Results 21 to 30 of about 402 (203)
Strong gravitational lensing by Sgr A* [PDF]
Classical and Quantum Gravity, 2011 In recent years, there has been increasing recognition of the potential of the galactic center as a probe of general relativity in the strong field. There is almost certainly a black hole at Sgr A* in the galactic center, and this would allow us the opportunity to probe dynamics near the exterior of the black hole.
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Image Simulations for Strong and Weak Gravitational Lensing [PDF]
Symmetry, 2020 Gravitational lensing has been identified as a powerful tool to address fundamental problems in astrophysics at different scales, ranging from exoplanet identification to dark energy and dark matter characterization in cosmology. Image simulations have played a fundamental role in the realization of the full potential of gravitational lensing by ...
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Strong Gravitational Lensing and Galactic Bulges [PDF]
The Astrophysical Journal, 2003 13 pages, 2 figures, the shortened version was accepted by ApJ(Letters)
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Strong gravitational lensing of explosive transients [PDF]
Reports on Progress in Physics, 2019 Abstract Recent rapid progress in time domain surveys makes it possible to detect various types of explosive transients in the Universe in large numbers, some of which will be gravitationally lensed into multiple images. Although a large number of strongly lensed distant galaxies and quasars have already been discovered, strong ...
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Strong gravitational lensing by Kiselev black hole [PDF]
Physical Review D, 2015 We investigate the gravitational lensing scenario due to Schwarzschild-like black hole surrounded by quintessence (Kiselev black hole). We work for the special case of Kiselev black hole where we take the state parameter $w_{q}=-\frac{2}{3}$. For the detailed derivation and analysis of the bending angle involved in the deflection of light, we discuss ...
Younas, A +3 more
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THE EFFECT OF ENVIRONMENT ON SHEAR IN STRONG GRAVITATIONAL LENSES [PDF]
The Astrophysical Journal, 2010 Accepted for publication in The Astrophysical Journal; 28 pages, 9 figures, 5 ...
Wong, Kenneth C. +4 more
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STRONG GRAVITATIONAL LENSING AND ITS COSMIC CONSTRAINTS [PDF]
Modern Physics Letters A, 2013 In this paper, we propose a new method to use the strong lensing data sets to constrain a cosmological model. By taking the ratio [Formula: see text] as cosmic observations, one can completely eliminate the uncertainty caused by the relation σSIS= fEσ0which characterizes the relation between the stellar velocity dispersion σ0and the velocity dispersion
Wang, Nannan, Xu, Lixin
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Strong gravitational lensing with Gauss-Bonnet correction [PDF]
Journal of Cosmology and Astroparticle Physics, 2014 In this paper we investigate the strong gravitational lensing with Gauss-Bonnet gravity. By considering the logarithmic term for deflection angle, we obtain the deflection angle $\hatα$ and corresponding parameters $\bar{a}$ and $\bar{b}$. Finally, by using the relations between the observables and lensing parameters, we estimate the observables such ...
Sadeghi, J., Vaez, H.
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Searching for Strong Gravitational Lenses
Space Science ReviewsAbstractStrong gravitational lenses provide unique laboratories for cosmological and astrophysical investigations, but they must first be discovered – a task that can be met with significant contamination by other astrophysical objects and asterisms.
Cameron Lemon +11 more
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Essentials of Strong Gravitational Lensing
Space Science ReviewsAbstractOf order one in $10^{3}$ 10 3 quasars and high-redshift galaxies appears in the sky as multiple images as a result of gravitational lensing by unrelated galaxies ...
Saha, Prasenjit +3 more
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