Results 31 to 40 of about 171,489 (202)
Baryons, neutrinos, feedback and weak gravitational lensing [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 (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.
Massimo Viola +4 more
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Weak Gravitational Lensing Bispectrum
The Astrophysical Journal, 2001 Weak gravitational lensing observations probe the spectrum and evolution of density fluctuations and the cosmological parameters which govern them. The non-linear evolution of large scale structure produces a non-Gaussian signal which is potentially observable in galaxy shear data.
Wayne Hu, Wayne Hu, Asantha Cooray
openaire +3 more sources
Beyond adaptive preferences: Rethinking women's complicity in their own subordination
European Journal of Philosophy, Volume 30, Issue 4, Page 1317-1334, December 2022., 2022 Abstract An important question confronting feminist philosophers is why women are sometimes complicit in their own subordination. The dominant view holds that complicity is best understood in terms of adaptive preferences. This view assumes that agents will naturally gravitate away from subordination and towards flourishing as long as they do not have ...
Charlotte Knowles
wiley +1 more source
Why weak lensing cluster shapes are insensitive to self-interacting dark matter [PDF]
, 2022 We investigate whether the shapes of galaxy clusters inferred from weak gravitational lensing can be used as a test of the nature of dark matter. We analyse mock weak lensing data, with gravitational lenses extracted from cosmological simulations run with two different dark matter models (CDM and SIDM).
arxiv +1 more source
Optimizing tomography for weak gravitational lensing surveys [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The subject of this paper is optimization of weak lensing tomography: we carry out numerical minimization of a measure of total statistical error as a function of the redshifts of the tomographic bin edges by means of a Nelder–Mead algorithm in order to optimize the sensitivity of weak lensing with respect to different ...
Björn Malte Schäfer +3 more
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Simulating weak lensing by large scale structure [PDF]
Astrophys.J.592:699-709,2003, 2003 We model weak gravitational lensing of light by large-scale structure using ray tracing through N-body simulations. The method is described with particular attention paid to numerical convergence. We investigate some of the key approximations in the multi-plane ray tracing algorithm. Our simulated shear and convergence maps are used to explore how well
arxiv +1 more source
Weak gravitational lensing by stringy black holes [PDF]
The European Physical Journal Plus, 2019 In this paper, we discuss the weak gravitational lensing in the context of stringy black holes. Initially, we examine the deflection angle of photon by charged stringy black hole. For this desire, we compute the Gaussian optical curvature and implement the Gauss-Bonnet theorem to investigate the deflection angle for spherically balanced spacetime of ...
Ali Övgün +4 more
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Thinking about Progress: From Science to Philosophy
Noûs, Volume 56, Issue 4, Page 814-840, December 2022., 2022 Abstract Is there progress in philosophy? If so, how much? Philosophers have recently argued for a wide range of answers to these questions, from the view that there is no progress whatsoever to the view that philosophy has provided answers to all the big philosophical questions.
Finnur Dellsén +2 more
wiley +1 more source
Resource Letter: Gravitational Lensing [PDF]
, 2012 This Resource Letter provides a guide to a selection of the literature on gravitational lensing and its applications. Journal articles, books, popular articles, and websites are cited for the following topics: foundations of gravitational lensing, foundations of cosmology, history of gravitational lensing, strong lensing, weak lensing, and microlensing.
arxiv +1 more source
Current status of weak gravitational lensing
New Astronomy Reviews, 2002 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 +3 more
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