Strong gravitational lensing across a dilaton anti-de Sitter black hole

Journal Article · Mon Feb 15 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.044013· OSTI ID:21409301

Ghosh, Tanwi; SenGupta, Soumitra ^[1]

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1. Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032 (India)

In this work we investigate the gravitational lensing effect in the strong field region around dilaton black holes in an anti-de Sitter space. We also analyze the dependence of the radius of the photon sphere and deflection angle on dilaton coupling and the cosmological constant in this black hole spacetime. Finally the values of minimum impact parameter, the separation between the first and the other images, as well as the ratio between the flux of the first image and the flux coming from all the other images are determined to characterize some possible distinct signatures of such black holes.

• OSTI ID: 21409301
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 4; Other Information: DOI: 10.1103/PhysRevD.81.044013; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANTI DE SITTER SPACE
BLACK HOLES
COSMOLOGICAL CONSTANT
COUPLING
GRAVITATIONAL LENSES
IMPACT PARAMETER
PHOTONS
SPACE-TIME
STRONG INTERACTIONS
BASIC INTERACTIONS
BOSONS
ELEMENTARY PARTICLES
INTERACTIONS
LENSES
MASSLESS PARTICLES
MATHEMATICAL SPACE
SPACE