Results 1 to 10 of about 585 (219)
The gravitational bending of acoustic Schwarzschild black hole [PDF]
Acoustic black hole is becoming an attractive topic in recent years, for it open-up new direction for experimental/observational explorations of black holes.
Chen-Kai Qiao, Mi Zhou
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Weak gravitational lensing [PDF]
Review; 223 pages; figures embedded; to be submitted to Physics Reports; constructive comments are ...
Matthias Bartelmann, Peter Schneider
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Peaks in weak lensing mass maps for cluster astrophysics and cosmology [PDF]
Clusters of galaxies can be identified from the peaks in weak lensing aperture mass maps constructed from weak lensing shear catalogs. Such purely gravitational cluster selection differs considerably from traditional cluster selection based on the ...
Masamune OGURI, Satoshi MIYAZAKI
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Weak gravitational lensing by voids [PDF]
We consider the prospects for detecting weak gravitational lensing by underdensities (voids) in the large-scale matter distribution. We derive the basic expressions for magnification and distortion by spherical voids. Clustering of the background sources and cosmic variance are the main factors which limit in principle the detection of lensing by voids.
Luca Amendola +2 more
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Weak gravitational lensing of the CMB [PDF]
Weak gravitational lensing has several important effects on the cosmic microwave background (CMB): it changes the CMB power spectra, induces non-Gaussianities, and generates a B-mode polarization signal that is an important source of confusion for the signal from primordial gravitational waves.
Antony Lewis +2 more
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Baryons, neutrinos, feedback and weak gravitational lensing [PDF]
(Abridged) The effect of baryonic feedback on the dark matter mass distribution is generally considered to be a nuisance to weak gravitational lensing. Measurements of cosmological parameters are affected as feedback alters the cosmic shear signal on angular scales smaller than a few arcminutes.
Catherine Heymans +2 more
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Weak Gravitational Lensing and Its Cosmological Applications [PDF]
Weak gravitational lensing is a unique probe of the dark side of the universe: It provides a direct way to map the distribution of dark matter around galaxies and clusters of galaxies as well as on cosmological scales. Furthermore, the measurement of the weak lensing–induced distortions of the shapes of distant galaxies is a potentially powerful probe
Henk Hoekstra, Bhuvnesh Jain
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Current status of weak gravitational lensing
Weak gravitational lensing of distant galaxies by foreground structures has proven to be a powerful tool to study the mass distribution in the universe. Nowadays, attention has shifted from clusters of galaxies to the statistical properties of the large scale structures and the halos of (field) galaxies. These applications have become feasible with the
Henk Hoekstra
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Geometric Outlines of the Gravitational Lensing and Its Astronomic Applications
Gravitational lensing is a topic of great application value in the field of astronomy. The properties and research methods of gravitational lensing are closely related to the geometric and relativistic characteristics of the background universe.
Bin Shen, Mingyang Yu
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Gravitational Lensing of Acoustic Charged Black Holes
We study the gravitational lensing of acoustic charged black holes in strong and weak field limit approximations. For this purpose, we first numerically obtain the deflection limit coefficients and deflection angle in the strong field limit.
Niyaz Uddin Molla, Ujjal Debnath
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