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Statistics of Extreme Gravitational Lensing Events. I. The Zero Shear Case [PDF]
The Astrophysical Journal, 1996 For a given source and lens pair, there is a thin on-axis tube-like volume behind the lens in which the radiation flux from the source is greatly increased due to gravitational lensing. Any objects (such as dust grains) which pass through such a thin tube will experience strong bursts of radiation, i.e., Extreme Gravitational Lensing Events (EGLE).
Wang, Yun, Turner, Edwin L.
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Statistics of Extreme Gravitational Lensing Events. II. The Finite Shear Case [PDF]
The Astrophysical Journal, 1997 17 pages including 3 figures, using AAS LATEX macros v4.0.
Wang, Yun, Turner, Edwin L.
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Weak gravitational lensing in different cosmologies, using an algorithm for shear in three dimensions [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 25 pages, LaTeX, 30 ...
Andrew J. Barber +3 more
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Gravitational Lensing and Optical Geometry [PDF]
, 2020 The year 2019 saw the centenary of Eddington's eclipse expeditions and the corroboration of Einstein's general relativity by gravitational lensing. To mark the occasion, a Special Issue of Universe has been dedicated to the theoretical aspects of strong ...
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The intrinsic B-mode polarisation of the cosmic microwave background [PDF]
, 2014 . We estimate the B-polarisation induced in the Cosmic Microwave Background by the non-linear evolution of density perturbations. Using the second-order Boltzmann code SONG, our analysis incorporates, for the first time, all physical effects at ...
Guido Pettinari (16190237) +16 more
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Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT We investigate the performance of the metacalibration shear calibration framework using simulated imaging data for the Nancy Grace Roman Space Telescope (Roman) reference High-Latitude Imaging Survey (HLIS). The weak lensing programme of Roman requires the mean weak lensing shear estimate to be calibrated within about 0.03 per ...
Masaya Yamamoto +7 more
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The Astrophysical Journal, 2022 Abstract We study the gravitational lensing influence of a massive object in a dark matter halo, using a simple model of a point mass embedded in a spherical Navarro–Frenk–White halo. Building on the analysis of critical curves and caustics presented in the first part of this work, we proceed to explore the geometry of images formed by ...
Michal Karamazov, David Heyrovský
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Means of confusion: how pixel noise affects shear estimates for weak gravitational lensing [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 integrated the origin of the moment correlation (thanks to Alan Heavens).
Melchior, P., Viola, M.
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Gravitational lensing shear by an exotic lens object with negative convergence or negative mass [PDF]
Physical Review D, 2013 Gravitational lens models with negative convergence(surface mass density projected onto the lens plane) inspired by modified gravity theories, exotic matter and energy have been recently discussed in such a way that a static and spherically-symmetric modified spacetime metric depends on the inverse distance to the power of positive $n$(n=1 for ...
Izumi, Koji +4 more
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The imprint of f(R) gravity on weak gravitational lensing – II. Information content in cosmic shear statistics [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We investigate the information content of various cosmic shear statistics on the theory of gravity. Focusing on the Hu-Sawicki-type $f(R)$ model, we perform a set of ray-tracing simulations and measure the convergence bispectrum, peak counts and Minkowski functionals.
Shirasaki, Masato +3 more
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