Results 11 to 20 of about 42,790 (257)
Weak Gravitational Lensing [PDF]
Proceedings of Frontiers of Fundamental Physics 14 — PoS(FFP14), 2008 In this brief review I consider the advances made in weak gravitational lensing over the last 8 years, concentrating on the large scales - cosmic shear. I outline the theoretical developments, observational status, and the challenges which cosmic shear must overcome to realise its full potential. Finally I consider the prospects for probing Dark Energy
Heavens, A, A. Heavens
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Weak Gravitational Lensing of Finite Beams [PDF]
Physical Review Letters, 2017 The standard theory of weak gravitational lensing relies on the infinitesimal light beam approximation. In this context, images are distorted by convergence and shear, the respective sources of which unphysically depend on the resolution of the distribution of matter---the so-called Ricci-Weyl problem.
Fleury, Pierre +2 more
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Weak gravitational lensing around dyonic ModMax black hole in plasma
Communications in Theoretical PhysicsIn this study, we examine the effects of weak gravitational lensing and determine the shadow radius around black holes within the Dyonic ModMax (DM) spacetime, also accounting for models with nonuniform plasma distributions.
Z. Turakhonov +4 more
semanticscholar +2 more sources
Instrumental systematics and weak gravitational lensing [PDF]
Journal of Instrumentation, 2015 We present a pedagogical review of the weak gravitational lensing measurement process and its connection to major scientific questions such as dark matter and dark energy. Then we describe common ways of parametrizing systematic errors and understanding how they affect weak lensing measurements.
Rachel Mandelbaum (3892837)
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Weak gravitational lensing cross-correlations
, 2017 The matter content of the Universe is dominated by dark matter. Beyond its abundance and its lack of non-gravitational interactions with standard model matter, little is known about the nature of dark matter. This thesis attempts to illuminate different aspects of dark matter by using gravitational lensing in conjunction with other cosmological probes.
Tröster, Tilman
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Weak gravitational lensing and shadow cast by rotating black holes in axionic Chern–Simons theory [PDF]
Physics of the Dark Universe, 2023 We investigate the impact of the axionic coupling parameter on the bending angle of light and the shadow cast by slowly rotating black holes in Chern-Simons modified gravity.
N. Parbin +2 more
semanticscholar +1 more source
Shadow and weak gravitational lensing of a rotating regular black hole in a non-minimally coupled Einstein-Yang-Mills theory in the presence of plasma [PDF]
The European Physical Journal Plus, 2022 The null geodesics of the regular and rotating magnetically charged black hole in a non-minimally coupled Einstein-Yang-Mills theory surrounded by a plasma medium is studied.
Shubham Kala, H. Nandan, P. Sharma
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Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud background with quintessential field [PDF]
Chinese Physics C, High Energy Physics & Nuclear Physics, 2022 In this study, we observe that, in the presence of the string cloud parameter a and the quintessence parameter γ, with the equation of state parameter , the radius of the shadow of the Schwarzschild black hole increases as compared with that in the pure ...
G. Mustafa +4 more
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Weak gravitational lensing in dark matter and plasma mediums for wormhole-like static aether solution [PDF]
The European Physical Journal C, 2022 In this paper, we study the deflection angle for wormhole-like static aether solution by using Gibbons and Werner technique in non-plasma, plasma, and dark matter mediums.
W. Javed +3 more
semanticscholar +1 more source
Gravitational Lensing: Strong, Weak and Micro [PDF]
, 2006 The theory, observations, and applications of gravitational lensing constitute one of the most rapidly growing branches of astrophysics. The gravitational deflection of light generated by mass concentrations along a light path produces magnification ...
Peter Schneider +2 more
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