE (2019)

Article Physics, Multidisciplinary

Weak gravitational lensing by Kerr-MOG black hole and Gauss-Bonnet theorem

Ali Ovgun et al.

ANNALS OF PHYSICS (2019)

Article Physics, Multidisciplinary

BLACK HOLE TORSION EFFECT AND ITS RELATION TO INFORMATION

I Gkigkitzis et al.

UKRAINIAN JOURNAL OF PHYSICS (2019)

Article Astronomy & Astrophysics

Eikonal quasinormal modes of black holes beyond general relativity

Kostas Glampedakis et al.

PHYSICAL REVIEW D (2019)

Article Astronomy & Astrophysics

Effect of the Brane-Dicke coupling parameter on weak gravitational lensing

Wajiha Javed et al.

PHYSICAL REVIEW D (2019)

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)

Article Astronomy & Astrophysics

Hunting for extra dimensions in the shadow of M87

Sunny Vagnozzi et al.

PHYSICAL REVIEW D (2019)

Article Astronomy & Astrophysics

Black hole shadow in a general rotating spacetime obtained through Newman-Janis algorithm

Rajibul Shaikh

PHYSICAL REVIEW D (2019)

Review Astronomy & Astrophysics

Shadows and strong gravitational lensing: a brief review

Pedro V. P. Cunha et al.

GENERAL RELATIVITY AND GRAVITATION (2018)

Article Astronomy & Astrophysics

Extended Reissner-Nordstrom solutions sourced by dynamical torsion

Jose A. R. Cembranos et al.

PHYSICS LETTERS B (2018)

Article Astronomy & Astrophysics

On the charge of the Galactic centre black hole

Michal Zajacek et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Article Astronomy & Astrophysics

Shadow cast and deflection angle of Kerr-Newman-Kasuya spacetime

Ali Ovgun et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2018)

Article Astronomy & Astrophysics

Black hole shadow in an expanding universe with a cosmological constant

Volker Perlick et al.

PHYSICAL REVIEW D (2018)

Article Astronomy & Astrophysics

Shadow of a black hole at cosmological distances

Gennady S. Bisnovatyi-Kogan et al.

PHYSICAL REVIEW D (2018)

Article Astronomy & Astrophysics

Light deflection by Damour-Solodukhin wormholes and Gauss-Bonnet theorem

Ali Ovgun

PHYSICAL REVIEW D (2018)

Article Astronomy & Astrophysics

New torsion block hole solurions in poincare gauge theory

Jose A. R. Cembranos et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2017)

Article Astronomy & Astrophysics

Shadows of Einstein-dilaton-Gauss-Bonnet black holes

Pedro V. P. Cunha et al.

PHYSICS LETTERS B (2017)

Article Astronomy & Astrophysics

Are eikonal quasinormal modes linked to the unstable circular null geodesics?

R. A. Konoplya et al.

PHYSICS LETTERS B (2017)

Article Astronomy & Astrophysics

Finite-distance corrections to the gravitational bending angle of light in the strong deflection limit

Asahi Ishihara et al.

PHYSICAL REVIEW D (2017)

Article Physics, Multidisciplinary

Observation of Gravitational Waves from a Binary Black Hole Merger

B. P. Abbott et al.

PHYSICAL REVIEW LETTERS (2016)

Article Astronomy & Astrophysics

Astrophysical imaging of Kerr black holes with scalar hair

F. H. Vincent et al.

PHYSICAL REVIEW D (2016)

Article Astronomy & Astrophysics

Gravitational bending angle of light for finite distance and the Gauss-Bonnet theorem

Asahi Ishihara et al.

PHYSICAL REVIEW D (2016)

Article Astronomy & Astrophysics

A coordinate-independent characterization of a black hole shadow

A. A. Abdujabbarov et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

Distorted local shadows

Shohreh Abdolrahimi et al.

PHYSICAL REVIEW D (2015)

Article Astronomy & Astrophysics

Influence of a plasma on the shadow of a spherically symmetric black hole

Volker Perlick et al.

PHYSICAL REVIEW D (2015)

Article Astronomy & Astrophysics

Regge-Wheeler equation, linear stability, and greybody factors for dirty black holes

Petarpa Boonserm et al.

PHYSICAL REVIEW D (2013)

Article Astronomy & Astrophysics

Shadow of rotating non-Kerr black hole

Farruh Atamurotov et al.

PHYSICAL REVIEW D (2013)

Article Astronomy & Astrophysics

Gravitational lensing in the Kerr-Randers optical geometry

M. C. Werner

GENERAL RELATIVITY AND GRAVITATION (2012)

Article Astronomy & Astrophysics

Universality of high-energy absorption cross sections for black holes

Yves Decanini et al.

PHYSICAL REVIEW D (2011)

Article Physics, Multidisciplinary

Quasinormal modes of black holes: From astrophysics to string theory

R. A. Konoplya et al.

REVIEWS OF MODERN PHYSICS (2011)

Review Astronomy & Astrophysics

Quasinormal modes of black holes and black branes

Emanuele Berti et al.

CLASSICAL AND QUANTUM GRAVITY (2009)

Article Astronomy & Astrophysics

Geodesic stability, Lyapunov exponents, and quasinormal modes

Vitor Cardoso et al.

PHYSICAL REVIEW D (2009)

Article Astronomy & Astrophysics

Bounding the greybody factors for Schwarzschild black holes

Petarpa Boonserm et al.

PHYSICAL REVIEW D (2008)

Article Astronomy & Astrophysics

Exact gravitational lens equation in spherically symmetric and static spacetimes

V Perlick

PHYSICAL REVIEW D (2004)

Article Astronomy & Astrophysics

Reissner-Nordstrom metric in the Friedman-Robertson-Walker universe

CJ Gao et al.

PHYSICS LETTERS B (2004)

Article Physics, Multidisciplinary

A master equation for gravitational perturbations of maximally symmetric black holes in higher dimensions

H Kodama et al.

PROGRESS OF THEORETICAL PHYSICS (2003)

Article Astronomy & Astrophysics

Gravitational lensing in the strong field limit

V Bozza

PHYSICAL REVIEW D (2002)

Article Astronomy & Astrophysics

Gravitational lensing in spherically symmetric static spacetimes with centrifugal force reversal

W Hasse et al.

GENERAL RELATIVITY AND GRAVITATION (2002)

Article Astronomy & Astrophysics

Schwarzschild black hole lensing

KS Virbhadra et al.

PHYSICAL REVIEW D (2000)

Article Astronomy & Astrophysics

Viewing the shadow of the black hole at the Galactic center

H Falcke et al.

ASTROPHYSICAL JOURNAL (2000)